contestId int64 0 1.01k | index stringclasses 55
values | name stringlengths 2 58 | type stringclasses 2
values | rating int64 0 3.5k | tags listlengths 0 7 | title stringclasses 495
values | time-limit stringclasses 8
values | memory-limit stringclasses 8
values | problem-description stringlengths 0 7.15k | input-specification stringlengths 0 2.05k | output-specification stringlengths 0 1.5k | demo-input listlengths 0 7 | demo-output listlengths 0 7 | note stringlengths 0 5.24k | points float64 0 425k | test_cases listlengths 0 402 | creationTimeSeconds int64 1.37B 1.7B | relativeTimeSeconds int64 8 2.15B | programmingLanguage stringclasses 3
values | verdict stringclasses 14
values | testset stringclasses 12
values | passedTestCount int64 0 1k | timeConsumedMillis int64 0 15k | memoryConsumedBytes int64 0 805M | code stringlengths 5 65.5k | instruction_seed stringlengths 262 8.2k | response stringlengths 19 65.5k | score float64 -1 3.99 | _source stringclasses 1
value |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
676 | C | Vasya and String | PROGRAMMING | 1,500 | [
"binary search",
"dp",
"strings",
"two pointers"
] | null | null | High school student Vasya got a string of length *n* as a birthday present. This string consists of letters 'a' and 'b' only. Vasya denotes beauty of the string as the maximum length of a substring (consecutive subsequence) consisting of equal letters.
Vasya can change no more than *k* characters of the original strin... | The first line of the input contains two integers *n* and *k* (1<=≤<=*n*<=≤<=100<=000,<=0<=≤<=*k*<=≤<=*n*) — the length of the string and the maximum number of characters to change.
The second line contains the string, consisting of letters 'a' and 'b' only. | Print the only integer — the maximum beauty of the string Vasya can achieve by changing no more than *k* characters. | [
"4 2\nabba\n",
"8 1\naabaabaa\n"
] | [
"4\n",
"5\n"
] | In the first sample, Vasya can obtain both strings "aaaa" and "bbbb".
In the second sample, the optimal answer is obtained with the string "aaaaabaa" or with the string "aabaaaaa". | 1,500 | [
{
"input": "4 2\nabba",
"output": "4"
},
{
"input": "8 1\naabaabaa",
"output": "5"
},
{
"input": "1 0\na",
"output": "1"
},
{
"input": "1 1\nb",
"output": "1"
},
{
"input": "1 0\nb",
"output": "1"
},
{
"input": "1 1\na",
"output": "1"
},
{
... | 1,675,519,462 | 2,147,483,647 | Python 3 | OK | TESTS | 117 | 156 | 4,812,800 | n,k=input().split(" ")
s=input()
n=int(n)
k=int(k)
def find(x):
j=c=ans=0
for i in range(n):
if s[i]==x:
c+=1
while c>k:
if s[j]==x:
c-=1
j+=1
ans=max(ans,i-j+1)
return ans
print(max(find("a"),find("b"))) | Title: Vasya and String
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
High school student Vasya got a string of length *n* as a birthday present. This string consists of letters 'a' and 'b' only. Vasya denotes beauty of the string as the maximum length of a substring (consecutive subsequ... | ```python
n,k=input().split(" ")
s=input()
n=int(n)
k=int(k)
def find(x):
j=c=ans=0
for i in range(n):
if s[i]==x:
c+=1
while c>k:
if s[j]==x:
c-=1
j+=1
ans=max(ans,i-j+1)
return ans
print(max(find("a"),find("b")))
``... | 3 | MatrixStudio/Codeforces-Python-Submissions | |
734 | A | Anton and Danik | PROGRAMMING | 800 | [
"implementation",
"strings"
] | null | null | Anton likes to play chess, and so does his friend Danik.
Once they have played *n* games in a row. For each game it's known who was the winner — Anton or Danik. None of the games ended with a tie.
Now Anton wonders, who won more games, he or Danik? Help him determine this. | The first line of the input contains a single integer *n* (1<=≤<=*n*<=≤<=100<=000) — the number of games played.
The second line contains a string *s*, consisting of *n* uppercase English letters 'A' and 'D' — the outcome of each of the games. The *i*-th character of the string is equal to 'A' if the Anton won the *i*... | If Anton won more games than Danik, print "Anton" (without quotes) in the only line of the output.
If Danik won more games than Anton, print "Danik" (without quotes) in the only line of the output.
If Anton and Danik won the same number of games, print "Friendship" (without quotes). | [
"6\nADAAAA\n",
"7\nDDDAADA\n",
"6\nDADADA\n"
] | [
"Anton\n",
"Danik\n",
"Friendship\n"
] | In the first sample, Anton won 6 games, while Danik — only 1. Hence, the answer is "Anton".
In the second sample, Anton won 3 games and Danik won 4 games, so the answer is "Danik".
In the third sample, both Anton and Danik won 3 games and the answer is "Friendship". | 500 | [
{
"input": "6\nADAAAA",
"output": "Anton"
},
{
"input": "7\nDDDAADA",
"output": "Danik"
},
{
"input": "6\nDADADA",
"output": "Friendship"
},
{
"input": "10\nDDDDADDADD",
"output": "Danik"
},
{
"input": "40\nAAAAAAAAADDAAAAAAAAAAADADDAAAAAAAAAAADAA",
"output": ... | 1,695,409,484 | 2,147,483,647 | Python 3 | OK | TESTS | 25 | 62 | 102,400 | n = input()
s = str(input())
cnt1 = 0
cnt2 = 0
for i in range(len(s)):
if(s[i] == 'D'):
cnt1+=1
elif(s[i] == 'A'):
cnt2+=1
if(cnt1>cnt2):
print("Danik")
elif(cnt2>cnt1):
print("Anton")
else:
print("Friendship") | Title: Anton and Danik
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Anton likes to play chess, and so does his friend Danik.
Once they have played *n* games in a row. For each game it's known who was the winner — Anton or Danik. None of the games ended with a tie.
Now Anton wonders, w... | ```python
n = input()
s = str(input())
cnt1 = 0
cnt2 = 0
for i in range(len(s)):
if(s[i] == 'D'):
cnt1+=1
elif(s[i] == 'A'):
cnt2+=1
if(cnt1>cnt2):
print("Danik")
elif(cnt2>cnt1):
print("Anton")
else:
print("Friendship")
``` | 3 | MatrixStudio/Codeforces-Python-Submissions | |
689 | C | Mike and Chocolate Thieves | PROGRAMMING | 1,700 | [
"binary search",
"combinatorics",
"math"
] | null | null | Bad news came to Mike's village, some thieves stole a bunch of chocolates from the local factory! Horrible!
Aside from loving sweet things, thieves from this area are known to be very greedy. So after a thief takes his number of chocolates for himself, the next thief will take exactly *k* times more than the previous... | The single line of input contains the integer *m* (1<=≤<=*m*<=≤<=1015) — the number of ways the thieves might steal the chocolates, as rumours say. | Print the only integer *n* — the maximum amount of chocolates that thieves' bags can carry. If there are more than one *n* satisfying the rumors, print the smallest one.
If there is no such *n* for a false-rumoured *m*, print <=-<=1. | [
"1\n",
"8\n",
"10\n"
] | [
"8\n",
"54\n",
"-1\n"
] | In the first sample case the smallest *n* that leads to exactly one way of stealing chocolates is *n* = 8, whereas the amounts of stealed chocolates are (1, 2, 4, 8) (the number of chocolates stolen by each of the thieves).
In the second sample case the smallest *n* that leads to exactly 8 ways is *n* = 54 with the po... | 1,500 | [
{
"input": "1",
"output": "8"
},
{
"input": "8",
"output": "54"
},
{
"input": "10",
"output": "-1"
},
{
"input": "27",
"output": "152"
},
{
"input": "28206",
"output": "139840"
},
{
"input": "32",
"output": "184"
},
{
"input": "115",
"o... | 1,467,826,879 | 3,979 | Python 3 | TIME_LIMIT_EXCEEDED | PRETESTS | 11 | 2,000 | 0 | def f(n):
cnt = 0
for k in range(2, int(n ** 0.34) + 1):
p = k ** 3
cnt += n // p
return cnt
m = int(input())
left = 0
right = 5000000000000000
done = False
while right - left > 1:
mid = (right + left) // 2
v = f(mid)
if v < m:
left = mid
else:
right = mid
i... | Title: Mike and Chocolate Thieves
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Bad news came to Mike's village, some thieves stole a bunch of chocolates from the local factory! Horrible!
Aside from loving sweet things, thieves from this area are known to be very greedy. So after a thi... | ```python
def f(n):
cnt = 0
for k in range(2, int(n ** 0.34) + 1):
p = k ** 3
cnt += n // p
return cnt
m = int(input())
left = 0
right = 5000000000000000
done = False
while right - left > 1:
mid = (right + left) // 2
v = f(mid)
if v < m:
left = mid
else:
rig... | 0 | MatrixStudio/Codeforces-Python-Submissions | |
703 | A | Mishka and Game | PROGRAMMING | 800 | [
"implementation"
] | null | null | Mishka is a little polar bear. As known, little bears loves spending their free time playing dice for chocolates. Once in a wonderful sunny morning, walking around blocks of ice, Mishka met her friend Chris, and they started playing the game.
Rules of the game are very simple: at first number of rounds *n* is defined.... | The first line of the input contains single integer *n* *n* (1<=≤<=*n*<=≤<=100) — the number of game rounds.
The next *n* lines contains rounds description. *i*-th of them contains pair of integers *m**i* and *c**i* (1<=≤<=*m**i*,<=<=*c**i*<=≤<=6) — values on dice upper face after Mishka's and Chris' throws in *i*-th ... | If Mishka is the winner of the game, print "Mishka" (without quotes) in the only line.
If Chris is the winner of the game, print "Chris" (without quotes) in the only line.
If the result of the game is draw, print "Friendship is magic!^^" (without quotes) in the only line. | [
"3\n3 5\n2 1\n4 2\n",
"2\n6 1\n1 6\n",
"3\n1 5\n3 3\n2 2\n"
] | [
"Mishka",
"Friendship is magic!^^",
"Chris"
] | In the first sample case Mishka loses the first round, but wins second and third rounds and thus she is the winner of the game.
In the second sample case Mishka wins the first round, Chris wins the second round, and the game ends with draw with score 1:1.
In the third sample case Chris wins the first round, but there... | 500 | [
{
"input": "3\n3 5\n2 1\n4 2",
"output": "Mishka"
},
{
"input": "2\n6 1\n1 6",
"output": "Friendship is magic!^^"
},
{
"input": "3\n1 5\n3 3\n2 2",
"output": "Chris"
},
{
"input": "6\n4 1\n4 2\n5 3\n5 1\n5 3\n4 1",
"output": "Mishka"
},
{
"input": "8\n2 4\n1 4\n1 ... | 1,680,854,965 | 2,147,483,647 | Python 3 | OK | TESTS | 69 | 46 | 0 | n = int(input())
a = 0
b = 0
for i in range(n):
c,d = list(map(int,input().split()))
if c > d:
a += 1
elif c < d:
b += 1
else:
a += 1
b += 1
if a > b:
print("Mishka")
elif a == b:
print("Friendship is magic!^^")
else:
print("Chris") | Title: Mishka and Game
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Mishka is a little polar bear. As known, little bears loves spending their free time playing dice for chocolates. Once in a wonderful sunny morning, walking around blocks of ice, Mishka met her friend Chris, and they st... | ```python
n = int(input())
a = 0
b = 0
for i in range(n):
c,d = list(map(int,input().split()))
if c > d:
a += 1
elif c < d:
b += 1
else:
a += 1
b += 1
if a > b:
print("Mishka")
elif a == b:
print("Friendship is magic!^^")
else:
print("Chris")
... | 3 | MatrixStudio/Codeforces-Python-Submissions | |
18 | D | Seller Bob | PROGRAMMING | 2,000 | [
"brute force",
"dp",
"greedy"
] | D. Seller Bob | 2 | 128 | Last year Bob earned by selling memory sticks. During each of *n* days of his work one of the two following events took place:
- A customer came to Bob and asked to sell him a 2*x* MB memory stick. If Bob had such a stick, he sold it and got 2*x* berllars. - Bob won some programming competition and got a 2*x* MB me... | The first input line contains number *n* (1<=≤<=*n*<=≤<=5000) — amount of Bob's working days. The following *n* lines contain the description of the days. Line sell x stands for a day when a customer came to Bob to buy a 2*x* MB memory stick (0<=≤<=*x*<=≤<=2000). It's guaranteed that for each *x* there is not more than... | Output the maximum possible earnings for Bob in berllars, that he would have had if he had known all the events beforehand. Don't forget, please, that Bob can't keep more than one memory stick at a time. | [
"7\nwin 10\nwin 5\nwin 3\nsell 5\nsell 3\nwin 10\nsell 10\n",
"3\nwin 5\nsell 6\nsell 4\n"
] | [
"1056\n",
"0\n"
] | none | 0 | [
{
"input": "7\nwin 10\nwin 5\nwin 3\nsell 5\nsell 3\nwin 10\nsell 10",
"output": "1056"
},
{
"input": "3\nwin 5\nsell 6\nsell 4",
"output": "0"
},
{
"input": "60\nwin 30\nsell 30\nwin 29\nsell 29\nwin 28\nsell 28\nwin 27\nsell 27\nwin 26\nsell 26\nwin 25\nsell 25\nwin 24\nsell 24\nwin 23... | 1,553,175,380 | 2,147,483,647 | PyPy 3 | TIME_LIMIT_EXCEEDED | TESTS | 23 | 2,000 | 71,168,000 | n=int(input())
t=[0]*(n+1)
w=[0]*(n+1)
v=[0]*(2002)
for i in range(2002):
v[i]=[0]*(n+1)
for i in range(1,n+1):
t[i],w[i]=input().split()
w[i]=int(w[i])
if t[i][0]=='w':
v[ w[i] ][ i ]=1
for i in range(1,n+1):
for j in range(2001):
v[j][i]+=v[j][i-1]
dp=[2]*(n+2)
dp[0]=[0]*(n+2)
dp[1]=[0]*(n+2)
cur=1;
for i in... | Title: Seller Bob
Time Limit: 2 seconds
Memory Limit: 128 megabytes
Problem Description:
Last year Bob earned by selling memory sticks. During each of *n* days of his work one of the two following events took place:
- A customer came to Bob and asked to sell him a 2*x* MB memory stick. If Bob had such a stick, he... | ```python
n=int(input())
t=[0]*(n+1)
w=[0]*(n+1)
v=[0]*(2002)
for i in range(2002):
v[i]=[0]*(n+1)
for i in range(1,n+1):
t[i],w[i]=input().split()
w[i]=int(w[i])
if t[i][0]=='w':
v[ w[i] ][ i ]=1
for i in range(1,n+1):
for j in range(2001):
v[j][i]+=v[j][i-1]
dp=[2]*(n+2)
dp[0]=[0]*(n+2)
dp[1]=[0]*(n+2)
cur=1... | 0 | MatrixStudio/Codeforces-Python-Submissions |
161 | D | Distance in Tree | PROGRAMMING | 1,800 | [
"dfs and similar",
"dp",
"trees"
] | null | null | A tree is a connected graph that doesn't contain any cycles.
The distance between two vertices of a tree is the length (in edges) of the shortest path between these vertices.
You are given a tree with *n* vertices and a positive number *k*. Find the number of distinct pairs of the vertices which have a distance of ex... | The first line contains two integers *n* and *k* (1<=≤<=*n*<=≤<=50000, 1<=≤<=*k*<=≤<=500) — the number of vertices and the required distance between the vertices.
Next *n*<=-<=1 lines describe the edges as "*a**i* *b**i*" (without the quotes) (1<=≤<=*a**i*,<=*b**i*<=≤<=*n*, *a**i*<=≠<=*b**i*), where *a**i* and *b**i* ... | Print a single integer — the number of distinct pairs of the tree's vertices which have a distance of exactly *k* between them.
Please do not use the %lld specifier to read or write 64-bit integers in С++. It is preferred to use the cin, cout streams or the %I64d specifier. | [
"5 2\n1 2\n2 3\n3 4\n2 5\n",
"5 3\n1 2\n2 3\n3 4\n4 5\n"
] | [
"4\n",
"2\n"
] | In the first sample the pairs of vertexes at distance 2 from each other are (1, 3), (1, 5), (3, 5) and (2, 4). | 2,000 | [
{
"input": "5 2\n1 2\n2 3\n3 4\n2 5",
"output": "4"
},
{
"input": "5 3\n1 2\n2 3\n3 4\n4 5",
"output": "2"
},
{
"input": "10 1\n2 1\n3 1\n4 3\n5 4\n6 5\n7 1\n8 6\n9 2\n10 6",
"output": "9"
},
{
"input": "10 2\n2 1\n3 1\n4 3\n5 4\n6 5\n7 1\n8 6\n9 2\n10 6",
"output": "10"
... | 1,688,562,263 | 2,147,483,647 | Python 3 | WRONG_ANSWER | TESTS | 0 | 62 | 0 | def dfs(u, p, d, k, cnt):
for v in tree[u]:
if v != p:
if d[v] == k:
cnt[0] += 1
elif d[v] < k:
dfs(v, u, d, k - 1, cnt)
n, k = map(int, input().split())
tree = [[] for _ in range(n)]
for i in range(n - 1):
u, v = map(int, input().split... | Title: Distance in Tree
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
A tree is a connected graph that doesn't contain any cycles.
The distance between two vertices of a tree is the length (in edges) of the shortest path between these vertices.
You are given a tree with *n* vertices an... | ```python
def dfs(u, p, d, k, cnt):
for v in tree[u]:
if v != p:
if d[v] == k:
cnt[0] += 1
elif d[v] < k:
dfs(v, u, d, k - 1, cnt)
n, k = map(int, input().split())
tree = [[] for _ in range(n)]
for i in range(n - 1):
u, v = map(int, inp... | 0 | MatrixStudio/Codeforces-Python-Submissions | |
59 | A | Word | PROGRAMMING | 800 | [
"implementation",
"strings"
] | A. Word | 2 | 256 | Vasya is very upset that many people on the Net mix uppercase and lowercase letters in one word. That's why he decided to invent an extension for his favorite browser that would change the letters' register in every word so that it either only consisted of lowercase letters or, vice versa, only of uppercase ones. At th... | The first line contains a word *s* — it consists of uppercase and lowercase Latin letters and possesses the length from 1 to 100. | Print the corrected word *s*. If the given word *s* has strictly more uppercase letters, make the word written in the uppercase register, otherwise - in the lowercase one. | [
"HoUse\n",
"ViP\n",
"maTRIx\n"
] | [
"house\n",
"VIP\n",
"matrix\n"
] | none | 500 | [
{
"input": "HoUse",
"output": "house"
},
{
"input": "ViP",
"output": "VIP"
},
{
"input": "maTRIx",
"output": "matrix"
},
{
"input": "BNHWpnpawg",
"output": "bnhwpnpawg"
},
{
"input": "VTYGP",
"output": "VTYGP"
},
{
"input": "CHNenu",
"output": "chn... | 1,607,010,697 | 2,147,483,647 | Python 3 | OK | TESTS | 30 | 216 | 0 | s1 =input()
upper_case_letters=0
for ch in s1:
if ch.isupper():
upper_case_letters+=1
if upper_case_letters>len(s1)//2:
print(s1.upper())
else:
print(s1.lower())
# numOfColumns= int(input())
# l=sorted(map(int,input().split()))
# print(" ".join(map(str,l)))
#---------------... | Title: Word
Time Limit: 2 seconds
Memory Limit: 256 megabytes
Problem Description:
Vasya is very upset that many people on the Net mix uppercase and lowercase letters in one word. That's why he decided to invent an extension for his favorite browser that would change the letters' register in every word so that it ei... | ```python
s1 =input()
upper_case_letters=0
for ch in s1:
if ch.isupper():
upper_case_letters+=1
if upper_case_letters>len(s1)//2:
print(s1.upper())
else:
print(s1.lower())
# numOfColumns= int(input())
# l=sorted(map(int,input().split()))
# print(" ".join(map(str,l)))
#-----... | 3.946 | MatrixStudio/Codeforces-Python-Submissions |
883 | M | Quadcopter Competition | PROGRAMMING | 1,100 | [
"greedy",
"math"
] | null | null | Polycarp takes part in a quadcopter competition. According to the rules a flying robot should:
- start the race from some point of a field, - go around the flag, - close cycle returning back to the starting point.
Polycarp knows the coordinates of the starting point (*x*1,<=*y*1) and the coordinates of the point w... | The first line contains two integer numbers *x*1 and *y*1 (<=-<=100<=≤<=*x*1,<=*y*1<=≤<=100) — coordinates of the quadcopter starting (and finishing) point.
The second line contains two integer numbers *x*2 and *y*2 (<=-<=100<=≤<=*x*2,<=*y*2<=≤<=100) — coordinates of the flag.
It is guaranteed that the quadcopter sta... | Print the length of minimal path of the quadcopter to surround the flag and return back. | [
"1 5\n5 2\n",
"0 1\n0 0\n"
] | [
"18\n",
"8\n"
] | none | 0 | [
{
"input": "1 5\n5 2",
"output": "18"
},
{
"input": "0 1\n0 0",
"output": "8"
},
{
"input": "-100 -100\n100 100",
"output": "804"
},
{
"input": "-100 -100\n-100 100",
"output": "406"
},
{
"input": "-100 -100\n100 -100",
"output": "406"
},
{
"input": "1... | 1,619,348,612 | 2,147,483,647 | PyPy 3 | OK | TESTS | 100 | 171 | 0 | cc = list(map(int, input().split()))
fc = list(map(int, input().split()))
print(2*(((abs(fc[0] - cc[0]) if fc[0] - cc[0] != 0 else 1) + 1) + ((abs(fc[1] - cc[1]) if fc[1] - cc[1] != 0 else 1) + 1))) | Title: Quadcopter Competition
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Polycarp takes part in a quadcopter competition. According to the rules a flying robot should:
- start the race from some point of a field, - go around the flag, - close cycle returning back to the starting p... | ```python
cc = list(map(int, input().split()))
fc = list(map(int, input().split()))
print(2*(((abs(fc[0] - cc[0]) if fc[0] - cc[0] != 0 else 1) + 1) + ((abs(fc[1] - cc[1]) if fc[1] - cc[1] != 0 else 1) + 1)))
``` | 3 | MatrixStudio/Codeforces-Python-Submissions | |
463 | B | Caisa and Pylons | PROGRAMMING | 1,100 | [
"brute force",
"implementation",
"math"
] | null | null | Caisa solved the problem with the sugar and now he is on the way back to home.
Caisa is playing a mobile game during his path. There are (*n*<=+<=1) pylons numbered from 0 to *n* in this game. The pylon with number 0 has zero height, the pylon with number *i* (*i*<=><=0) has height *h**i*. The goal of the game is ... | The first line contains integer *n* (1<=≤<=*n*<=≤<=105). The next line contains *n* integers *h*1, *h*2,<=..., *h**n* (1<=<=≤<=<=*h**i*<=<=≤<=<=105) representing the heights of the pylons. | Print a single number representing the minimum number of dollars paid by Caisa. | [
"5\n3 4 3 2 4\n",
"3\n4 4 4\n"
] | [
"4\n",
"4\n"
] | In the first sample he can pay 4 dollars and increase the height of pylon with number 0 by 4 units. Then he can safely pass to the last pylon. | 1,000 | [
{
"input": "5\n3 4 3 2 4",
"output": "4"
},
{
"input": "3\n4 4 4",
"output": "4"
},
{
"input": "99\n1401 2019 1748 3785 3236 3177 3443 3772 2138 1049 353 908 310 2388 1322 88 2160 2783 435 2248 1471 706 2468 2319 3156 3506 2794 1999 1983 2519 2597 3735 537 344 3519 3772 3872 2961 3895 20... | 1,594,024,515 | 2,147,483,647 | Python 3 | OK | TESTS | 49 | 124 | 14,438,400 | a = int(input())
b = list(int(x) for x in input().split())
print(max(b)) | Title: Caisa and Pylons
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Caisa solved the problem with the sugar and now he is on the way back to home.
Caisa is playing a mobile game during his path. There are (*n*<=+<=1) pylons numbered from 0 to *n* in this game. The pylon with number 0... | ```python
a = int(input())
b = list(int(x) for x in input().split())
print(max(b))
``` | 3 | MatrixStudio/Codeforces-Python-Submissions | |
618 | A | Slime Combining | PROGRAMMING | 800 | [
"implementation"
] | null | null | Your friend recently gave you some slimes for your birthday. You have *n* slimes all initially with value 1.
You are going to play a game with these slimes. Initially, you put a single slime by itself in a row. Then, you will add the other *n*<=-<=1 slimes one by one. When you add a slime, you place it at the right of... | The first line of the input will contain a single integer, *n* (1<=≤<=*n*<=≤<=100<=000). | Output a single line with *k* integers, where *k* is the number of slimes in the row after you've finished the procedure described in the problem statement. The *i*-th of these numbers should be the value of the *i*-th slime from the left. | [
"1\n",
"2\n",
"3\n",
"8\n"
] | [
"1\n",
"2\n",
"2 1\n",
"4\n"
] | In the first sample, we only have a single slime with value 1. The final state of the board is just a single slime with value 1.
In the second sample, we perform the following steps:
Initially we place a single slime in a row by itself. Thus, row is initially 1.
Then, we will add another slime. The row is now 1 1. S... | 500 | [
{
"input": "1",
"output": "1"
},
{
"input": "2",
"output": "2"
},
{
"input": "3",
"output": "2 1"
},
{
"input": "8",
"output": "4"
},
{
"input": "100000",
"output": "17 16 11 10 8 6"
},
{
"input": "12345",
"output": "14 13 6 5 4 1"
},
{
"in... | 1,692,543,039 | 2,147,483,647 | Python 3 | OK | TESTS | 27 | 77 | 0 | n=int(input())
l=[1]
for i in range(n-1):
l.append(1)
while len(l)>=2 and l[-1]==l[-2]:
l.pop(-1)
l[-1]+=1
print(' '.join(map(str,l))) | Title: Slime Combining
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Your friend recently gave you some slimes for your birthday. You have *n* slimes all initially with value 1.
You are going to play a game with these slimes. Initially, you put a single slime by itself in a row. Then, y... | ```python
n=int(input())
l=[1]
for i in range(n-1):
l.append(1)
while len(l)>=2 and l[-1]==l[-2]:
l.pop(-1)
l[-1]+=1
print(' '.join(map(str,l)))
``` | 3 | MatrixStudio/Codeforces-Python-Submissions | |
681 | A | A Good Contest | PROGRAMMING | 800 | [
"implementation"
] | null | null | Codeforces user' handle color depends on his rating — it is red if his rating is greater or equal to 2400; it is orange if his rating is less than 2400 but greater or equal to 2200, etc. Each time participant takes part in a rated contest, his rating is changed depending on his performance.
Anton wants the color of hi... | The first line of the input contains a single integer *n* (1<=≤<=*n*<=≤<=100) — the number of participants Anton has outscored in this contest .
The next *n* lines describe participants results: the *i*-th of them consists of a participant handle *name**i* and two integers *before**i* and *after**i* (<=-<=4000<=≤<=*be... | Print «YES» (quotes for clarity), if Anton has performed good in the contest and «NO» (quotes for clarity) otherwise. | [
"3\nBurunduk1 2526 2537\nBudAlNik 2084 2214\nsubscriber 2833 2749\n",
"3\nApplejack 2400 2400\nFluttershy 2390 2431\nPinkie_Pie -2500 -2450\n"
] | [
"YES",
"NO"
] | In the first sample, Anton has outscored user with handle Burunduk1, whose handle was colored red before the contest and his rating has increased after the contest.
In the second sample, Applejack's rating has not increased after the contest, while both Fluttershy's and Pinkie_Pie's handles were not colored red before... | 500 | [
{
"input": "3\nBurunduk1 2526 2537\nBudAlNik 2084 2214\nsubscriber 2833 2749",
"output": "YES"
},
{
"input": "3\nApplejack 2400 2400\nFluttershy 2390 2431\nPinkie_Pie -2500 -2450",
"output": "NO"
},
{
"input": "1\nDb -3373 3591",
"output": "NO"
},
{
"input": "5\nQ2bz 960 2342... | 1,542,110,716 | 2,147,483,647 | Python 3 | OK | TESTS | 60 | 124 | 0 | n = int(input())
for i in range(n):
n, b, a = input().split()
B = int(b)
A = int(a)
if A-B > 0 and B >= 2400:
print('YES')
quit()
print('NO')
| Title: A Good Contest
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Codeforces user' handle color depends on his rating — it is red if his rating is greater or equal to 2400; it is orange if his rating is less than 2400 but greater or equal to 2200, etc. Each time participant takes part ... | ```python
n = int(input())
for i in range(n):
n, b, a = input().split()
B = int(b)
A = int(a)
if A-B > 0 and B >= 2400:
print('YES')
quit()
print('NO')
``` | 3 | MatrixStudio/Codeforces-Python-Submissions | |
745 | A | Hongcow Learns the Cyclic Shift | PROGRAMMING | 900 | [
"implementation",
"strings"
] | null | null | Hongcow is learning to spell! One day, his teacher gives him a word that he needs to learn to spell. Being a dutiful student, he immediately learns how to spell the word.
Hongcow has decided to try to make new words from this one. He starts by taking the word he just learned how to spell, and moves the last character ... | The first line of input will be a single string *s* (1<=≤<=|*s*|<=≤<=50), the word Hongcow initially learns how to spell. The string *s* consists only of lowercase English letters ('a'–'z'). | Output a single integer equal to the number of distinct strings that Hongcow can obtain by applying the cyclic shift arbitrarily many times to the given string. | [
"abcd\n",
"bbb\n",
"yzyz\n"
] | [
"4\n",
"1\n",
"2\n"
] | For the first sample, the strings Hongcow can generate are "abcd", "dabc", "cdab", and "bcda".
For the second sample, no matter how many times Hongcow does the cyclic shift, Hongcow can only generate "bbb".
For the third sample, the two strings Hongcow can generate are "yzyz" and "zyzy". | 500 | [
{
"input": "abcd",
"output": "4"
},
{
"input": "bbb",
"output": "1"
},
{
"input": "yzyz",
"output": "2"
},
{
"input": "abcdefghijklmnopqrstuvwxyabcdefghijklmnopqrstuvwxy",
"output": "25"
},
{
"input": "zclkjadoprqronzclkjadoprqronzclkjadoprqron",
"output": "14... | 1,632,848,016 | 2,147,483,647 | PyPy 3 | OK | TESTS | 28 | 108 | 20,172,800 | word = input()
masW = []
def h(word, masW):
if word not in masW:
masW.append(word)
h(word[-1]+word[0:-1], masW)
else:
print(len(masW))
h(word,masW)
| Title: Hongcow Learns the Cyclic Shift
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Hongcow is learning to spell! One day, his teacher gives him a word that he needs to learn to spell. Being a dutiful student, he immediately learns how to spell the word.
Hongcow has decided to try to m... | ```python
word = input()
masW = []
def h(word, masW):
if word not in masW:
masW.append(word)
h(word[-1]+word[0:-1], masW)
else:
print(len(masW))
h(word,masW)
``` | 3 | MatrixStudio/Codeforces-Python-Submissions | |
764 | A | Taymyr is calling you | PROGRAMMING | 800 | [
"brute force",
"implementation",
"math"
] | null | null | Comrade Dujikov is busy choosing artists for Timofey's birthday and is recieving calls from Taymyr from Ilia-alpinist.
Ilia-alpinist calls every *n* minutes, i.e. in minutes *n*, 2*n*, 3*n* and so on. Artists come to the comrade every *m* minutes, i.e. in minutes *m*, 2*m*, 3*m* and so on. The day is *z* minutes long,... | The only string contains three integers — *n*, *m* and *z* (1<=≤<=*n*,<=*m*,<=*z*<=≤<=104). | Print single integer — the minimum number of artists that should be killed so that there are no artists in the room when Ilia calls. | [
"1 1 10\n",
"1 2 5\n",
"2 3 9\n"
] | [
"10\n",
"2\n",
"1\n"
] | Taymyr is a place in the north of Russia.
In the first test the artists come each minute, as well as the calls, so we need to kill all of them.
In the second test we need to kill artists which come on the second and the fourth minutes.
In the third test — only the artist which comes on the sixth minute. | 500 | [
{
"input": "1 1 10",
"output": "10"
},
{
"input": "1 2 5",
"output": "2"
},
{
"input": "2 3 9",
"output": "1"
},
{
"input": "4 8 9",
"output": "1"
},
{
"input": "7 9 2",
"output": "0"
},
{
"input": "10000 10000 10000",
"output": "1"
},
{
"i... | 1,570,632,706 | 2,147,483,647 | PyPy 3 | WRONG_ANSWER | TESTS | 5 | 124 | 0 | a,b,c=map(int,input().split(" "))
if(a*b>c):
print((b//a)-1)
else:
print(c//(a*b))
| Title: Taymyr is calling you
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Comrade Dujikov is busy choosing artists for Timofey's birthday and is recieving calls from Taymyr from Ilia-alpinist.
Ilia-alpinist calls every *n* minutes, i.e. in minutes *n*, 2*n*, 3*n* and so on. Artists com... | ```python
a,b,c=map(int,input().split(" "))
if(a*b>c):
print((b//a)-1)
else:
print(c//(a*b))
``` | 0 | MatrixStudio/Codeforces-Python-Submissions | |
33 | A | What is for dinner? | PROGRAMMING | 1,200 | [
"greedy",
"implementation"
] | A. What is for dinner? | 2 | 256 | In one little known, but very beautiful country called Waterland, lives a lovely shark Valerie. Like all the sharks, she has several rows of teeth, and feeds on crucians. One of Valerie's distinguishing features is that while eating one crucian she uses only one row of her teeth, the rest of the teeth are "relaxing".
... | The first line contains three integers *n*, *m*, *k* (1<=≤<=*m*<=≤<=*n*<=≤<=1000,<=0<=≤<=*k*<=≤<=106) — total amount of Valerie's teeth, amount of tooth rows and amount of crucians in Valerie's portion for dinner. Then follow *n* lines, each containing two integers: *r* (1<=≤<=*r*<=≤<=*m*) — index of the row, where bel... | In the first line output the maximum amount of crucians that Valerie can consume for dinner. | [
"4 3 18\n2 3\n1 2\n3 6\n2 3\n",
"2 2 13\n1 13\n2 12\n"
] | [
"11\n",
"13\n"
] | none | 500 | [
{
"input": "4 3 18\n2 3\n1 2\n3 6\n2 3",
"output": "11"
},
{
"input": "2 2 13\n1 13\n2 12",
"output": "13"
},
{
"input": "5 4 8\n4 6\n4 5\n1 3\n2 0\n3 3",
"output": "8"
},
{
"input": "1 1 0\n1 3",
"output": "0"
},
{
"input": "7 1 30\n1 8\n1 15\n1 5\n1 17\n1 9\n1 1... | 1,696,296,234 | 2,147,483,647 | PyPy 3-64 | WRONG_ANSWER | TESTS | 0 | 92 | 0 | print("hello there, world!") | Title: What is for dinner?
Time Limit: 2 seconds
Memory Limit: 256 megabytes
Problem Description:
In one little known, but very beautiful country called Waterland, lives a lovely shark Valerie. Like all the sharks, she has several rows of teeth, and feeds on crucians. One of Valerie's distinguishing features is that... | ```python
print("hello there, world!")
``` | 0 | MatrixStudio/Codeforces-Python-Submissions |
976 | B | Lara Croft and the New Game | PROGRAMMING | 1,300 | [
"implementation",
"math"
] | null | null | You might have heard about the next game in Lara Croft series coming out this year. You also might have watched its trailer. Though you definitely missed the main idea about its plot, so let me lift the veil of secrecy.
Lara is going to explore yet another dangerous dungeon. Game designers decided to use good old 2D e... | The only line contains three integers *n*, *m* and *k* (2<=≤<=*n*,<=*m*<=≤<=109, *n* is always even, 0<=≤<=*k*<=<<=*n*·*m*). Note that *k* doesn't fit into 32-bit integer type! | Print the cell (the row and the column where the cell is situated) where Lara ends up after she moves *k* times. | [
"4 3 0\n",
"4 3 11\n",
"4 3 7\n"
] | [
"1 1\n",
"1 2\n",
"3 2\n"
] | Here is her path on matrix 4 by 3: | 0 | [
{
"input": "4 3 0",
"output": "1 1"
},
{
"input": "4 3 11",
"output": "1 2"
},
{
"input": "4 3 7",
"output": "3 2"
},
{
"input": "1000000000 2 1999999999",
"output": "1 2"
},
{
"input": "1000000000 1000000000 999999999999999999",
"output": "1 2"
},
{
"... | 1,540,739,181 | 2,147,483,647 | Python 3 | WRONG_ANSWER | TESTS | 0 | 108 | 0 | n, m, k = map(int, input().split())
if k < n:
print(k + 1, sep="/n")
k -= n
r = int(k/(m - 1))
print(n - r)
if r & 1 == 1:
print(m - k % (m - 1))
else:
print(k % (m - 1) + 2) | Title: Lara Croft and the New Game
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
You might have heard about the next game in Lara Croft series coming out this year. You also might have watched its trailer. Though you definitely missed the main idea about its plot, so let me lift the veil... | ```python
n, m, k = map(int, input().split())
if k < n:
print(k + 1, sep="/n")
k -= n
r = int(k/(m - 1))
print(n - r)
if r & 1 == 1:
print(m - k % (m - 1))
else:
print(k % (m - 1) + 2)
``` | 0 | MatrixStudio/Codeforces-Python-Submissions | |
709 | A | Juicer | PROGRAMMING | 900 | [
"implementation"
] | null | null | Kolya is going to make fresh orange juice. He has *n* oranges of sizes *a*1,<=*a*2,<=...,<=*a**n*. Kolya will put them in the juicer in the fixed order, starting with orange of size *a*1, then orange of size *a*2 and so on. To be put in the juicer the orange must have size not exceeding *b*, so if Kolya sees an orange ... | The first line of the input contains three integers *n*, *b* and *d* (1<=≤<=*n*<=≤<=100<=000, 1<=≤<=*b*<=≤<=*d*<=≤<=1<=000<=000) — the number of oranges, the maximum size of the orange that fits in the juicer and the value *d*, which determines the condition when the waste section should be emptied.
The second line co... | Print one integer — the number of times Kolya will have to empty the waste section. | [
"2 7 10\n5 6\n",
"1 5 10\n7\n",
"3 10 10\n5 7 7\n",
"1 1 1\n1\n"
] | [
"1\n",
"0\n",
"1\n",
"0\n"
] | In the first sample, Kolya will squeeze the juice from two oranges and empty the waste section afterwards.
In the second sample, the orange won't fit in the juicer so Kolya will have no juice at all. | 500 | [
{
"input": "2 7 10\n5 6",
"output": "1"
},
{
"input": "1 5 10\n7",
"output": "0"
},
{
"input": "3 10 10\n5 7 7",
"output": "1"
},
{
"input": "1 1 1\n1",
"output": "0"
},
{
"input": "2 951637 951638\n44069 951637",
"output": "1"
},
{
"input": "50 100 12... | 1,698,025,970 | 2,147,483,647 | PyPy 3-64 | OK | TESTS | 58 | 92 | 13,516,800 | n, b, d = map(int, input().split())
sizes = list(map(int, input().split()))
waste_section = 0 # Initialize the waste section size
empty_count = 0 # Initialize the number of times waste section is emptied
for size in sizes:
if size > b:
continue # Skip oranges that are too big for the juicer
... | Title: Juicer
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Kolya is going to make fresh orange juice. He has *n* oranges of sizes *a*1,<=*a*2,<=...,<=*a**n*. Kolya will put them in the juicer in the fixed order, starting with orange of size *a*1, then orange of size *a*2 and so on. To b... | ```python
n, b, d = map(int, input().split())
sizes = list(map(int, input().split()))
waste_section = 0 # Initialize the waste section size
empty_count = 0 # Initialize the number of times waste section is emptied
for size in sizes:
if size > b:
continue # Skip oranges that are too big for the ... | 3 | MatrixStudio/Codeforces-Python-Submissions | |
672 | B | Different is Good | PROGRAMMING | 1,000 | [
"constructive algorithms",
"implementation",
"strings"
] | null | null | A wise man told Kerem "Different is good" once, so Kerem wants all things in his life to be different.
Kerem recently got a string *s* consisting of lowercase English letters. Since Kerem likes it when things are different, he wants all substrings of his string *s* to be distinct. Substring is a string formed by some... | The first line of the input contains an integer *n* (1<=≤<=*n*<=≤<=100<=000) — the length of the string *s*.
The second line contains the string *s* of length *n* consisting of only lowercase English letters. | If it's impossible to change the string *s* such that all its substring are distinct print -1. Otherwise print the minimum required number of changes. | [
"2\naa\n",
"4\nkoko\n",
"5\nmurat\n"
] | [
"1\n",
"2\n",
"0\n"
] | In the first sample one of the possible solutions is to change the first character to 'b'.
In the second sample, one may change the first character to 'a' and second character to 'b', so the string becomes "abko". | 1,000 | [
{
"input": "2\naa",
"output": "1"
},
{
"input": "4\nkoko",
"output": "2"
},
{
"input": "5\nmurat",
"output": "0"
},
{
"input": "6\nacbead",
"output": "1"
},
{
"input": "7\ncdaadad",
"output": "4"
},
{
"input": "25\npeoaicnbisdocqofsqdpgobpn",
"outp... | 1,628,425,209 | 2,147,483,647 | PyPy 3 | OK | TESTS | 47 | 124 | 20,992,000 | from collections import Counter
input()
s = input()
if len(s) <= 26:
cnt = Counter(s)
res = 0
for v in cnt.values():
if v > 1:
res += v - 1
print(res)
else:
print(-1) | Title: Different is Good
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
A wise man told Kerem "Different is good" once, so Kerem wants all things in his life to be different.
Kerem recently got a string *s* consisting of lowercase English letters. Since Kerem likes it when things are di... | ```python
from collections import Counter
input()
s = input()
if len(s) <= 26:
cnt = Counter(s)
res = 0
for v in cnt.values():
if v > 1:
res += v - 1
print(res)
else:
print(-1)
``` | 3 | MatrixStudio/Codeforces-Python-Submissions | |
291 | A | Spyke Talks | PROGRAMMING | 800 | [
"*special",
"implementation",
"sortings"
] | null | null | Polycarpus is the director of a large corporation. There are *n* secretaries working for the corporation, each of them corresponds via the famous Spyke VoIP system during the day. We know that when two people call each other via Spyke, the Spyke network assigns a unique ID to this call, a positive integer session numbe... | The first line contains integer *n* (1<=≤<=*n*<=≤<=103) — the number of secretaries in Polycarpus's corporation. The next line contains *n* space-separated integers: *id*1,<=*id*2,<=...,<=*id**n* (0<=≤<=*id**i*<=≤<=109). Number *id**i* equals the number of the call session of the *i*-th secretary, if the secretary is t... | Print a single integer — the number of pairs of chatting secretaries, or -1 if Polycarpus's got a mistake in his records and the described situation could not have taken place. | [
"6\n0 1 7 1 7 10\n",
"3\n1 1 1\n",
"1\n0\n"
] | [
"2\n",
"-1\n",
"0\n"
] | In the first test sample there are two Spyke calls between secretaries: secretary 2 and secretary 4, secretary 3 and secretary 5.
In the second test sample the described situation is impossible as conferences aren't allowed. | 500 | [
{
"input": "6\n0 1 7 1 7 10",
"output": "2"
},
{
"input": "3\n1 1 1",
"output": "-1"
},
{
"input": "1\n0",
"output": "0"
},
{
"input": "5\n2 2 1 1 3",
"output": "2"
},
{
"input": "1\n1",
"output": "0"
},
{
"input": "10\n4 21 3 21 21 1 1 2 2 3",
"ou... | 1,593,275,109 | 2,147,483,647 | PyPy 3 | WRONG_ANSWER | TESTS | 7 | 248 | 20,172,800 | n = int(input())
l = [int(x) for x in input().split()]
ans = 0
g = list(set(l))
for i in g:
c = l.count(i)
if c == 2:
ans += 1
elif c > 2:
ans = -1
break
print(ans) | Title: Spyke Talks
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Polycarpus is the director of a large corporation. There are *n* secretaries working for the corporation, each of them corresponds via the famous Spyke VoIP system during the day. We know that when two people call each othe... | ```python
n = int(input())
l = [int(x) for x in input().split()]
ans = 0
g = list(set(l))
for i in g:
c = l.count(i)
if c == 2:
ans += 1
elif c > 2:
ans = -1
break
print(ans)
``` | 0 | MatrixStudio/Codeforces-Python-Submissions | |
577 | A | Multiplication Table | PROGRAMMING | 1,000 | [
"implementation",
"number theory"
] | null | null | Let's consider a table consisting of *n* rows and *n* columns. The cell located at the intersection of *i*-th row and *j*-th column contains number *i*<=×<=*j*. The rows and columns are numbered starting from 1.
You are given a positive integer *x*. Your task is to count the number of cells in a table that contain num... | The single line contains numbers *n* and *x* (1<=≤<=*n*<=≤<=105, 1<=≤<=*x*<=≤<=109) — the size of the table and the number that we are looking for in the table. | Print a single number: the number of times *x* occurs in the table. | [
"10 5\n",
"6 12\n",
"5 13\n"
] | [
"2\n",
"4\n",
"0\n"
] | A table for the second sample test is given below. The occurrences of number 12 are marked bold. | 500 | [
{
"input": "10 5",
"output": "2"
},
{
"input": "6 12",
"output": "4"
},
{
"input": "5 13",
"output": "0"
},
{
"input": "1 1",
"output": "1"
},
{
"input": "2 1",
"output": "1"
},
{
"input": "100000 1",
"output": "1"
},
{
"input": "1 10000000... | 1,660,239,193 | 2,147,483,647 | Python 3 | RUNTIME_ERROR | TESTS | 0 | 15 | 0 | n=int(input())
x=int(input())
count=0
for i in range(1,x+1,1):
if x%i==0 and i<=n and int(x/i)<=n:
count+=1
print(count) | Title: Multiplication Table
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Let's consider a table consisting of *n* rows and *n* columns. The cell located at the intersection of *i*-th row and *j*-th column contains number *i*<=×<=*j*. The rows and columns are numbered starting from 1.
Y... | ```python
n=int(input())
x=int(input())
count=0
for i in range(1,x+1,1):
if x%i==0 and i<=n and int(x/i)<=n:
count+=1
print(count)
``` | -1 | MatrixStudio/Codeforces-Python-Submissions | |
929 | A | Прокат велосипедов | PROGRAMMING | 1,400 | [
"*special",
"greedy",
"implementation"
] | null | null | Как известно, в теплую погоду многие жители крупных городов пользуются сервисами городского велопроката. Вот и Аркадий сегодня будет добираться от школы до дома, используя городские велосипеды.
Школа и дом находятся на одной прямой улице, кроме того, на той же улице есть *n* точек, где можно взять велосипед в прокат и... | В первой строке следуют два целых числа *n* и *k* (2<=≤<=*n*<=≤<=1<=000, 1<=≤<=*k*<=≤<=100<=000) — количество велопрокатов и максимальное расстояние, которое Аркадий может проехать на одном велосипеде.
В следующей строке следует последовательность целых чисел *x*1,<=*x*2,<=...,<=*x**n* (0<=≤<=*x*1<=<<=*x*2<=<<=.... | Если Аркадий не сможет добраться от школы до дома только на велосипедах, выведите -1. В противном случае, выведите минимальное количество велосипедов, которые Аркадию нужно взять в точках проката. | [
"4 4\n3 6 8 10\n",
"2 9\n10 20\n",
"12 3\n4 6 7 9 10 11 13 15 17 18 20 21\n"
] | [
"2\n",
"-1\n",
"6\n"
] | В первом примере Аркадий должен взять первый велосипед в первом велопрокате и доехать на нём до второго велопроката. Во втором велопрокате он должен взять новый велосипед, на котором он сможет добраться до четвертого велопроката, рядом с которым и находится его дом. Поэтому Аркадию нужно всего два велосипеда, чтобы доб... | 500 | [
{
"input": "4 4\n3 6 8 10",
"output": "2"
},
{
"input": "2 9\n10 20",
"output": "-1"
},
{
"input": "12 3\n4 6 7 9 10 11 13 15 17 18 20 21",
"output": "6"
},
{
"input": "2 1\n11164 11165",
"output": "1"
},
{
"input": "3 7\n45823 45825 45829",
"output": "1"
},... | 1,520,017,216 | 12,316 | Python 3 | OK | TESTS | 52 | 62 | 5,632,000 | def test1():
n, k = map(int, input().split())
a = list(map(int, input().split()))
pos = a[0]
safety_pos = pos
count = 1
i = 1
while i<len(a):
if a[i] <= pos+k:
safety_pos = a[i]
i = i + 1
else:
if safety_pos == pos:
... | Title: Прокат велосипедов
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Как известно, в теплую погоду многие жители крупных городов пользуются сервисами городского велопроката. Вот и Аркадий сегодня будет добираться от школы до дома, используя городские велосипеды.
Школа и дом находятся... | ```python
def test1():
n, k = map(int, input().split())
a = list(map(int, input().split()))
pos = a[0]
safety_pos = pos
count = 1
i = 1
while i<len(a):
if a[i] <= pos+k:
safety_pos = a[i]
i = i + 1
else:
if safety_pos == pos:... | 3 | MatrixStudio/Codeforces-Python-Submissions | |
61 | A | Ultra-Fast Mathematician | PROGRAMMING | 800 | [
"implementation"
] | A. Ultra-Fast Mathematician | 2 | 256 | Shapur was an extremely gifted student. He was great at everything including Combinatorics, Algebra, Number Theory, Geometry, Calculus, etc. He was not only smart but extraordinarily fast! He could manage to sum 1018 numbers in a single second.
One day in 230 AD Shapur was trying to find out if any one can possibly do... | There are two lines in each input. Each of them contains a single number. It is guaranteed that the numbers are made from 0 and 1 only and that their length is same. The numbers may start with 0. The length of each number doesn't exceed 100. | Write one line — the corresponding answer. Do not omit the leading 0s. | [
"1010100\n0100101\n",
"000\n111\n",
"1110\n1010\n",
"01110\n01100\n"
] | [
"1110001\n",
"111\n",
"0100\n",
"00010\n"
] | none | 500 | [
{
"input": "1010100\n0100101",
"output": "1110001"
},
{
"input": "000\n111",
"output": "111"
},
{
"input": "1110\n1010",
"output": "0100"
},
{
"input": "01110\n01100",
"output": "00010"
},
{
"input": "011101\n000001",
"output": "011100"
},
{
"input": "... | 1,652,168,403 | 2,147,483,647 | Python 3 | WRONG_ANSWER | TESTS | 0 | 15 | 0 | n = input()
m = input()
a = []
if len(n)==len(m):
for i in range(0,len(n)):
if n[i]!=m[i]:
a.append('1')
elif n[i]==m[i]:
a.append('0')
print(*a)
| Title: Ultra-Fast Mathematician
Time Limit: 2 seconds
Memory Limit: 256 megabytes
Problem Description:
Shapur was an extremely gifted student. He was great at everything including Combinatorics, Algebra, Number Theory, Geometry, Calculus, etc. He was not only smart but extraordinarily fast! He could manage to sum 10... | ```python
n = input()
m = input()
a = []
if len(n)==len(m):
for i in range(0,len(n)):
if n[i]!=m[i]:
a.append('1')
elif n[i]==m[i]:
a.append('0')
print(*a)
``` | 0 | MatrixStudio/Codeforces-Python-Submissions |
870 | C | Maximum splitting | PROGRAMMING | 1,300 | [
"dp",
"greedy",
"math",
"number theory"
] | null | null | You are given several queries. In the *i*-th query you are given a single positive integer *n**i*. You are to represent *n**i* as a sum of maximum possible number of composite summands and print this maximum number, or print -1, if there are no such splittings.
An integer greater than 1 is composite, if it is not prim... | The first line contains single integer *q* (1<=≤<=*q*<=≤<=105) — the number of queries.
*q* lines follow. The (*i*<=+<=1)-th line contains single integer *n**i* (1<=≤<=*n**i*<=≤<=109) — the *i*-th query. | For each query print the maximum possible number of summands in a valid splitting to composite summands, or -1, if there are no such splittings. | [
"1\n12\n",
"2\n6\n8\n",
"3\n1\n2\n3\n"
] | [
"3\n",
"1\n2\n",
"-1\n-1\n-1\n"
] | 12 = 4 + 4 + 4 = 4 + 8 = 6 + 6 = 12, but the first splitting has the maximum possible number of summands.
8 = 4 + 4, 6 can't be split into several composite summands.
1, 2, 3 are less than any composite number, so they do not have valid splittings. | 1,500 | [
{
"input": "1\n12",
"output": "3"
},
{
"input": "2\n6\n8",
"output": "1\n2"
},
{
"input": "3\n1\n2\n3",
"output": "-1\n-1\n-1"
},
{
"input": "6\n1\n2\n3\n5\n7\n11",
"output": "-1\n-1\n-1\n-1\n-1\n-1"
},
{
"input": "3\n4\n6\n9",
"output": "1\n1\n1"
},
{
... | 1,577,800,555 | 2,147,483,647 | PyPy 3 | OK | TESTS | 20 | 1,341 | 8,806,400 | for _ in range(int(input())):
n=int(input())
if n in [1,2,3,5,7,11]:
print(-1)
elif n%2!=0:
print((n-9)//4 +1)
else:
print(n//4)
| Title: Maximum splitting
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
You are given several queries. In the *i*-th query you are given a single positive integer *n**i*. You are to represent *n**i* as a sum of maximum possible number of composite summands and print this maximum number, o... | ```python
for _ in range(int(input())):
n=int(input())
if n in [1,2,3,5,7,11]:
print(-1)
elif n%2!=0:
print((n-9)//4 +1)
else:
print(n//4)
``` | 3 | MatrixStudio/Codeforces-Python-Submissions | |
411 | A | Password Check | PROGRAMMING | 800 | [
"*special",
"implementation"
] | null | null | You have probably registered on Internet sites many times. And each time you should enter your invented password. Usually the registration form automatically checks the password's crypt resistance. If the user's password isn't complex enough, a message is displayed. Today your task is to implement such an automatic che... | The first line contains a non-empty sequence of characters (at most 100 characters). Each character is either a large English letter, or a small English letter, or a digit, or one of characters: "!", "?", ".", ",", "_". | If the password is complex enough, print message "Correct" (without the quotes), otherwise print message "Too weak" (without the quotes). | [
"abacaba\n",
"X12345\n",
"CONTEST_is_STARTED!!11\n"
] | [
"Too weak\n",
"Too weak\n",
"Correct\n"
] | none | 0 | [
{
"input": "abacaba",
"output": "Too weak"
},
{
"input": "X12345",
"output": "Too weak"
},
{
"input": "CONTEST_is_STARTED!!11",
"output": "Correct"
},
{
"input": "1zA__",
"output": "Correct"
},
{
"input": "1zA_",
"output": "Too weak"
},
{
"input": "zA_... | 1,412,409,793 | 2,147,483,647 | Python 3 | OK | TESTS | 81 | 61 | 0 | s = input()
ans = "Correct"
if len(s) < 5:
ans = "Too weak"
a = 0
b = 0
c = 0
for i in range(len(s)):
if s[i].isalpha():
if s[i].isupper():
a += 1
else:
b += 1
if s[i].isdigit():
c += 1
if a == 0 or b == 0 or c == 0:
ans = "Too weak"
print(ans)
| Title: Password Check
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
You have probably registered on Internet sites many times. And each time you should enter your invented password. Usually the registration form automatically checks the password's crypt resistance. If the user's password... | ```python
s = input()
ans = "Correct"
if len(s) < 5:
ans = "Too weak"
a = 0
b = 0
c = 0
for i in range(len(s)):
if s[i].isalpha():
if s[i].isupper():
a += 1
else:
b += 1
if s[i].isdigit():
c += 1
if a == 0 or b == 0 or c == 0:
ans = "Too weak"
print(ans)
... | 3 | MatrixStudio/Codeforces-Python-Submissions | |
37 | A | Towers | PROGRAMMING | 1,000 | [
"sortings"
] | A. Towers | 2 | 256 | Little Vasya has received a young builder’s kit. The kit consists of several wooden bars, the lengths of all of them are known. The bars can be put one on the top of the other if their lengths are the same.
Vasya wants to construct the minimal number of towers from the bars. Help Vasya to use the bars in the best way ... | The first line contains an integer *N* (1<=≤<=*N*<=≤<=1000) — the number of bars at Vasya’s disposal. The second line contains *N* space-separated integers *l**i* — the lengths of the bars. All the lengths are natural numbers not exceeding 1000. | In one line output two numbers — the height of the largest tower and their total number. Remember that Vasya should use all the bars. | [
"3\n1 2 3\n",
"4\n6 5 6 7\n"
] | [
"1 3\n",
"2 3\n"
] | none | 500 | [
{
"input": "3\n1 2 3",
"output": "1 3"
},
{
"input": "4\n6 5 6 7",
"output": "2 3"
},
{
"input": "4\n3 2 1 1",
"output": "2 3"
},
{
"input": "4\n1 2 3 3",
"output": "2 3"
},
{
"input": "3\n20 22 36",
"output": "1 3"
},
{
"input": "25\n47 30 94 41 45 20... | 1,608,029,170 | 2,147,483,647 | PyPy 3 | OK | TESTS | 61 | 310 | 0 | n = int(input())
nums = [int(j) for j in input().split()]
stream, freq = [], []
for j in range(n):
if nums[j] in stream:
freq[stream.index(nums[j])] += 1
else:
stream.append(nums[j])
freq.append(1)
print(max(freq), len(stream))
| Title: Towers
Time Limit: 2 seconds
Memory Limit: 256 megabytes
Problem Description:
Little Vasya has received a young builder’s kit. The kit consists of several wooden bars, the lengths of all of them are known. The bars can be put one on the top of the other if their lengths are the same.
Vasya wants to construct... | ```python
n = int(input())
nums = [int(j) for j in input().split()]
stream, freq = [], []
for j in range(n):
if nums[j] in stream:
freq[stream.index(nums[j])] += 1
else:
stream.append(nums[j])
freq.append(1)
print(max(freq), len(stream))
``` | 3.9225 | MatrixStudio/Codeforces-Python-Submissions |
145 | A | Lucky Conversion | PROGRAMMING | 1,200 | [
"greedy",
"implementation"
] | null | null | Petya loves lucky numbers very much. Everybody knows that lucky numbers are positive integers whose decimal record contains only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not.
Petya has two strings *a* and *b* of the same length *n*. The strings consist only of lucky digits... | The first and the second line contains strings *a* and *b*, correspondingly. Strings *a* and *b* have equal lengths and contain only lucky digits. The strings are not empty, their length does not exceed 105. | Print on the single line the single number — the minimum number of operations needed to convert string *a* into string *b*. | [
"47\n74\n",
"774\n744\n",
"777\n444\n"
] | [
"1\n",
"1\n",
"3\n"
] | In the first sample it is enough simply to swap the first and the second digit.
In the second sample we should replace the second digit with its opposite.
In the third number we should replace all three digits with their opposites. | 500 | [
{
"input": "47\n74",
"output": "1"
},
{
"input": "774\n744",
"output": "1"
},
{
"input": "777\n444",
"output": "3"
},
{
"input": "74747474\n77777777",
"output": "4"
},
{
"input": "444444444444\n777777777777",
"output": "12"
},
{
"input": "4744744447774... | 1,488,545,441 | 2,147,483,647 | Python 3 | WRONG_ANSWER | TESTS | 1 | 124 | 4,608,000 | x = input("")
y = input("")
count4 = 0
count7 = 0
if x == y:
print(0)
else:
for i in range(len(x)):
if(x[i] == '4'):
count4+=1
elif(x[i] == '7'):
count7+=1
print(count7 if count4<=count7 else count4) | Title: Lucky Conversion
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Petya loves lucky numbers very much. Everybody knows that lucky numbers are positive integers whose decimal record contains only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are no... | ```python
x = input("")
y = input("")
count4 = 0
count7 = 0
if x == y:
print(0)
else:
for i in range(len(x)):
if(x[i] == '4'):
count4+=1
elif(x[i] == '7'):
count7+=1
print(count7 if count4<=count7 else count4)
``` | 0 | MatrixStudio/Codeforces-Python-Submissions | |
576 | A | Vasya and Petya's Game | PROGRAMMING | 1,500 | [
"math",
"number theory"
] | null | null | Vasya and Petya are playing a simple game. Vasya thought of number *x* between 1 and *n*, and Petya tries to guess the number.
Petya can ask questions like: "Is the unknown number divisible by number *y*?".
The game is played by the following rules: first Petya asks all the questions that interest him (also, he can a... | A single line contains number *n* (1<=≤<=*n*<=≤<=103). | Print the length of the sequence of questions *k* (0<=≤<=*k*<=≤<=*n*), followed by *k* numbers — the questions *y**i* (1<=≤<=*y**i*<=≤<=*n*).
If there are several correct sequences of questions of the minimum length, you are allowed to print any of them. | [
"4\n",
"6\n"
] | [
"3\n2 4 3 \n",
"4\n2 4 3 5 \n"
] | The sequence from the answer to the first sample test is actually correct.
If the unknown number is not divisible by one of the sequence numbers, it is equal to 1.
If the unknown number is divisible by 4, it is 4.
If the unknown number is divisible by 3, then the unknown number is 3.
Otherwise, it is equal to 2. Th... | 500 | [
{
"input": "4",
"output": "3\n2 4 3 "
},
{
"input": "6",
"output": "4\n2 4 3 5 "
},
{
"input": "1",
"output": "0"
},
{
"input": "15",
"output": "9\n2 4 8 3 9 5 7 11 13 "
},
{
"input": "19",
"output": "12\n2 4 8 16 3 9 5 7 11 13 17 19 "
},
{
"input": "2... | 1,572,446,527 | 2,147,483,647 | Python 3 | WRONG_ANSWER | TESTS | 3 | 93 | 0 | from math import sqrt
n = int(input())
ans = []
my_dict = {}
def is_prime(n):
if n == 2:
return True
elif n < 2:
return False
for i in range(2, int(sqrt(n))+1):
if n%i == 0:
return False
return True
def divisors(n):
divisores = []
for i in range(2, n):
if n%i == 0:
divisores.append(i)
return di... | Title: Vasya and Petya's Game
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Vasya and Petya are playing a simple game. Vasya thought of number *x* between 1 and *n*, and Petya tries to guess the number.
Petya can ask questions like: "Is the unknown number divisible by number *y*?".
The... | ```python
from math import sqrt
n = int(input())
ans = []
my_dict = {}
def is_prime(n):
if n == 2:
return True
elif n < 2:
return False
for i in range(2, int(sqrt(n))+1):
if n%i == 0:
return False
return True
def divisors(n):
divisores = []
for i in range(2, n):
if n%i == 0:
divisores.append(i)
... | 0 | MatrixStudio/Codeforces-Python-Submissions | |
985 | B | Switches and Lamps | PROGRAMMING | 1,200 | [
"implementation"
] | null | null | You are given *n* switches and *m* lamps. The *i*-th switch turns on some subset of the lamps. This information is given as the matrix *a* consisting of *n* rows and *m* columns where *a**i*,<=*j*<==<=1 if the *i*-th switch turns on the *j*-th lamp and *a**i*,<=*j*<==<=0 if the *i*-th switch is not connected to the *j*... | The first line of the input contains two integers *n* and *m* (1<=≤<=*n*,<=*m*<=≤<=2000) — the number of the switches and the number of the lamps.
The following *n* lines contain *m* characters each. The character *a**i*,<=*j* is equal to '1' if the *i*-th switch turns on the *j*-th lamp and '0' otherwise.
It is guar... | Print "YES" if there is a switch that if you will ignore it and press all the other *n*<=-<=1 switches then all *m* lamps will be turned on. Print "NO" if there is no such switch. | [
"4 5\n10101\n01000\n00111\n10000\n",
"4 5\n10100\n01000\n00110\n00101\n"
] | [
"YES\n",
"NO\n"
] | none | 0 | [
{
"input": "4 5\n10101\n01000\n00111\n10000",
"output": "YES"
},
{
"input": "4 5\n10100\n01000\n00110\n00101",
"output": "NO"
},
{
"input": "1 5\n11111",
"output": "NO"
},
{
"input": "10 1\n1\n0\n0\n0\n0\n0\n0\n0\n0\n1",
"output": "YES"
},
{
"input": "1 1\n1",
... | 1,532,059,198 | 2,147,483,647 | Python 3 | TIME_LIMIT_EXCEEDED | TESTS | 2 | 3,000 | 19,251,200 | n,m=map(int,input().split())
l=[]
for i in range(n):
l.append(int(input()))
from itertools import combinations
p=list(combinations(l,n-1))
c=0
k=int('1'*m)
for i in p:
s=sum(i)
if s>=k and str(s).count('0')==0:
c=1
break
if c:
print("YES")
else:
print("NO")
| Title: Switches and Lamps
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
You are given *n* switches and *m* lamps. The *i*-th switch turns on some subset of the lamps. This information is given as the matrix *a* consisting of *n* rows and *m* columns where *a**i*,<=*j*<==<=1 if the *i*-th... | ```python
n,m=map(int,input().split())
l=[]
for i in range(n):
l.append(int(input()))
from itertools import combinations
p=list(combinations(l,n-1))
c=0
k=int('1'*m)
for i in p:
s=sum(i)
if s>=k and str(s).count('0')==0:
c=1
break
if c:
print("YES")
else:
print("NO")
... | 0 | MatrixStudio/Codeforces-Python-Submissions | |
745 | A | Hongcow Learns the Cyclic Shift | PROGRAMMING | 900 | [
"implementation",
"strings"
] | null | null | Hongcow is learning to spell! One day, his teacher gives him a word that he needs to learn to spell. Being a dutiful student, he immediately learns how to spell the word.
Hongcow has decided to try to make new words from this one. He starts by taking the word he just learned how to spell, and moves the last character ... | The first line of input will be a single string *s* (1<=≤<=|*s*|<=≤<=50), the word Hongcow initially learns how to spell. The string *s* consists only of lowercase English letters ('a'–'z'). | Output a single integer equal to the number of distinct strings that Hongcow can obtain by applying the cyclic shift arbitrarily many times to the given string. | [
"abcd\n",
"bbb\n",
"yzyz\n"
] | [
"4\n",
"1\n",
"2\n"
] | For the first sample, the strings Hongcow can generate are "abcd", "dabc", "cdab", and "bcda".
For the second sample, no matter how many times Hongcow does the cyclic shift, Hongcow can only generate "bbb".
For the third sample, the two strings Hongcow can generate are "yzyz" and "zyzy". | 500 | [
{
"input": "abcd",
"output": "4"
},
{
"input": "bbb",
"output": "1"
},
{
"input": "yzyz",
"output": "2"
},
{
"input": "abcdefghijklmnopqrstuvwxyabcdefghijklmnopqrstuvwxy",
"output": "25"
},
{
"input": "zclkjadoprqronzclkjadoprqronzclkjadoprqron",
"output": "14... | 1,481,993,221 | 721 | Python 3 | WRONG_ANSWER | PRETESTS | 4 | 61 | 4,608,000 | n = input().strip()
l = []
ans = 0
for i in n:
if i not in l:
l.append(i)
ans += 1
if ans >= 26:
break
print(ans) | Title: Hongcow Learns the Cyclic Shift
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Hongcow is learning to spell! One day, his teacher gives him a word that he needs to learn to spell. Being a dutiful student, he immediately learns how to spell the word.
Hongcow has decided to try to m... | ```python
n = input().strip()
l = []
ans = 0
for i in n:
if i not in l:
l.append(i)
ans += 1
if ans >= 26:
break
print(ans)
``` | 0 | MatrixStudio/Codeforces-Python-Submissions | |
143 | B | Help Kingdom of Far Far Away 2 | PROGRAMMING | 1,200 | [
"implementation",
"strings"
] | null | null | For some time the program of rounding numbers that had been developed by the Codeforces participants during one of the previous rounds, helped the citizens of Far Far Away to convert numbers into a more easily readable format. However, as time went by, the economy of the Far Far Away developed and the scale of operatio... | The input contains a number that needs to be converted into financial format. The number's notation length does not exceed 100 characters, including (possible) signs "-" (minus) and "." (decimal point). The number's notation is correct, that is:
- The number's notation only contains characters from the set {"0" – "9... | Print the number given in the input in the financial format by the rules described in the problem statement. | [
"2012\n",
"0.000\n",
"-0.00987654321\n",
"-12345678.9\n"
] | [
"$2,012.00",
"$0.00",
"($0.00)",
"($12,345,678.90)"
] | Pay attention to the second and third sample tests. They show that the sign of a number in the financial format (and consequently, the presence or absence of brackets) is determined solely by the sign of the initial number. It does not depend on the sign of the number you got after translating the number to the financi... | 1,000 | [
{
"input": "2012",
"output": "$2,012.00"
},
{
"input": "0.000",
"output": "$0.00"
},
{
"input": "-0.00987654321",
"output": "($0.00)"
},
{
"input": "-12345678.9",
"output": "($12,345,678.90)"
},
{
"input": "0.99999999999999999999",
"output": "$0.99"
},
{
... | 1,687,869,900 | 2,147,483,647 | PyPy 3-64 | WRONG_ANSWER | TESTS | 0 | 124 | 0 | import sys
import math
input = sys.stdin.readline
if __name__ == '__main__':
n = input().strip() + "0.00"
# ans = "{:,.201f}".format(abs(n))
ans = n.split(".")
ans = "{:,}".format(abs(int(ans[0]))) + "." + ans[1][:2]
ans = "$" + ans
if n[0] == "-":
print("(" + ans + ")")
... | Title: Help Kingdom of Far Far Away 2
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
For some time the program of rounding numbers that had been developed by the Codeforces participants during one of the previous rounds, helped the citizens of Far Far Away to convert numbers into a more e... | ```python
import sys
import math
input = sys.stdin.readline
if __name__ == '__main__':
n = input().strip() + "0.00"
# ans = "{:,.201f}".format(abs(n))
ans = n.split(".")
ans = "{:,}".format(abs(int(ans[0]))) + "." + ans[1][:2]
ans = "$" + ans
if n[0] == "-":
print("(" + ans... | 0 | MatrixStudio/Codeforces-Python-Submissions | |
371 | A | K-Periodic Array | PROGRAMMING | 1,000 | [
"greedy",
"implementation",
"math"
] | null | null | This task will exclusively concentrate only on the arrays where all elements equal 1 and/or 2.
Array *a* is *k*-period if its length is divisible by *k* and there is such array *b* of length *k*, that *a* is represented by array *b* written exactly times consecutively. In other words, array *a* is *k*-periodic, if it... | The first line of the input contains a pair of integers *n*, *k* (1<=≤<=*k*<=≤<=*n*<=≤<=100), where *n* is the length of the array and the value *n* is divisible by *k*. The second line contains the sequence of elements of the given array *a*1,<=*a*2,<=...,<=*a**n* (1<=≤<=*a**i*<=≤<=2), *a**i* is the *i*-th element of ... | Print the minimum number of array elements we need to change to make the array *k*-periodic. If the array already is *k*-periodic, then print 0. | [
"6 2\n2 1 2 2 2 1\n",
"8 4\n1 1 2 1 1 1 2 1\n",
"9 3\n2 1 1 1 2 1 1 1 2\n"
] | [
"1\n",
"0\n",
"3\n"
] | In the first sample it is enough to change the fourth element from 2 to 1, then the array changes to [2, 1, 2, 1, 2, 1].
In the second sample, the given array already is 4-periodic.
In the third sample it is enough to replace each occurrence of number two by number one. In this case the array will look as [1, 1, 1, 1... | 500 | [
{
"input": "6 2\n2 1 2 2 2 1",
"output": "1"
},
{
"input": "8 4\n1 1 2 1 1 1 2 1",
"output": "0"
},
{
"input": "9 3\n2 1 1 1 2 1 1 1 2",
"output": "3"
},
{
"input": "1 1\n2",
"output": "0"
},
{
"input": "2 1\n1 1",
"output": "0"
},
{
"input": "2 2\n2 2... | 1,627,637,373 | 2,147,483,647 | Python 3 | OK | TESTS | 24 | 62 | 6,963,200 | def main_function():
n, k = [int(i) for i in input().split(" ")]
a = [int(i) for i in input().split(" ")]
ratio = n // k
counter = 0
for i in range(k):
counter_1 = 0
counter_2 = 0
for j in range(ratio):
if a[j * k + i] == 1:
counter_1 += ... | Title: K-Periodic Array
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
This task will exclusively concentrate only on the arrays where all elements equal 1 and/or 2.
Array *a* is *k*-period if its length is divisible by *k* and there is such array *b* of length *k*, that *a* is represent... | ```python
def main_function():
n, k = [int(i) for i in input().split(" ")]
a = [int(i) for i in input().split(" ")]
ratio = n // k
counter = 0
for i in range(k):
counter_1 = 0
counter_2 = 0
for j in range(ratio):
if a[j * k + i] == 1:
cou... | 3 | MatrixStudio/Codeforces-Python-Submissions | |
424 | A | Squats | PROGRAMMING | 900 | [
"implementation"
] | null | null | Pasha has many hamsters and he makes them work out. Today, *n* hamsters (*n* is even) came to work out. The hamsters lined up and each hamster either sat down or stood up.
For another exercise, Pasha needs exactly hamsters to stand up and the other hamsters to sit down. In one minute, Pasha can make some hamster ethe... | The first line contains integer *n* (2<=≤<=*n*<=≤<=200; *n* is even). The next line contains *n* characters without spaces. These characters describe the hamsters' position: the *i*-th character equals 'X', if the *i*-th hamster in the row is standing, and 'x', if he is sitting. | In the first line, print a single integer — the minimum required number of minutes. In the second line, print a string that describes the hamsters' position after Pasha makes the required changes. If there are multiple optimal positions, print any of them. | [
"4\nxxXx\n",
"2\nXX\n",
"6\nxXXxXx\n"
] | [
"1\nXxXx\n",
"1\nxX\n",
"0\nxXXxXx\n"
] | none | 500 | [
{
"input": "4\nxxXx",
"output": "1\nXxXx"
},
{
"input": "2\nXX",
"output": "1\nxX"
},
{
"input": "6\nxXXxXx",
"output": "0\nxXXxXx"
},
{
"input": "4\nxXXX",
"output": "1\nxxXX"
},
{
"input": "2\nXx",
"output": "0\nXx"
},
{
"input": "22\nXXxXXxxXxXxXXXX... | 1,490,719,970 | 2,147,483,647 | Python 3 | OK | TESTS | 32 | 62 | 4,608,000 | ham_count = int(input())
order = input()
final_order = order
small_count = 0
big_count = 0
for i in order:
if i == 'x':
small_count = small_count + 1
else:
big_count = big_count + 1
if small_count > big_count:
diff = int((small_count - big_count) / 2)
print(diff)
for i, index in ... | Title: Squats
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Pasha has many hamsters and he makes them work out. Today, *n* hamsters (*n* is even) came to work out. The hamsters lined up and each hamster either sat down or stood up.
For another exercise, Pasha needs exactly hamsters to ... | ```python
ham_count = int(input())
order = input()
final_order = order
small_count = 0
big_count = 0
for i in order:
if i == 'x':
small_count = small_count + 1
else:
big_count = big_count + 1
if small_count > big_count:
diff = int((small_count - big_count) / 2)
print(diff)
for i,... | 3 | MatrixStudio/Codeforces-Python-Submissions | |
385 | C | Bear and Prime Numbers | PROGRAMMING | 1,700 | [
"binary search",
"brute force",
"data structures",
"dp",
"implementation",
"math",
"number theory"
] | null | null | Recently, the bear started studying data structures and faced the following problem.
You are given a sequence of integers *x*1,<=*x*2,<=...,<=*x**n* of length *n* and *m* queries, each of them is characterized by two integers *l**i*,<=*r**i*. Let's introduce *f*(*p*) to represent the number of such indexes *k*, that *... | The first line contains integer *n* (1<=≤<=*n*<=≤<=106). The second line contains *n* integers *x*1,<=*x*2,<=...,<=*x**n* (2<=≤<=*x**i*<=≤<=107). The numbers are not necessarily distinct.
The third line contains integer *m* (1<=≤<=*m*<=≤<=50000). Each of the following *m* lines contains a pair of space-separated integ... | Print *m* integers — the answers to the queries on the order the queries appear in the input. | [
"6\n5 5 7 10 14 15\n3\n2 11\n3 12\n4 4\n",
"7\n2 3 5 7 11 4 8\n2\n8 10\n2 123\n"
] | [
"9\n7\n0\n",
"0\n7\n"
] | Consider the first sample. Overall, the first sample has 3 queries.
1. The first query *l* = 2, *r* = 11 comes. You need to count *f*(2) + *f*(3) + *f*(5) + *f*(7) + *f*(11) = 2 + 1 + 4 + 2 + 0 = 9. 1. The second query comes *l* = 3, *r* = 12. You need to count *f*(3) + *f*(5) + *f*(7) + *f*(11) = 1 + 4 + 2 + 0 = 7.... | 1,500 | [
{
"input": "6\n5 5 7 10 14 15\n3\n2 11\n3 12\n4 4",
"output": "9\n7\n0"
},
{
"input": "7\n2 3 5 7 11 4 8\n2\n8 10\n2 123",
"output": "0\n7"
},
{
"input": "9\n50 50 50 50 50 50 50 50 50\n7\n20 20\n8 13\n13 13\n6 14\n3 5\n15 17\n341 1792",
"output": "0\n0\n0\n0\n9\n0\n0"
},
{
"... | 1,622,530,434 | 2,147,483,647 | PyPy 3 | WRONG_ANSWER | TESTS | 18 | 1,856 | 180,326,400 | import sys
input=sys.stdin.readline
n=int(input())
x=list(map(int,input().split()))
prime=[]
c=[0]*(10**7+1)
for i in range(2,10**7+1):
if c[i]==0:
prime.append(i)
for j in range(i,10**7,i):
c[j]=i
pre=[0]*(10**7+1)
for i in range(n):
tmp=x[i]
dv=c[tmp]
pre[dv]+=1
while tmp and d... | Title: Bear and Prime Numbers
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Recently, the bear started studying data structures and faced the following problem.
You are given a sequence of integers *x*1,<=*x*2,<=...,<=*x**n* of length *n* and *m* queries, each of them is characterized b... | ```python
import sys
input=sys.stdin.readline
n=int(input())
x=list(map(int,input().split()))
prime=[]
c=[0]*(10**7+1)
for i in range(2,10**7+1):
if c[i]==0:
prime.append(i)
for j in range(i,10**7,i):
c[j]=i
pre=[0]*(10**7+1)
for i in range(n):
tmp=x[i]
dv=c[tmp]
pre[dv]+=1
while... | 0 | MatrixStudio/Codeforces-Python-Submissions | |
50 | A | Domino piling | PROGRAMMING | 800 | [
"greedy",
"math"
] | A. Domino piling | 2 | 256 | You are given a rectangular board of *M*<=×<=*N* squares. Also you are given an unlimited number of standard domino pieces of 2<=×<=1 squares. You are allowed to rotate the pieces. You are asked to place as many dominoes as possible on the board so as to meet the following conditions:
1. Each domino completely covers ... | In a single line you are given two integers *M* and *N* — board sizes in squares (1<=≤<=*M*<=≤<=*N*<=≤<=16). | Output one number — the maximal number of dominoes, which can be placed. | [
"2 4\n",
"3 3\n"
] | [
"4\n",
"4\n"
] | none | 500 | [
{
"input": "2 4",
"output": "4"
},
{
"input": "3 3",
"output": "4"
},
{
"input": "1 5",
"output": "2"
},
{
"input": "1 6",
"output": "3"
},
{
"input": "1 15",
"output": "7"
},
{
"input": "1 16",
"output": "8"
},
{
"input": "2 5",
"outpu... | 1,640,936,471 | 2,147,483,647 | Python 3 | OK | TESTS | 35 | 92 | 0 | m,n=map(int,input().split())
k=m*n
print(k//2)
| Title: Domino piling
Time Limit: 2 seconds
Memory Limit: 256 megabytes
Problem Description:
You are given a rectangular board of *M*<=×<=*N* squares. Also you are given an unlimited number of standard domino pieces of 2<=×<=1 squares. You are allowed to rotate the pieces. You are asked to place as many dominoes as p... | ```python
m,n=map(int,input().split())
k=m*n
print(k//2)
``` | 3.977 | MatrixStudio/Codeforces-Python-Submissions |
59 | A | Word | PROGRAMMING | 800 | [
"implementation",
"strings"
] | A. Word | 2 | 256 | Vasya is very upset that many people on the Net mix uppercase and lowercase letters in one word. That's why he decided to invent an extension for his favorite browser that would change the letters' register in every word so that it either only consisted of lowercase letters or, vice versa, only of uppercase ones. At th... | The first line contains a word *s* — it consists of uppercase and lowercase Latin letters and possesses the length from 1 to 100. | Print the corrected word *s*. If the given word *s* has strictly more uppercase letters, make the word written in the uppercase register, otherwise - in the lowercase one. | [
"HoUse\n",
"ViP\n",
"maTRIx\n"
] | [
"house\n",
"VIP\n",
"matrix\n"
] | none | 500 | [
{
"input": "HoUse",
"output": "house"
},
{
"input": "ViP",
"output": "VIP"
},
{
"input": "maTRIx",
"output": "matrix"
},
{
"input": "BNHWpnpawg",
"output": "bnhwpnpawg"
},
{
"input": "VTYGP",
"output": "VTYGP"
},
{
"input": "CHNenu",
"output": "chn... | 1,679,679,684 | 2,147,483,647 | Python 3 | OK | TESTS | 30 | 92 | 0 | alphabet="abcdefghijklmnopqrstuvwxyz"
s=input()
if sum([i in alphabet for i in s])<(len(s))/2:
print(s.upper())
else:
print(s.lower()) | Title: Word
Time Limit: 2 seconds
Memory Limit: 256 megabytes
Problem Description:
Vasya is very upset that many people on the Net mix uppercase and lowercase letters in one word. That's why he decided to invent an extension for his favorite browser that would change the letters' register in every word so that it ei... | ```python
alphabet="abcdefghijklmnopqrstuvwxyz"
s=input()
if sum([i in alphabet for i in s])<(len(s))/2:
print(s.upper())
else:
print(s.lower())
``` | 3.977 | MatrixStudio/Codeforces-Python-Submissions |
315 | A | Sereja and Bottles | PROGRAMMING | 1,400 | [
"brute force"
] | null | null | Sereja and his friends went to a picnic. The guys had *n* soda bottles just for it. Sereja forgot the bottle opener as usual, so the guys had to come up with another way to open bottles.
Sereja knows that the *i*-th bottle is from brand *a**i*, besides, you can use it to open other bottles of brand *b**i*. You can use... | The first line contains integer *n* (1<=≤<=*n*<=≤<=100) — the number of bottles. The next *n* lines contain the bottles' description. The *i*-th line contains two integers *a**i*,<=*b**i* (1<=≤<=*a**i*,<=*b**i*<=≤<=1000) — the description of the *i*-th bottle. | In a single line print a single integer — the answer to the problem. | [
"4\n1 1\n2 2\n3 3\n4 4\n",
"4\n1 2\n2 3\n3 4\n4 1\n"
] | [
"4\n",
"0\n"
] | none | 500 | [
{
"input": "4\n1 1\n2 2\n3 3\n4 4",
"output": "4"
},
{
"input": "4\n1 2\n2 3\n3 4\n4 1",
"output": "0"
},
{
"input": "3\n2 828\n4 392\n4 903",
"output": "3"
},
{
"input": "4\n2 3\n1 772\n3 870\n3 668",
"output": "2"
},
{
"input": "5\n1 4\n6 6\n4 3\n3 4\n4 758",
... | 1,652,190,864 | 2,147,483,647 | PyPy 3-64 | WRONG_ANSWER | TESTS | 2 | 60 | 0 | n = int(input())
a,b = [],[]
for i in range(n):
ael,bel = map(int,input().split())
a.append(ael)
b.append(bel)
dic = {}
dic2 = {}
for (x,y) in zip(a,b):
if x!=y :
dic[y] = True
if x not in dic2:
dic2[x] = 1
else:
dic2[x]+=1
count = 0
... | Title: Sereja and Bottles
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Sereja and his friends went to a picnic. The guys had *n* soda bottles just for it. Sereja forgot the bottle opener as usual, so the guys had to come up with another way to open bottles.
Sereja knows that the *i*-th... | ```python
n = int(input())
a,b = [],[]
for i in range(n):
ael,bel = map(int,input().split())
a.append(ael)
b.append(bel)
dic = {}
dic2 = {}
for (x,y) in zip(a,b):
if x!=y :
dic[y] = True
if x not in dic2:
dic2[x] = 1
else:
dic2[x]+=1
count =... | 0 | MatrixStudio/Codeforces-Python-Submissions | |
463 | B | Caisa and Pylons | PROGRAMMING | 1,100 | [
"brute force",
"implementation",
"math"
] | null | null | Caisa solved the problem with the sugar and now he is on the way back to home.
Caisa is playing a mobile game during his path. There are (*n*<=+<=1) pylons numbered from 0 to *n* in this game. The pylon with number 0 has zero height, the pylon with number *i* (*i*<=><=0) has height *h**i*. The goal of the game is ... | The first line contains integer *n* (1<=≤<=*n*<=≤<=105). The next line contains *n* integers *h*1, *h*2,<=..., *h**n* (1<=<=≤<=<=*h**i*<=<=≤<=<=105) representing the heights of the pylons. | Print a single number representing the minimum number of dollars paid by Caisa. | [
"5\n3 4 3 2 4\n",
"3\n4 4 4\n"
] | [
"4\n",
"4\n"
] | In the first sample he can pay 4 dollars and increase the height of pylon with number 0 by 4 units. Then he can safely pass to the last pylon. | 1,000 | [
{
"input": "5\n3 4 3 2 4",
"output": "4"
},
{
"input": "3\n4 4 4",
"output": "4"
},
{
"input": "99\n1401 2019 1748 3785 3236 3177 3443 3772 2138 1049 353 908 310 2388 1322 88 2160 2783 435 2248 1471 706 2468 2319 3156 3506 2794 1999 1983 2519 2597 3735 537 344 3519 3772 3872 2961 3895 20... | 1,690,390,788 | 2,147,483,647 | Python 3 | RUNTIME_ERROR | TESTS | 0 | 31 | 0 | for _ in range(int(input())):
l=list(map(int,input().split()))
ans=l[0]
for i in range(1,len(l)):
ans+=(l[i]-l[i-1])
if ans<=0: print(0)
else: print(0) | Title: Caisa and Pylons
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Caisa solved the problem with the sugar and now he is on the way back to home.
Caisa is playing a mobile game during his path. There are (*n*<=+<=1) pylons numbered from 0 to *n* in this game. The pylon with number 0... | ```python
for _ in range(int(input())):
l=list(map(int,input().split()))
ans=l[0]
for i in range(1,len(l)):
ans+=(l[i]-l[i-1])
if ans<=0: print(0)
else: print(0)
``` | -1 | MatrixStudio/Codeforces-Python-Submissions | |
218 | B | Airport | PROGRAMMING | 1,100 | [
"implementation"
] | null | null | Lolek and Bolek are about to travel abroad by plane. The local airport has a special "Choose Your Plane" offer. The offer's conditions are as follows:
- it is up to a passenger to choose a plane to fly on; - if the chosen plane has *x* (*x*<=><=0) empty seats at the given moment, then the ticket for such a plane ... | The first line contains two integers *n* and *m* (1<=≤<=*n*,<=*m*<=≤<=1000) — the number of passengers in the queue and the number of planes in the airport, correspondingly. The next line contains *m* integers *a*1,<=*a*2,<=...,<=*a**m* (1<=≤<=*a**i*<=≤<=1000) — *a**i* stands for the number of empty seats in the *i*-th... | Print two integers — the maximum and the minimum number of zlotys that the airport administration can earn, correspondingly. | [
"4 3\n2 1 1\n",
"4 3\n2 2 2\n"
] | [
"5 5\n",
"7 6\n"
] | In the first test sample the number of passengers is equal to the number of empty seats, so regardless of the way the planes are chosen, the administration will earn the same sum.
In the second sample the sum is maximized if the 1-st person in the queue buys a ticket to the 1-st plane, the 2-nd person — to the 2-nd pl... | 500 | [
{
"input": "4 3\n2 1 1",
"output": "5 5"
},
{
"input": "4 3\n2 2 2",
"output": "7 6"
},
{
"input": "10 5\n10 3 3 1 2",
"output": "58 26"
},
{
"input": "10 1\n10",
"output": "55 55"
},
{
"input": "10 1\n100",
"output": "955 955"
},
{
"input": "10 2\n4 7... | 1,603,393,175 | 2,147,483,647 | PyPy 3 | OK | TESTS | 33 | 280 | 0 | import sys
def maxT(n, tickets):
total = 0
for i in range(len(tickets) - 1, -1, -1):
if n == 0:
break
ele = tickets[i]
sold = min(n, ele)
n -= sold
total += i * sold
return total
def binFormula(k):
"""calculates from 1 to k"""
return ((k) * (k... | Title: Airport
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Lolek and Bolek are about to travel abroad by plane. The local airport has a special "Choose Your Plane" offer. The offer's conditions are as follows:
- it is up to a passenger to choose a plane to fly on; - if the chosen pl... | ```python
import sys
def maxT(n, tickets):
total = 0
for i in range(len(tickets) - 1, -1, -1):
if n == 0:
break
ele = tickets[i]
sold = min(n, ele)
n -= sold
total += i * sold
return total
def binFormula(k):
"""calculates from 1 to k"""
return... | 3 | MatrixStudio/Codeforces-Python-Submissions | |
620 | A | Professor GukiZ's Robot | PROGRAMMING | 800 | [
"implementation",
"math"
] | null | null | Professor GukiZ makes a new robot. The robot are in the point with coordinates (*x*1,<=*y*1) and should go to the point (*x*2,<=*y*2). In a single step the robot can change any of its coordinates (maybe both of them) by one (decrease or increase). So the robot can move in one of the 8 directions. Find the minimal numbe... | The first line contains two integers *x*1,<=*y*1 (<=-<=109<=≤<=*x*1,<=*y*1<=≤<=109) — the start position of the robot.
The second line contains two integers *x*2,<=*y*2 (<=-<=109<=≤<=*x*2,<=*y*2<=≤<=109) — the finish position of the robot. | Print the only integer *d* — the minimal number of steps to get the finish position. | [
"0 0\n4 5\n",
"3 4\n6 1\n"
] | [
"5\n",
"3\n"
] | In the first example robot should increase both of its coordinates by one four times, so it will be in position (4, 4). After that robot should simply increase its *y* coordinate and get the finish position.
In the second example robot should simultaneously increase *x* coordinate and decrease *y* coordinate by one th... | 0 | [
{
"input": "0 0\n4 5",
"output": "5"
},
{
"input": "3 4\n6 1",
"output": "3"
},
{
"input": "0 0\n4 6",
"output": "6"
},
{
"input": "1 1\n-3 -5",
"output": "6"
},
{
"input": "-1 -1\n-10 100",
"output": "101"
},
{
"input": "1 -1\n100 -100",
"output":... | 1,689,788,919 | 2,147,483,647 | PyPy 3 | RUNTIME_ERROR | TESTS | 72 | 92 | 2,150,400 | a, b = map(int, input().split())
x, y = map(int, input().split())
if x == y and a == b:
ans = abs(x - a)
elif y > x and a == b:
ans = abs(y - a)
elif x > y and a == b:
ans = abs(x - a)
elif a == b == x == y:
ans = 0
elif x == y and a > b:
ans = abs(x - b)
elif x == y and b > a:
an... | Title: Professor GukiZ's Robot
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Professor GukiZ makes a new robot. The robot are in the point with coordinates (*x*1,<=*y*1) and should go to the point (*x*2,<=*y*2). In a single step the robot can change any of its coordinates (maybe both of ... | ```python
a, b = map(int, input().split())
x, y = map(int, input().split())
if x == y and a == b:
ans = abs(x - a)
elif y > x and a == b:
ans = abs(y - a)
elif x > y and a == b:
ans = abs(x - a)
elif a == b == x == y:
ans = 0
elif x == y and a > b:
ans = abs(x - b)
elif x == y and b > ... | -1 | MatrixStudio/Codeforces-Python-Submissions | |
602 | A | Two Bases | PROGRAMMING | 1,100 | [
"brute force",
"implementation"
] | null | null | After seeing the "ALL YOUR BASE ARE BELONG TO US" meme for the first time, numbers *X* and *Y* realised that they have different bases, which complicated their relations.
You're given a number *X* represented in base *b**x* and a number *Y* represented in base *b**y*. Compare those two numbers. | The first line of the input contains two space-separated integers *n* and *b**x* (1<=≤<=*n*<=≤<=10, 2<=≤<=*b**x*<=≤<=40), where *n* is the number of digits in the *b**x*-based representation of *X*.
The second line contains *n* space-separated integers *x*1,<=*x*2,<=...,<=*x**n* (0<=≤<=*x**i*<=<<=*b**x*) — the dig... | Output a single character (quotes for clarity):
- '<' if *X*<=<<=*Y* - '>' if *X*<=><=*Y* - '=' if *X*<==<=*Y* | [
"6 2\n1 0 1 1 1 1\n2 10\n4 7\n",
"3 3\n1 0 2\n2 5\n2 4\n",
"7 16\n15 15 4 0 0 7 10\n7 9\n4 8 0 3 1 5 0\n"
] | [
"=\n",
"<\n",
">\n"
] | In the first sample, *X* = 101111<sub class="lower-index">2</sub> = 47<sub class="lower-index">10</sub> = *Y*.
In the second sample, *X* = 102<sub class="lower-index">3</sub> = 21<sub class="lower-index">5</sub> and *Y* = 24<sub class="lower-index">5</sub> = 112<sub class="lower-index">3</sub>, thus *X* < *Y*.
In ... | 500 | [
{
"input": "6 2\n1 0 1 1 1 1\n2 10\n4 7",
"output": "="
},
{
"input": "3 3\n1 0 2\n2 5\n2 4",
"output": "<"
},
{
"input": "7 16\n15 15 4 0 0 7 10\n7 9\n4 8 0 3 1 5 0",
"output": ">"
},
{
"input": "2 2\n1 0\n2 3\n1 0",
"output": "<"
},
{
"input": "2 2\n1 0\n1 3\n1"... | 1,680,732,610 | 2,147,483,647 | Python 3 | OK | TESTS | 118 | 46 | 0 |
n, bx = map(int, input().split())
x_bx = list(map(int, input().split())) # list of each digit of x in base bx
m, by = map(int, input().split())
y_by = list(map(int, input().split())) # list of each digit of y in base by
x_bx.reverse() # reverse to put x_bx[0] = lsb, x_bx[len - 1] = msb
x_10 = 0
for i, dig... | Title: Two Bases
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
After seeing the "ALL YOUR BASE ARE BELONG TO US" meme for the first time, numbers *X* and *Y* realised that they have different bases, which complicated their relations.
You're given a number *X* represented in base *b**x* ... | ```python
n, bx = map(int, input().split())
x_bx = list(map(int, input().split())) # list of each digit of x in base bx
m, by = map(int, input().split())
y_by = list(map(int, input().split())) # list of each digit of y in base by
x_bx.reverse() # reverse to put x_bx[0] = lsb, x_bx[len - 1] = msb
x_10 = 0
... | 3 | MatrixStudio/Codeforces-Python-Submissions | |
637 | A | Voting for Photos | PROGRAMMING | 1,000 | [
"*special",
"constructive algorithms",
"implementation"
] | null | null | After celebrating the midcourse the students of one of the faculties of the Berland State University decided to conduct a vote for the best photo. They published the photos in the social network and agreed on the rules to choose a winner: the photo which gets most likes wins. If multiple photoes get most likes, the win... | The first line of the input contains a single integer *n* (1<=≤<=*n*<=≤<=1000) — the total likes to the published photoes.
The second line contains *n* positive integers *a*1,<=*a*2,<=...,<=*a**n* (1<=≤<=*a**i*<=≤<=1<=000<=000), where *a**i* is the identifier of the photo which got the *i*-th like. | Print the identifier of the photo which won the elections. | [
"5\n1 3 2 2 1\n",
"9\n100 200 300 200 100 300 300 100 200\n"
] | [
"2\n",
"300\n"
] | In the first test sample the photo with id 1 got two likes (first and fifth), photo with id 2 got two likes (third and fourth), and photo with id 3 got one like (second).
Thus, the winner is the photo with identifier 2, as it got:
- more likes than the photo with id 3; - as many likes as the photo with id 1, but t... | 500 | [
{
"input": "5\n1 3 2 2 1",
"output": "2"
},
{
"input": "9\n100 200 300 200 100 300 300 100 200",
"output": "300"
},
{
"input": "1\n5",
"output": "5"
},
{
"input": "1\n1000000",
"output": "1000000"
},
{
"input": "5\n1 3 4 2 2",
"output": "2"
},
{
"input... | 1,458,564,237 | 2,147,483,647 | Python 3 | OK | TESTS | 65 | 77 | 9,113,600 | n = input()
arr, arr1, ptr = list(map(int,input().split())), [0] * 1000001, 0
for i in arr:
arr1[i] += 1
if arr1[ptr] < arr1[i]:
ptr = i
print(ptr) | Title: Voting for Photos
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
After celebrating the midcourse the students of one of the faculties of the Berland State University decided to conduct a vote for the best photo. They published the photos in the social network and agreed on the rule... | ```python
n = input()
arr, arr1, ptr = list(map(int,input().split())), [0] * 1000001, 0
for i in arr:
arr1[i] += 1
if arr1[ptr] < arr1[i]:
ptr = i
print(ptr)
``` | 3 | MatrixStudio/Codeforces-Python-Submissions | |
265 | A | Colorful Stones (Simplified Edition) | PROGRAMMING | 800 | [
"implementation"
] | null | null | There is a sequence of colorful stones. The color of each stone is one of red, green, or blue. You are given a string *s*. The *i*-th (1-based) character of *s* represents the color of the *i*-th stone. If the character is "R", "G", or "B", the color of the corresponding stone is red, green, or blue, respectively.
Ini... | The input contains two lines. The first line contains the string *s* (1<=≤<=|*s*|<=≤<=50). The second line contains the string *t* (1<=≤<=|*t*|<=≤<=50). The characters of each string will be one of "R", "G", or "B". It is guaranteed that Liss don't move out of the sequence. | Print the final 1-based position of Liss in a single line. | [
"RGB\nRRR\n",
"RRRBGBRBBB\nBBBRR\n",
"BRRBGBRGRBGRGRRGGBGBGBRGBRGRGGGRBRRRBRBBBGRRRGGBBB\nBBRBGGRGRGBBBRBGRBRBBBBRBRRRBGBBGBBRRBBGGRBRRBRGRB\n"
] | [
"2\n",
"3\n",
"15\n"
] | none | 500 | [
{
"input": "RGB\nRRR",
"output": "2"
},
{
"input": "RRRBGBRBBB\nBBBRR",
"output": "3"
},
{
"input": "BRRBGBRGRBGRGRRGGBGBGBRGBRGRGGGRBRRRBRBBBGRRRGGBBB\nBBRBGGRGRGBBBRBGRBRBBBBRBRRRBGBBGBBRRBBGGRBRRBRGRB",
"output": "15"
},
{
"input": "G\nRRBBRBRRBR",
"output": "1"
},
... | 1,615,335,654 | 2,147,483,647 | Python 3 | WRONG_ANSWER | TESTS | 4 | 124 | 0 | s = input()
t = input()
unique = []
for i in s:
if i in unique:
continue
else:
unique.append(i)
c = 0
iprev = t[0]
for i in range(1, len(t)):
if (t[i] == iprev) and (t[i] in unique) :
c += 1
iprev = t[i]
if c == 0:
c = len(unique)
print(c) | Title: Colorful Stones (Simplified Edition)
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
There is a sequence of colorful stones. The color of each stone is one of red, green, or blue. You are given a string *s*. The *i*-th (1-based) character of *s* represents the color of the *i*-th st... | ```python
s = input()
t = input()
unique = []
for i in s:
if i in unique:
continue
else:
unique.append(i)
c = 0
iprev = t[0]
for i in range(1, len(t)):
if (t[i] == iprev) and (t[i] in unique) :
c += 1
iprev = t[i]
if c == 0:
c = len(unique)
print(c)
``` | 0 | MatrixStudio/Codeforces-Python-Submissions | |
146 | A | Lucky Ticket | PROGRAMMING | 800 | [
"implementation"
] | null | null | Petya loves lucky numbers very much. Everybody knows that lucky numbers are positive integers whose decimal record contains only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not.
Petya loves tickets very much. As we know, each ticket has a number that is a positive integer. It... | The first line contains an even integer *n* (2<=≤<=*n*<=≤<=50) — the length of the ticket number that needs to be checked. The second line contains an integer whose length equals exactly *n* — the ticket number. The number may contain leading zeros. | On the first line print "YES" if the given ticket number is lucky. Otherwise, print "NO" (without the quotes). | [
"2\n47\n",
"4\n4738\n",
"4\n4774\n"
] | [
"NO\n",
"NO\n",
"YES\n"
] | In the first sample the sum of digits in the first half does not equal the sum of digits in the second half (4 ≠ 7).
In the second sample the ticket number is not the lucky number. | 500 | [
{
"input": "2\n47",
"output": "NO"
},
{
"input": "4\n4738",
"output": "NO"
},
{
"input": "4\n4774",
"output": "YES"
},
{
"input": "4\n4570",
"output": "NO"
},
{
"input": "6\n477477",
"output": "YES"
},
{
"input": "6\n777777",
"output": "YES"
},
... | 1,542,230,945 | 2,147,483,647 | Python 3 | OK | TESTS | 46 | 248 | 0 | n = int(input())
x = list(input())
if all([i == '4' or i == '7' for i in x]):
if sum([int(i) for i in x[:n//2]]) == sum([int(i) for i in x[n//2:]]):
print("YES")
else:
print("NO")
else:
print("NO") | Title: Lucky Ticket
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Petya loves lucky numbers very much. Everybody knows that lucky numbers are positive integers whose decimal record contains only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not.
... | ```python
n = int(input())
x = list(input())
if all([i == '4' or i == '7' for i in x]):
if sum([int(i) for i in x[:n//2]]) == sum([int(i) for i in x[n//2:]]):
print("YES")
else:
print("NO")
else:
print("NO")
``` | 3 | MatrixStudio/Codeforces-Python-Submissions | |
80 | A | Panoramix's Prediction | PROGRAMMING | 800 | [
"brute force"
] | A. Panoramix's Prediction | 2 | 256 | A prime number is a number which has exactly two distinct divisors: one and itself. For example, numbers 2, 7, 3 are prime, and 1, 6, 4 are not.
The next prime number after *x* is the smallest prime number greater than *x*. For example, the next prime number after 2 is 3, and the next prime number after 3 is 5. Note t... | The first and only input line contains two positive integers — *n* and *m* (2<=≤<=*n*<=<<=*m*<=≤<=50). It is guaranteed that *n* is prime.
Pretests contain all the cases with restrictions 2<=≤<=*n*<=<<=*m*<=≤<=4. | Print YES, if *m* is the next prime number after *n*, or NO otherwise. | [
"3 5\n",
"7 11\n",
"7 9\n"
] | [
"YES",
"YES",
"NO"
] | none | 500 | [
{
"input": "3 5",
"output": "YES"
},
{
"input": "7 11",
"output": "YES"
},
{
"input": "7 9",
"output": "NO"
},
{
"input": "2 3",
"output": "YES"
},
{
"input": "2 4",
"output": "NO"
},
{
"input": "3 4",
"output": "NO"
},
{
"input": "3 5",
... | 1,643,094,614 | 2,147,483,647 | Python 3 | OK | TESTS | 45 | 92 | 0 | a=list(map(int,input().split()))
for i in range(a[0]+1,2**31):
for j in range(2,(i//2)+1):
if i%j==0:
break
else:
b=i
break
if b==a[1]:
print("YES")
else:
print("NO")
| Title: Panoramix's Prediction
Time Limit: 2 seconds
Memory Limit: 256 megabytes
Problem Description:
A prime number is a number which has exactly two distinct divisors: one and itself. For example, numbers 2, 7, 3 are prime, and 1, 6, 4 are not.
The next prime number after *x* is the smallest prime number greater t... | ```python
a=list(map(int,input().split()))
for i in range(a[0]+1,2**31):
for j in range(2,(i//2)+1):
if i%j==0:
break
else:
b=i
break
if b==a[1]:
print("YES")
else:
print("NO")
``` | 3.977 | MatrixStudio/Codeforces-Python-Submissions |
48 | A | Rock-paper-scissors | PROGRAMMING | 900 | [
"implementation",
"schedules"
] | A. Rock-paper-scissors | 2 | 256 | Uncle Fyodor, Matroskin the Cat and Sharic the Dog live their simple but happy lives in Prostokvashino. Sometimes they receive parcels from Uncle Fyodor’s parents and sometimes from anonymous benefactors, in which case it is hard to determine to which one of them the package has been sent. A photographic rifle is obvio... | The first input line contains the name of the gesture that Uncle Fyodor showed, the second line shows which gesture Matroskin showed and the third line shows Sharic’s gesture. | Print "F" (without quotes) if Uncle Fyodor wins. Print "M" if Matroskin wins and "S" if Sharic wins. If it is impossible to find the winner, print "?". | [
"rock\nrock\nrock\n",
"paper\nrock\nrock\n",
"scissors\nrock\nrock\n",
"scissors\npaper\nrock\n"
] | [
"?\n",
"F\n",
"?\n",
"?\n"
] | none | 0 | [
{
"input": "rock\nrock\nrock",
"output": "?"
},
{
"input": "paper\nrock\nrock",
"output": "F"
},
{
"input": "scissors\nrock\nrock",
"output": "?"
},
{
"input": "scissors\npaper\nrock",
"output": "?"
},
{
"input": "paper\npaper\nrock",
"output": "?"
},
{
... | 1,631,870,186 | 2,147,483,647 | Python 3 | OK | TESTS | 27 | 154 | 6,963,200 | rules={"rock":1,"paper":2,"scissors":3}
def main(rules):
f=input()
m=input()
sh=input()
f=rules[f]
m=rules[m]
sh=rules[sh]
if f==m or m==sh or f==sh:
if f==m:
lose=f
if (sh>lose and (sh!=3 or lose!=1)) or (sh==1 and lose==3):
re... | Title: Rock-paper-scissors
Time Limit: 2 seconds
Memory Limit: 256 megabytes
Problem Description:
Uncle Fyodor, Matroskin the Cat and Sharic the Dog live their simple but happy lives in Prostokvashino. Sometimes they receive parcels from Uncle Fyodor’s parents and sometimes from anonymous benefactors, in which case ... | ```python
rules={"rock":1,"paper":2,"scissors":3}
def main(rules):
f=input()
m=input()
sh=input()
f=rules[f]
m=rules[m]
sh=rules[sh]
if f==m or m==sh or f==sh:
if f==m:
lose=f
if (sh>lose and (sh!=3 or lose!=1)) or (sh==1 and lose==3):
... | 3.94853 | MatrixStudio/Codeforces-Python-Submissions |
705 | A | Hulk | PROGRAMMING | 800 | [
"implementation"
] | null | null | Dr. Bruce Banner hates his enemies (like others don't). As we all know, he can barely talk when he turns into the incredible Hulk. That's why he asked you to help him to express his feelings.
Hulk likes the Inception so much, and like that his feelings are complicated. They have *n* layers. The first layer is hate, se... | The only line of the input contains a single integer *n* (1<=≤<=*n*<=≤<=100) — the number of layers of love and hate. | Print Dr.Banner's feeling in one line. | [
"1\n",
"2\n",
"3\n"
] | [
"I hate it\n",
"I hate that I love it\n",
"I hate that I love that I hate it\n"
] | none | 500 | [
{
"input": "1",
"output": "I hate it"
},
{
"input": "2",
"output": "I hate that I love it"
},
{
"input": "3",
"output": "I hate that I love that I hate it"
},
{
"input": "4",
"output": "I hate that I love that I hate that I love it"
},
{
"input": "5",
"output"... | 1,695,933,174 | 2,147,483,647 | Python 3 | OK | TESTS | 21 | 46 | 0 | n=int(input())
w1="that"
w2="it"
for i in range(n):
if(n==1):
print("I hate it",end=" ")
break
if(i==n-1):
if(n%2==0):
print("I love it",end=" ")
break
else:
print("I hate it",end=" ")
break
if(i%2==0):
pr... | Title: Hulk
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Dr. Bruce Banner hates his enemies (like others don't). As we all know, he can barely talk when he turns into the incredible Hulk. That's why he asked you to help him to express his feelings.
Hulk likes the Inception so much, and... | ```python
n=int(input())
w1="that"
w2="it"
for i in range(n):
if(n==1):
print("I hate it",end=" ")
break
if(i==n-1):
if(n%2==0):
print("I love it",end=" ")
break
else:
print("I hate it",end=" ")
break
if(i%2==0):
... | 3 | MatrixStudio/Codeforces-Python-Submissions | |
228 | A | Is your horseshoe on the other hoof? | PROGRAMMING | 800 | [
"implementation"
] | null | null | Valera the Horse is going to the party with friends. He has been following the fashion trends for a while, and he knows that it is very popular to wear all horseshoes of different color. Valera has got four horseshoes left from the last year, but maybe some of them have the same color. In this case he needs to go to th... | The first line contains four space-separated integers *s*1,<=*s*2,<=*s*3,<=*s*4 (1<=≤<=*s*1,<=*s*2,<=*s*3,<=*s*4<=≤<=109) — the colors of horseshoes Valera has.
Consider all possible colors indexed with integers. | Print a single integer — the minimum number of horseshoes Valera needs to buy. | [
"1 7 3 3\n",
"7 7 7 7\n"
] | [
"1\n",
"3\n"
] | none | 500 | [
{
"input": "1 7 3 3",
"output": "1"
},
{
"input": "7 7 7 7",
"output": "3"
},
{
"input": "81170865 673572653 756938629 995577259",
"output": "0"
},
{
"input": "3491663 217797045 522540872 715355328",
"output": "0"
},
{
"input": "251590420 586975278 916631563 58697... | 1,685,466,479 | 2,147,483,647 | Python 3 | OK | TESTS | 34 | 92 | 0 | a = list(map(int,input().strip().split()))
s = set(a)
print(len(a) - len(s)) | Title: Is your horseshoe on the other hoof?
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Valera the Horse is going to the party with friends. He has been following the fashion trends for a while, and he knows that it is very popular to wear all horseshoes of different color. Valera has ... | ```python
a = list(map(int,input().strip().split()))
s = set(a)
print(len(a) - len(s))
``` | 3 | MatrixStudio/Codeforces-Python-Submissions | |
462 | A | Appleman and Easy Task | PROGRAMMING | 1,000 | [
"brute force",
"implementation"
] | null | null | Toastman came up with a very easy task. He gives it to Appleman, but Appleman doesn't know how to solve it. Can you help him?
Given a *n*<=×<=*n* checkerboard. Each cell of the board has either character 'x', or character 'o'. Is it true that each cell of the board has even number of adjacent cells with 'o'? Two cells... | The first line contains an integer *n* (1<=≤<=*n*<=≤<=100). Then *n* lines follow containing the description of the checkerboard. Each of them contains *n* characters (either 'x' or 'o') without spaces. | Print "YES" or "NO" (without the quotes) depending on the answer to the problem. | [
"3\nxxo\nxox\noxx\n",
"4\nxxxo\nxoxo\noxox\nxxxx\n"
] | [
"YES\n",
"NO\n"
] | none | 500 | [
{
"input": "3\nxxo\nxox\noxx",
"output": "YES"
},
{
"input": "4\nxxxo\nxoxo\noxox\nxxxx",
"output": "NO"
},
{
"input": "1\no",
"output": "YES"
},
{
"input": "2\nox\nxo",
"output": "YES"
},
{
"input": "2\nxx\nxo",
"output": "NO"
},
{
"input": "3\nooo\no... | 1,635,849,754 | 2,147,483,647 | Python 3 | OK | TESTS | 32 | 62 | 4,300,800 | n = int(input())
k = ""
for i in range(n):
k += input()
if list(k)==list(reversed(k)):
print("YES")
else:
print("NO")
| Title: Appleman and Easy Task
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Toastman came up with a very easy task. He gives it to Appleman, but Appleman doesn't know how to solve it. Can you help him?
Given a *n*<=×<=*n* checkerboard. Each cell of the board has either character 'x', or... | ```python
n = int(input())
k = ""
for i in range(n):
k += input()
if list(k)==list(reversed(k)):
print("YES")
else:
print("NO")
``` | 3 | MatrixStudio/Codeforces-Python-Submissions | |
799 | B | T-shirt buying | PROGRAMMING | 1,400 | [
"data structures",
"implementation"
] | null | null | A new pack of *n* t-shirts came to a shop. Each of the t-shirts is characterized by three integers *p**i*, *a**i* and *b**i*, where *p**i* is the price of the *i*-th t-shirt, *a**i* is front color of the *i*-th t-shirt and *b**i* is back color of the *i*-th t-shirt. All values *p**i* are distinct, and values *a**i* and... | The first line contains single integer *n* (1<=≤<=*n*<=≤<=200<=000) — the number of t-shirts.
The following line contains sequence of integers *p*1,<=*p*2,<=...,<=*p**n* (1<=≤<=*p**i*<=≤<=1<=000<=000<=000), where *p**i* equals to the price of the *i*-th t-shirt.
The following line contains sequence of integers *a*1,<... | Print to the first line *m* integers — the *j*-th integer should be equal to the price of the t-shirt which the *j*-th buyer will buy. If the *j*-th buyer won't buy anything, print -1. | [
"5\n300 200 400 500 911\n1 2 1 2 3\n2 1 3 2 1\n6\n2 3 1 2 1 1\n",
"2\n1000000000 1\n1 1\n1 2\n2\n2 1\n"
] | [
"200 400 300 500 911 -1 \n",
"1 1000000000 \n"
] | none | 1,000 | [
{
"input": "5\n300 200 400 500 911\n1 2 1 2 3\n2 1 3 2 1\n6\n2 3 1 2 1 1",
"output": "200 400 300 500 911 -1 "
},
{
"input": "2\n1000000000 1\n1 1\n1 2\n2\n2 1",
"output": "1 1000000000 "
},
{
"input": "10\n251034796 163562337 995167403 531046374 341924810 828969071 971837553 183763940 8... | 1,648,468,122 | 2,147,483,647 | PyPy 3-64 | WRONG_ANSWER | TESTS | 3 | 46 | 512,000 | #──────▄▀▄─────▄▀▄
#─────▄█░░▀▀▀▀▀░░█▄
#─▄▄──█░░░░░░░░░░░█──▄▄
#█▄▄█─█░░▀░░┬░░▀░░█─█▄▄█
n = int(input())
u = []
for i in range(n):
u.append([])
l = list(map(int,input().split()))
c1 = list(map(int,input().split()))
c2 = list(map(int,input().split()))
for i in range(n):
u[i].append(l[i])
u[i].ap... | Title: T-shirt buying
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
A new pack of *n* t-shirts came to a shop. Each of the t-shirts is characterized by three integers *p**i*, *a**i* and *b**i*, where *p**i* is the price of the *i*-th t-shirt, *a**i* is front color of the *i*-th t-shirt a... | ```python
#──────▄▀▄─────▄▀▄
#─────▄█░░▀▀▀▀▀░░█▄
#─▄▄──█░░░░░░░░░░░█──▄▄
#█▄▄█─█░░▀░░┬░░▀░░█─█▄▄█
n = int(input())
u = []
for i in range(n):
u.append([])
l = list(map(int,input().split()))
c1 = list(map(int,input().split()))
c2 = list(map(int,input().split()))
for i in range(n):
u[i].append(l[i])
... | 0 | MatrixStudio/Codeforces-Python-Submissions | |
938 | A | Word Correction | PROGRAMMING | 800 | [
"implementation"
] | null | null | Victor tries to write his own text editor, with word correction included. However, the rules of word correction are really strange.
Victor thinks that if a word contains two consecutive vowels, then it's kinda weird and it needs to be replaced. So the word corrector works in such a way: as long as there are two consec... | The first line contains one integer *n* (1<=≤<=*n*<=≤<=100) — the number of letters in word *s* before the correction.
The second line contains a string *s* consisting of exactly *n* lowercase Latin letters — the word before the correction. | Output the word *s* after the correction. | [
"5\nweird\n",
"4\nword\n",
"5\naaeaa\n"
] | [
"werd\n",
"word\n",
"a\n"
] | Explanations of the examples:
1. There is only one replace: weird <img align="middle" class="tex-formula" src="https://espresso.codeforces.com/70a0795f45d32287dba0eb83fc4a3f470c6e5537.png" style="max-width: 100.0%;max-height: 100.0%;"/> werd;1. No replace needed since there are no two consecutive vowels;1. aaeaa <i... | 0 | [
{
"input": "5\nweird",
"output": "werd"
},
{
"input": "4\nword",
"output": "word"
},
{
"input": "5\naaeaa",
"output": "a"
},
{
"input": "100\naaaaabbbbboyoyoyoyoyacadabbbbbiuiufgiuiuaahjabbbklboyoyoyoyoyaaaaabbbbbiuiuiuiuiuaaaaabbbbbeyiyuyzyw",
"output": "abbbbbocadabbbbb... | 1,519,753,643 | 2,147,483,647 | Python 3 | WRONG_ANSWER | TESTS | 3 | 77 | 5,632,000 | n=int(input())
a=list(input())
x=['a','e','i','o','u']
b=[]
i=0
while i<n:
if a[i] not in (x):
b.append(a[i])
#print(a)
i+=1
else:
b.append(a[i])
for j in range(i,n):
if a[j] in (x):
i+=1
else:
break... | Title: Word Correction
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Victor tries to write his own text editor, with word correction included. However, the rules of word correction are really strange.
Victor thinks that if a word contains two consecutive vowels, then it's kinda weird an... | ```python
n=int(input())
a=list(input())
x=['a','e','i','o','u']
b=[]
i=0
while i<n:
if a[i] not in (x):
b.append(a[i])
#print(a)
i+=1
else:
b.append(a[i])
for j in range(i,n):
if a[j] in (x):
i+=1
else:
... | 0 | MatrixStudio/Codeforces-Python-Submissions | |
202 | A | LLPS | PROGRAMMING | 800 | [
"binary search",
"bitmasks",
"brute force",
"greedy",
"implementation",
"strings"
] | null | null | This problem's actual name, "Lexicographically Largest Palindromic Subsequence" is too long to fit into the page headline.
You are given string *s* consisting of lowercase English letters only. Find its lexicographically largest palindromic subsequence.
We'll call a non-empty string *s*[*p*1*p*2... *p**k*] = *s**p*1*... | The only input line contains a non-empty string *s* consisting of lowercase English letters only. Its length does not exceed 10. | Print the lexicographically largest palindromic subsequence of string *s*. | [
"radar\n",
"bowwowwow\n",
"codeforces\n",
"mississipp\n"
] | [
"rr\n",
"wwwww\n",
"s\n",
"ssss\n"
] | Among all distinct subsequences of string "radar" the following ones are palindromes: "a", "d", "r", "aa", "rr", "ada", "rar", "rdr", "raar" and "radar". The lexicographically largest of them is "rr". | 500 | [
{
"input": "radar",
"output": "rr"
},
{
"input": "bowwowwow",
"output": "wwwww"
},
{
"input": "codeforces",
"output": "s"
},
{
"input": "mississipp",
"output": "ssss"
},
{
"input": "tourist",
"output": "u"
},
{
"input": "romka",
"output": "r"
},
... | 1,627,524,915 | 2,147,483,647 | PyPy 3 | OK | TESTS | 54 | 218 | 21,913,600 | import sys
input = sys.stdin.readline
s = input().rstrip()
len_s = len(s)
max_ = ''
for mask in range(1<<len_s):
subseq = ''
for i in range(len_s):
if mask>>i&1:
subseq += s[i]
if subseq == subseq[::-1] and subseq > max_:
max_ = subseq
print(max_)
| Title: LLPS
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
This problem's actual name, "Lexicographically Largest Palindromic Subsequence" is too long to fit into the page headline.
You are given string *s* consisting of lowercase English letters only. Find its lexicographically largest ... | ```python
import sys
input = sys.stdin.readline
s = input().rstrip()
len_s = len(s)
max_ = ''
for mask in range(1<<len_s):
subseq = ''
for i in range(len_s):
if mask>>i&1:
subseq += s[i]
if subseq == subseq[::-1] and subseq > max_:
max_ = subseq
print(max_)
``` | 3 | MatrixStudio/Codeforces-Python-Submissions | |
870 | C | Maximum splitting | PROGRAMMING | 1,300 | [
"dp",
"greedy",
"math",
"number theory"
] | null | null | You are given several queries. In the *i*-th query you are given a single positive integer *n**i*. You are to represent *n**i* as a sum of maximum possible number of composite summands and print this maximum number, or print -1, if there are no such splittings.
An integer greater than 1 is composite, if it is not prim... | The first line contains single integer *q* (1<=≤<=*q*<=≤<=105) — the number of queries.
*q* lines follow. The (*i*<=+<=1)-th line contains single integer *n**i* (1<=≤<=*n**i*<=≤<=109) — the *i*-th query. | For each query print the maximum possible number of summands in a valid splitting to composite summands, or -1, if there are no such splittings. | [
"1\n12\n",
"2\n6\n8\n",
"3\n1\n2\n3\n"
] | [
"3\n",
"1\n2\n",
"-1\n-1\n-1\n"
] | 12 = 4 + 4 + 4 = 4 + 8 = 6 + 6 = 12, but the first splitting has the maximum possible number of summands.
8 = 4 + 4, 6 can't be split into several composite summands.
1, 2, 3 are less than any composite number, so they do not have valid splittings. | 1,500 | [
{
"input": "1\n12",
"output": "3"
},
{
"input": "2\n6\n8",
"output": "1\n2"
},
{
"input": "3\n1\n2\n3",
"output": "-1\n-1\n-1"
},
{
"input": "6\n1\n2\n3\n5\n7\n11",
"output": "-1\n-1\n-1\n-1\n-1\n-1"
},
{
"input": "3\n4\n6\n9",
"output": "1\n1\n1"
},
{
... | 1,650,481,081 | 2,147,483,647 | Python 3 | WRONG_ANSWER | TESTS | 3 | 30 | 0 | import math
Test_case = int(input())
# Test_case = 1
for test in range(Test_case):
n = int(input())
if n < 4:
print(-1)
else:
if n < 8:
print(1)
else:
ans = -1
if n % 4 == 0:
ans = max(ans, n // 4)
if n % 6 == 0:
... | Title: Maximum splitting
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
You are given several queries. In the *i*-th query you are given a single positive integer *n**i*. You are to represent *n**i* as a sum of maximum possible number of composite summands and print this maximum number, o... | ```python
import math
Test_case = int(input())
# Test_case = 1
for test in range(Test_case):
n = int(input())
if n < 4:
print(-1)
else:
if n < 8:
print(1)
else:
ans = -1
if n % 4 == 0:
ans = max(ans, n // 4)
if n % 6 ==... | 0 | MatrixStudio/Codeforces-Python-Submissions | |
551 | A | GukiZ and Contest | PROGRAMMING | 800 | [
"brute force",
"implementation",
"sortings"
] | null | null | Professor GukiZ likes programming contests. He especially likes to rate his students on the contests he prepares. Now, he has decided to prepare a new contest.
In total, *n* students will attend, and before the start, every one of them has some positive integer rating. Students are indexed from 1 to *n*. Let's denote... | The first line contains integer *n* (1<=≤<=*n*<=≤<=2000), number of GukiZ's students.
The second line contains *n* numbers *a*1,<=*a*2,<=... *a**n* (1<=≤<=*a**i*<=≤<=2000) where *a**i* is the rating of *i*-th student (1<=≤<=*i*<=≤<=*n*). | In a single line, print the position after the end of the contest for each of *n* students in the same order as they appear in the input. | [
"3\n1 3 3\n",
"1\n1\n",
"5\n3 5 3 4 5\n"
] | [
"3 1 1\n",
"1\n",
"4 1 4 3 1\n"
] | In the first sample, students 2 and 3 are positioned first (there is no other student with higher rating), and student 1 is positioned third since there are two students with higher rating.
In the second sample, first student is the only one on the contest.
In the third sample, students 2 and 5 share the first positi... | 500 | [
{
"input": "3\n1 3 3",
"output": "3 1 1"
},
{
"input": "1\n1",
"output": "1"
},
{
"input": "5\n3 5 3 4 5",
"output": "4 1 4 3 1"
},
{
"input": "7\n1 3 5 4 2 2 1",
"output": "6 3 1 2 4 4 6"
},
{
"input": "11\n5 6 4 2 9 7 6 6 6 6 7",
"output": "9 4 10 11 1 2 4 4... | 1,646,421,294 | 2,147,483,647 | Python 3 | WRONG_ANSWER | TESTS | 5 | 31 | 0 | n = int(input())
l = [i for i in input().split()]
sorted_l = sorted(l,reverse=True)
for i in range(n) :
print(sorted_l.index(l[i])+1, end=" ") | Title: GukiZ and Contest
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Professor GukiZ likes programming contests. He especially likes to rate his students on the contests he prepares. Now, he has decided to prepare a new contest.
In total, *n* students will attend, and before the star... | ```python
n = int(input())
l = [i for i in input().split()]
sorted_l = sorted(l,reverse=True)
for i in range(n) :
print(sorted_l.index(l[i])+1, end=" ")
``` | 0 | MatrixStudio/Codeforces-Python-Submissions | |
926 | H | Endless Roses Most Beautiful | PROGRAMMING | 2,200 | [] | null | null | Arkady decided to buy roses for his girlfriend.
A flower shop has white, orange and red roses, and the total amount of them is *n*. Arkady thinks that red roses are not good together with white roses, so he won't buy a bouquet containing both red and white roses. Also, Arkady won't buy a bouquet where all roses have t... | The first line contains two integers *n* and *k* (1<=≤<=*k*<=≤<=*n*<=≤<=200<=000) — the number of roses in the show and the number of roses Arkady wants to buy.
The second line contains a sequence of integers *b*1,<=*b*2,<=...,<=*b**n* (1<=≤<=*b**i*<=≤<=10<=000), where *b**i* equals the beauty of the *i*-th rose.
The... | Print the maximum possible total beauty of a bouquet of *k* roses that satisfies the constraints above. If it is not possible to make a single such bouquet, print -1. | [
"5 3\n4 3 4 1 6\nRROWW\n",
"5 2\n10 20 14 20 11\nRRRRR\n",
"11 5\n5 6 3 2 3 4 7 5 4 5 6\nRWOORWORROW\n"
] | [
"11\n",
"-1\n",
"28\n"
] | In the first example Arkady wants to buy 3 roses. He can, for example, buy both red roses (their indices are 1 and 2, and their total beauty is 7) and the only orange rose (its index is 3, its beauty is 4). This way the total beauty of the bouquet is 11.
In the second example Arkady can not buy a bouquet because all ... | 0 | [
{
"input": "5 3\n4 3 4 1 6\nRROWW",
"output": "11"
},
{
"input": "5 2\n10 20 14 20 11\nRRRRR",
"output": "-1"
},
{
"input": "11 5\n5 6 3 2 3 4 7 5 4 5 6\nRWOORWORROW",
"output": "28"
},
{
"input": "15 10\n8560 6244 9607 5137 7187 3217 5527 9919 282 8748 3529 6110 5767 521 339... | 1,521,304,423 | 3,523 | Python 3 | WRONG_ANSWER | TESTS | 5 | 93 | 7,065,600 | n, k = map(int, input().split())
g = input().split()
s = input()
a = []
for i in range(n):
a.append([int(g[i]), s[i]])
a.sort(reverse=True)
cnt = 0
l = -1
sum1 = 0
o = []
while cnt < k:
l += 1
if l == n:
sum1 = -1
break
if a[l][1] == 'R':
continue
else:
... | Title: Endless Roses Most Beautiful
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Arkady decided to buy roses for his girlfriend.
A flower shop has white, orange and red roses, and the total amount of them is *n*. Arkady thinks that red roses are not good together with white roses, so h... | ```python
n, k = map(int, input().split())
g = input().split()
s = input()
a = []
for i in range(n):
a.append([int(g[i]), s[i]])
a.sort(reverse=True)
cnt = 0
l = -1
sum1 = 0
o = []
while cnt < k:
l += 1
if l == n:
sum1 = -1
break
if a[l][1] == 'R':
continue
... | 0 | MatrixStudio/Codeforces-Python-Submissions | |
660 | A | Co-prime Array | PROGRAMMING | 1,200 | [
"greedy",
"implementation",
"math",
"number theory"
] | null | null | You are given an array of *n* elements, you must make it a co-prime array in as few moves as possible.
In each move you can insert any positive integral number you want not greater than 109 in any place in the array.
An array is co-prime if any two adjacent numbers of it are co-prime.
In the number theory, two integ... | The first line contains integer *n* (1<=≤<=*n*<=≤<=1000) — the number of elements in the given array.
The second line contains *n* integers *a**i* (1<=≤<=*a**i*<=≤<=109) — the elements of the array *a*. | Print integer *k* on the first line — the least number of elements needed to add to the array *a* to make it co-prime.
The second line should contain *n*<=+<=*k* integers *a**j* — the elements of the array *a* after adding *k* elements to it. Note that the new array should be co-prime, so any two adjacent values shoul... | [
"3\n2 7 28\n"
] | [
"1\n2 7 9 28\n"
] | none | 0 | [
{
"input": "3\n2 7 28",
"output": "1\n2 7 1 28"
},
{
"input": "1\n1",
"output": "0\n1"
},
{
"input": "1\n548",
"output": "0\n548"
},
{
"input": "1\n963837006",
"output": "0\n963837006"
},
{
"input": "10\n1 1 1 1 1 1 1 1 1 1",
"output": "0\n1 1 1 1 1 1 1 1 1 1"... | 1,615,002,491 | 2,147,483,647 | Python 3 | WRONG_ANSWER | TESTS | 0 | 46 | 0 | import math as m
n = int(input())
l = list(map(int,input().split()))
i = 0
j = 1
while True:
if m.gcd(l[i],l[j]) == 1:
i += 1
j += 1
else:
l.insert(j,1)
i += 2
j += 2
if j > len(l) - 1:
break
for k in l:
print(k,end = ' ')
... | Title: Co-prime Array
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
You are given an array of *n* elements, you must make it a co-prime array in as few moves as possible.
In each move you can insert any positive integral number you want not greater than 109 in any place in the array.
A... | ```python
import math as m
n = int(input())
l = list(map(int,input().split()))
i = 0
j = 1
while True:
if m.gcd(l[i],l[j]) == 1:
i += 1
j += 1
else:
l.insert(j,1)
i += 2
j += 2
if j > len(l) - 1:
break
for k in l:
print(k,end = ' ')
... | 0 | MatrixStudio/Codeforces-Python-Submissions | |
272 | A | Dima and Friends | PROGRAMMING | 1,000 | [
"implementation",
"math"
] | null | null | Dima and his friends have been playing hide and seek at Dima's place all night. As a result, Dima's place got messy. In the morning they decided that they need to clean the place.
To decide who exactly would clean the apartment, the friends want to play a counting-out game. First, all the guys stand in a circle, and t... | The first line contains integer *n* (1<=≤<=*n*<=≤<=100) — the number of Dima's friends. Dima himself isn't considered to be his own friend. The second line contains *n* positive integers, not exceeding 5, representing, how many fingers the Dima's friends will show.
The numbers in the lines are separated by a single s... | In a single line print the answer to the problem. | [
"1\n1\n",
"1\n2\n",
"2\n3 5\n"
] | [
"3\n",
"2\n",
"3\n"
] | In the first sample Dima can show 1, 3 or 5 fingers. If Dima shows 3 fingers, then the counting-out will go like that: Dima, his friend, Dima, his friend.
In the second sample Dima can show 2 or 4 fingers. | 500 | [
{
"input": "1\n1",
"output": "3"
},
{
"input": "1\n2",
"output": "2"
},
{
"input": "2\n3 5",
"output": "3"
},
{
"input": "2\n3 5",
"output": "3"
},
{
"input": "1\n5",
"output": "3"
},
{
"input": "5\n4 4 3 5 1",
"output": "4"
},
{
"input": "... | 1,590,771,531 | 2,147,483,647 | PyPy 3 | WRONG_ANSWER | TESTS | 4 | 280 | 0 | n = int(input()) + 1
f = list(map(int, input().split()))
arr = [1 + n*i for i in range(n*2)]
a = []
for i in range(1,6):
if( i + sum(f) not in arr):
a.append(i)
print(len(a)) | Title: Dima and Friends
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Dima and his friends have been playing hide and seek at Dima's place all night. As a result, Dima's place got messy. In the morning they decided that they need to clean the place.
To decide who exactly would clean the... | ```python
n = int(input()) + 1
f = list(map(int, input().split()))
arr = [1 + n*i for i in range(n*2)]
a = []
for i in range(1,6):
if( i + sum(f) not in arr):
a.append(i)
print(len(a))
``` | 0 | MatrixStudio/Codeforces-Python-Submissions | |
917 | B | MADMAX | PROGRAMMING | 1,700 | [
"dfs and similar",
"dp",
"games",
"graphs"
] | null | null | As we all know, Max is the best video game player among her friends. Her friends were so jealous of hers, that they created an actual game just to prove that she's not the best at games. The game is played on a directed acyclic graph (a DAG) with *n* vertices and *m* edges. There's a character written on each edge, a l... | The first line of input contains two integers *n* and *m* (2<=≤<=*n*<=≤<=100, ).
The next *m* lines contain the edges. Each line contains two integers *v*, *u* and a lowercase English letter *c*, meaning there's an edge from *v* to *u* written *c* on it (1<=≤<=*v*,<=*u*<=≤<=*n*, *v*<=≠<=*u*). There's at most one edge ... | Print *n* lines, a string of length *n* in each one. The *j*-th character in *i*-th line should be 'A' if Max will win the game in case her marble is initially at vertex *i* and Lucas's marble is initially at vertex *j*, and 'B' otherwise. | [
"4 4\n1 2 b\n1 3 a\n2 4 c\n3 4 b\n",
"5 8\n5 3 h\n1 2 c\n3 1 c\n3 2 r\n5 1 r\n4 3 z\n5 4 r\n5 2 h\n"
] | [
"BAAA\nABAA\nBBBA\nBBBB\n",
"BABBB\nBBBBB\nAABBB\nAAABA\nAAAAB\n"
] | Here's the graph in the first sample test case:
Here's the graph in the second sample test case: | 750 | [
{
"input": "4 4\n1 2 b\n1 3 a\n2 4 c\n3 4 b",
"output": "BAAA\nABAA\nBBBA\nBBBB"
},
{
"input": "5 8\n5 3 h\n1 2 c\n3 1 c\n3 2 r\n5 1 r\n4 3 z\n5 4 r\n5 2 h",
"output": "BABBB\nBBBBB\nAABBB\nAAABA\nAAAAB"
},
{
"input": "2 1\n1 2 q",
"output": "BA\nBB"
},
{
"input": "8 20\n2 4 ... | 1,689,696,717 | 2,147,483,647 | PyPy 3-64 | OK | TESTS | 67 | 234 | 10,649,600 | #https://codeforces.com/problemset/problem/917/B
def who_wins(i, j, score):
global win
if win[i][j] == None:
w_max = ''
for e in v[i]:
if e[1] > w_max and not who_wins(j, e[0], e[1]):
w_max = e[1]
win[i][j] = w_max
return win[i][j] >= score
def who_wins... | Title: MADMAX
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
As we all know, Max is the best video game player among her friends. Her friends were so jealous of hers, that they created an actual game just to prove that she's not the best at games. The game is played on a directed acyclic ... | ```python
#https://codeforces.com/problemset/problem/917/B
def who_wins(i, j, score):
global win
if win[i][j] == None:
w_max = ''
for e in v[i]:
if e[1] > w_max and not who_wins(j, e[0], e[1]):
w_max = e[1]
win[i][j] = w_max
return win[i][j] >= score
de... | 3 | MatrixStudio/Codeforces-Python-Submissions | |
80 | A | Panoramix's Prediction | PROGRAMMING | 800 | [
"brute force"
] | A. Panoramix's Prediction | 2 | 256 | A prime number is a number which has exactly two distinct divisors: one and itself. For example, numbers 2, 7, 3 are prime, and 1, 6, 4 are not.
The next prime number after *x* is the smallest prime number greater than *x*. For example, the next prime number after 2 is 3, and the next prime number after 3 is 5. Note t... | The first and only input line contains two positive integers — *n* and *m* (2<=≤<=*n*<=<<=*m*<=≤<=50). It is guaranteed that *n* is prime.
Pretests contain all the cases with restrictions 2<=≤<=*n*<=<<=*m*<=≤<=4. | Print YES, if *m* is the next prime number after *n*, or NO otherwise. | [
"3 5\n",
"7 11\n",
"7 9\n"
] | [
"YES",
"YES",
"NO"
] | none | 500 | [
{
"input": "3 5",
"output": "YES"
},
{
"input": "7 11",
"output": "YES"
},
{
"input": "7 9",
"output": "NO"
},
{
"input": "2 3",
"output": "YES"
},
{
"input": "2 4",
"output": "NO"
},
{
"input": "3 4",
"output": "NO"
},
{
"input": "3 5",
... | 1,619,079,856 | 2,147,483,647 | Python 3 | OK | TESTS | 45 | 124 | 0 | n,m=map(int,input().split())
a=[2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,0]
print("YES"if a[a.index(n)+1]==m else "NO") | Title: Panoramix's Prediction
Time Limit: 2 seconds
Memory Limit: 256 megabytes
Problem Description:
A prime number is a number which has exactly two distinct divisors: one and itself. For example, numbers 2, 7, 3 are prime, and 1, 6, 4 are not.
The next prime number after *x* is the smallest prime number greater t... | ```python
n,m=map(int,input().split())
a=[2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,0]
print("YES"if a[a.index(n)+1]==m else "NO")
``` | 3.969 | MatrixStudio/Codeforces-Python-Submissions |
30 | A | Accounting | PROGRAMMING | 1,400 | [
"brute force",
"math"
] | A. Accounting | 2 | 256 | A long time ago in some far country lived king Copa. After the recent king's reform, he got so large powers that started to keep the books by himself.
The total income *A* of his kingdom during 0-th year is known, as well as the total income *B* during *n*-th year (these numbers can be negative — it means that there w... | The input contains three integers *A*, *B*, *n* (|*A*|,<=|*B*|<=≤<=1000, 1<=≤<=*n*<=≤<=10). | Output the required integer coefficient *X*, or «No solution», if such a coefficient does not exist or it is fractional. If there are several possible solutions, output any of them. | [
"2 18 2\n",
"-1 8 3\n",
"0 0 10\n",
"1 16 5\n"
] | [
"3",
"-2",
"5",
"No solution"
] | none | 500 | [
{
"input": "2 18 2",
"output": "3"
},
{
"input": "-1 8 3",
"output": "-2"
},
{
"input": "0 0 10",
"output": "5"
},
{
"input": "1 16 5",
"output": "No solution"
},
{
"input": "0 1 2",
"output": "No solution"
},
{
"input": "3 0 4",
"output": "0"
},... | 1,480,345,055 | 2,147,483,647 | Python 3 | RUNTIME_ERROR | TESTS | 4 | 124 | 0 | a,b,n=input().split()
import math
a=int(a)
b=int(b)
n=int(n)
c=1;
if b==0:
ans=0
else:
if a*b<0:
c=-1
a=abs(a)
b=abs(b)
ans=pow(b/a,1/n)
if ans-int(ans)<1e-8:
ans = int(ans+1e-8)*c
else:
ans="No solution"
print(ans) | Title: Accounting
Time Limit: 2 seconds
Memory Limit: 256 megabytes
Problem Description:
A long time ago in some far country lived king Copa. After the recent king's reform, he got so large powers that started to keep the books by himself.
The total income *A* of his kingdom during 0-th year is known, as well as th... | ```python
a,b,n=input().split()
import math
a=int(a)
b=int(b)
n=int(n)
c=1;
if b==0:
ans=0
else:
if a*b<0:
c=-1
a=abs(a)
b=abs(b)
ans=pow(b/a,1/n)
if ans-int(ans)<1e-8:
ans = int(ans+1e-8)*c
else:
ans="No solution"
print(ans)
``` | -1 | MatrixStudio/Codeforces-Python-Submissions |
959 | A | Mahmoud and Ehab and the even-odd game | PROGRAMMING | 800 | [
"games",
"math"
] | null | null | Mahmoud and Ehab play a game called the even-odd game. Ehab chooses his favorite integer *n* and then they take turns, starting from Mahmoud. In each player's turn, he has to choose an integer *a* and subtract it from *n* such that:
- 1<=≤<=*a*<=≤<=*n*. - If it's Mahmoud's turn, *a* has to be even, but if it's Ehab'... | The only line contains an integer *n* (1<=≤<=*n*<=≤<=109), the number at the beginning of the game. | Output "Mahmoud" (without quotes) if Mahmoud wins and "Ehab" (without quotes) otherwise. | [
"1\n",
"2\n"
] | [
"Ehab",
"Mahmoud"
] | In the first sample, Mahmoud can't choose any integer *a* initially because there is no positive even integer less than or equal to 1 so Ehab wins.
In the second sample, Mahmoud has to choose *a* = 2 and subtract it from *n*. It's Ehab's turn and *n* = 0. There is no positive odd integer less than or equal to 0 so Mah... | 500 | [
{
"input": "1",
"output": "Ehab"
},
{
"input": "2",
"output": "Mahmoud"
},
{
"input": "10000",
"output": "Mahmoud"
},
{
"input": "33333",
"output": "Ehab"
},
{
"input": "5",
"output": "Ehab"
},
{
"input": "1000000000",
"output": "Mahmoud"
},
{
... | 1,652,519,088 | 2,147,483,647 | Python 3 | WRONG_ANSWER | TESTS | 3 | 31 | 0 | a=int(input())
s=True
if a%2==0:
print('Mahmoud')
s=False
elif a==1:
print('Ehab')
s=False
elif a%2!=0:
print('Mahmoud')
s=False
# Sat May 14 2022 07:23:40 GMT+0000 (Coordinated Universal Time)
| Title: Mahmoud and Ehab and the even-odd game
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Mahmoud and Ehab play a game called the even-odd game. Ehab chooses his favorite integer *n* and then they take turns, starting from Mahmoud. In each player's turn, he has to choose an integer *a*... | ```python
a=int(input())
s=True
if a%2==0:
print('Mahmoud')
s=False
elif a==1:
print('Ehab')
s=False
elif a%2!=0:
print('Mahmoud')
s=False
# Sat May 14 2022 07:23:40 GMT+0000 (Coordinated Universal Time)
``` | 0 | MatrixStudio/Codeforces-Python-Submissions | |
133 | A | HQ9+ | PROGRAMMING | 900 | [
"implementation"
] | null | null | HQ9+ is a joke programming language which has only four one-character instructions:
- "H" prints "Hello, World!",- "Q" prints the source code of the program itself,- "9" prints the lyrics of "99 Bottles of Beer" song, - "+" increments the value stored in the internal accumulator.
Instructions "H" and "Q" are case-s... | The input will consist of a single line *p* which will give a program in HQ9+. String *p* will contain between 1 and 100 characters, inclusive. ASCII-code of each character of *p* will be between 33 (exclamation mark) and 126 (tilde), inclusive. | Output "YES", if executing the program will produce any output, and "NO" otherwise. | [
"Hi!\n",
"Codeforces\n"
] | [
"YES\n",
"NO\n"
] | In the first case the program contains only one instruction — "H", which prints "Hello, World!".
In the second case none of the program characters are language instructions. | 500 | [
{
"input": "Hi!",
"output": "YES"
},
{
"input": "Codeforces",
"output": "NO"
},
{
"input": "a+b=c",
"output": "NO"
},
{
"input": "hq-lowercase",
"output": "NO"
},
{
"input": "Q",
"output": "YES"
},
{
"input": "9",
"output": "YES"
},
{
"inpu... | 1,690,277,967 | 2,147,483,647 | Python 3 | WRONG_ANSWER | TESTS | 0 | 60 | 0 | x=input()
s=len(x)
for i in range(s-1):
if x[i]=='H' or x[i]=='Q' or x[i]=='9' or x[i]=='+':
print("YES")
else:
print("NO") | Title: HQ9+
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
HQ9+ is a joke programming language which has only four one-character instructions:
- "H" prints "Hello, World!",- "Q" prints the source code of the program itself,- "9" prints the lyrics of "99 Bottles of Beer" song, - "+" in... | ```python
x=input()
s=len(x)
for i in range(s-1):
if x[i]=='H' or x[i]=='Q' or x[i]=='9' or x[i]=='+':
print("YES")
else:
print("NO")
``` | 0 | MatrixStudio/Codeforces-Python-Submissions | |
0 | none | none | none | 0 | [
"none"
] | null | null | Barney lives in NYC. NYC has infinite number of intersections numbered with positive integers starting from 1. There exists a bidirectional road between intersections *i* and 2*i* and another road between *i* and 2*i*<=+<=1 for every positive integer *i*. You can clearly see that there exists a unique shortest path bet... | The first line of input contains a single integer *q* (1<=≤<=*q*<=≤<=1<=000).
The next *q* lines contain the information about the events in chronological order. Each event is described in form 1 *v* *u* *w* if it's an event when government makes a new rule about increasing the passing fee of all roads on the shortest... | For each event of second type print the sum of passing fee of all roads Barney passes in this event, in one line. Print the answers in chronological order of corresponding events. | [
"7\n1 3 4 30\n1 4 1 2\n1 3 6 8\n2 4 3\n1 6 1 40\n2 3 7\n2 2 4\n"
] | [
"94\n0\n32\n"
] | In the example testcase:
Here are the intersections used:
1. Intersections on the path are 3, 1, 2 and 4. 1. Intersections on the path are 4, 2 and 1. 1. Intersections on the path are only 3 and 6. 1. Intersections on the path are 4, 2, 1 and 3. Passing fee of roads on the path are 32, 32 and 30 in order. So answ... | 0 | [
{
"input": "7\n1 3 4 30\n1 4 1 2\n1 3 6 8\n2 4 3\n1 6 1 40\n2 3 7\n2 2 4",
"output": "94\n0\n32"
},
{
"input": "1\n2 666077344481199252 881371880336470888",
"output": "0"
},
{
"input": "10\n1 1 63669439577744021 396980128\n1 2582240553355225 63669439577744021 997926286\n1 258224055335522... | 1,594,364,948 | 2,147,483,647 | PyPy 3 | OK | TESTS | 49 | 327 | 33,894,400 | from collections import Counter
def read_int():
return int(input().strip())
def read_ints():
return list(map(int, input().strip().split(' ')))
def shortest_path(i, j):
path = []
while i != j:
if i > j:
path.append((i//2, i))
i //= 2
else:
path.ap... | Title: none
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Barney lives in NYC. NYC has infinite number of intersections numbered with positive integers starting from 1. There exists a bidirectional road between intersections *i* and 2*i* and another road between *i* and 2*i*<=+<=1 for ev... | ```python
from collections import Counter
def read_int():
return int(input().strip())
def read_ints():
return list(map(int, input().strip().split(' ')))
def shortest_path(i, j):
path = []
while i != j:
if i > j:
path.append((i//2, i))
i //= 2
else:
... | 3 | MatrixStudio/Codeforces-Python-Submissions | |
509 | A | Maximum in Table | PROGRAMMING | 800 | [
"brute force",
"implementation"
] | null | null | An *n*<=×<=*n* table *a* is defined as follows:
- The first row and the first column contain ones, that is: *a**i*,<=1<==<=*a*1,<=*i*<==<=1 for all *i*<==<=1,<=2,<=...,<=*n*. - Each of the remaining numbers in the table is equal to the sum of the number above it and the number to the left of it. In other words, the ... | The only line of input contains a positive integer *n* (1<=≤<=*n*<=≤<=10) — the number of rows and columns of the table. | Print a single line containing a positive integer *m* — the maximum value in the table. | [
"1\n",
"5\n"
] | [
"1",
"70"
] | In the second test the rows of the table look as follows: | 0 | [
{
"input": "1",
"output": "1"
},
{
"input": "5",
"output": "70"
},
{
"input": "2",
"output": "2"
},
{
"input": "3",
"output": "6"
},
{
"input": "4",
"output": "20"
},
{
"input": "6",
"output": "252"
},
{
"input": "7",
"output": "924"
... | 1,607,080,986 | 2,147,483,647 | Python 3 | OK | TESTS | 10 | 108 | 0 | n = int(input())
if n == 1:
print(1)
else:
a = b = 1
for i in range(1, n):
a *= i
for i in range(1, 2 * n - 1):
b *= i
print(int(b / a ** 2))
| Title: Maximum in Table
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
An *n*<=×<=*n* table *a* is defined as follows:
- The first row and the first column contain ones, that is: *a**i*,<=1<==<=*a*1,<=*i*<==<=1 for all *i*<==<=1,<=2,<=...,<=*n*. - Each of the remaining numbers in the t... | ```python
n = int(input())
if n == 1:
print(1)
else:
a = b = 1
for i in range(1, n):
a *= i
for i in range(1, 2 * n - 1):
b *= i
print(int(b / a ** 2))
``` | 3 | MatrixStudio/Codeforces-Python-Submissions | |
978 | B | File Name | PROGRAMMING | 800 | [
"greedy",
"strings"
] | null | null | You can not just take the file and send it. When Polycarp trying to send a file in the social network "Codehorses", he encountered an unexpected problem. If the name of the file contains three or more "x" (lowercase Latin letters "x") in a row, the system considers that the file content does not correspond to the socia... | The first line contains integer $n$ $(3 \le n \le 100)$ — the length of the file name.
The second line contains a string of length $n$ consisting of lowercase Latin letters only — the file name. | Print the minimum number of characters to remove from the file name so after that the name does not contain "xxx" as a substring. If initially the file name dost not contain a forbidden substring "xxx", print 0. | [
"6\nxxxiii\n",
"5\nxxoxx\n",
"10\nxxxxxxxxxx\n"
] | [
"1\n",
"0\n",
"8\n"
] | In the first example Polycarp tried to send a file with name contains number $33$, written in Roman numerals. But he can not just send the file, because it name contains three letters "x" in a row. To send the file he needs to remove any one of this letters. | 0 | [
{
"input": "6\nxxxiii",
"output": "1"
},
{
"input": "5\nxxoxx",
"output": "0"
},
{
"input": "10\nxxxxxxxxxx",
"output": "8"
},
{
"input": "100\nxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
"output": "98"
},
{
... | 1,695,711,053 | 2,147,483,647 | PyPy 3-64 | OK | TESTS | 13 | 46 | 0 | '''
************************ বিসমিল্লাহির রাহমানির রাহিম
بِسْمِ ٱللَّٰهِ ٱلرَّحْمَٰنِ ٱلرَّحِيمِ *********************
********************************************* Bismillahir Rahmanir Rahim
'''
'''************************************************************************
PROBLEM :B. ... | Title: File Name
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
You can not just take the file and send it. When Polycarp trying to send a file in the social network "Codehorses", he encountered an unexpected problem. If the name of the file contains three or more "x" (lowercase Latin let... | ```python
'''
************************ বিসমিল্লাহির রাহমানির রাহিম
بِسْمِ ٱللَّٰهِ ٱلرَّحْمَٰنِ ٱلرَّحِيمِ *********************
********************************************* Bismillahir Rahmanir Rahim
'''
'''************************************************************************
PR... | 3 | MatrixStudio/Codeforces-Python-Submissions | |
609 | C | Load Balancing | PROGRAMMING | 1,500 | [
"implementation",
"math"
] | null | null | In the school computer room there are *n* servers which are responsible for processing several computing tasks. You know the number of scheduled tasks for each server: there are *m**i* tasks assigned to the *i*-th server.
In order to balance the load for each server, you want to reassign some tasks to make the differe... | The first line contains positive number *n* (1<=≤<=*n*<=≤<=105) — the number of the servers.
The second line contains the sequence of non-negative integers *m*1,<=*m*2,<=...,<=*m**n* (0<=≤<=*m**i*<=≤<=2·104), where *m**i* is the number of tasks assigned to the *i*-th server. | Print the minimum number of seconds required to balance the load. | [
"2\n1 6\n",
"7\n10 11 10 11 10 11 11\n",
"5\n1 2 3 4 5\n"
] | [
"2\n",
"0\n",
"3\n"
] | In the first example two seconds are needed. In each second, a single task from server #2 should be moved to server #1. After two seconds there should be 3 tasks on server #1 and 4 tasks on server #2.
In the second example the load is already balanced.
A possible sequence of task movements for the third example is:
... | 0 | [
{
"input": "2\n1 6",
"output": "2"
},
{
"input": "7\n10 11 10 11 10 11 11",
"output": "0"
},
{
"input": "5\n1 2 3 4 5",
"output": "3"
},
{
"input": "10\n0 0 0 0 0 0 0 0 0 0",
"output": "0"
},
{
"input": "1\n0",
"output": "0"
},
{
"input": "1\n20000",
... | 1,650,149,361 | 2,147,483,647 | Python 3 | WRONG_ANSWER | TESTS | 8 | 31 | 0 | n = int(input())
a = list(map(int, input().split()))
tot = sum(a)
x = tot // n
ans = 0
for y in a:
if y < x:
ans += x-y
print(ans)
| Title: Load Balancing
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
In the school computer room there are *n* servers which are responsible for processing several computing tasks. You know the number of scheduled tasks for each server: there are *m**i* tasks assigned to the *i*-th server... | ```python
n = int(input())
a = list(map(int, input().split()))
tot = sum(a)
x = tot // n
ans = 0
for y in a:
if y < x:
ans += x-y
print(ans)
``` | 0 | MatrixStudio/Codeforces-Python-Submissions | |
908 | C | New Year and Curling | PROGRAMMING | 1,500 | [
"brute force",
"geometry",
"implementation",
"math"
] | null | null | Carol is currently curling.
She has *n* disks each with radius *r* on the 2D plane.
Initially she has all these disks above the line *y*<==<=10100.
She then will slide the disks towards the line *y*<==<=0 one by one in order from 1 to *n*.
When she slides the *i*-th disk, she will place its center at the point (*... | The first line will contain two integers *n* and *r* (1<=≤<=*n*,<=*r*<=≤<=1<=000), the number of disks, and the radius of the disks, respectively.
The next line will contain *n* integers *x*1,<=*x*2,<=...,<=*x**n* (1<=≤<=*x**i*<=≤<=1<=000) — the *x*-coordinates of the disks. | Print a single line with *n* numbers. The *i*-th number denotes the *y*-coordinate of the center of the *i*-th disk. The output will be accepted if it has absolute or relative error at most 10<=-<=6.
Namely, let's assume that your answer for a particular value of a coordinate is *a* and the answer of the jury is *b*. ... | [
"6 2\n5 5 6 8 3 12\n"
] | [
"2 6.0 9.87298334621 13.3370849613 12.5187346573 13.3370849613\n"
] | The final positions of the disks will look as follows:
In particular, note the position of the last disk. | 1,000 | [
{
"input": "6 2\n5 5 6 8 3 12",
"output": "2 6.0 9.87298334621 13.3370849613 12.5187346573 13.3370849613"
},
{
"input": "1 1\n5",
"output": "1"
},
{
"input": "5 300\n939 465 129 611 532",
"output": "300 667.864105343 1164.9596696 1522.27745533 2117.05388391"
},
{
"input": "5 ... | 1,559,384,791 | 2,147,483,647 | Python 3 | OK | TESTS | 15 | 795 | 409,600 | n,r = [int(i) for i in input().split()]
inp = [int(i) for i in input().split()]
disks = []
import math
for i in inp:
mxY=r
for j in disks:
#print(j)
if 2*r >= abs(j[0]-i) :
y = j[1] + math.sqrt(4*r*r - (j[0]-i)*(j[0]-i))
mxY = max(mxY,y)
disks.append([i,mxY])... | Title: New Year and Curling
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Carol is currently curling.
She has *n* disks each with radius *r* on the 2D plane.
Initially she has all these disks above the line *y*<==<=10100.
She then will slide the disks towards the line *y*<==<=0 one b... | ```python
n,r = [int(i) for i in input().split()]
inp = [int(i) for i in input().split()]
disks = []
import math
for i in inp:
mxY=r
for j in disks:
#print(j)
if 2*r >= abs(j[0]-i) :
y = j[1] + math.sqrt(4*r*r - (j[0]-i)*(j[0]-i))
mxY = max(mxY,y)
disks.appen... | 3 | MatrixStudio/Codeforces-Python-Submissions | |
743 | B | Chloe and the sequence | PROGRAMMING | 1,200 | [
"binary search",
"bitmasks",
"constructive algorithms",
"implementation"
] | null | null | Chloe, the same as Vladik, is a competitive programmer. She didn't have any problems to get to the olympiad like Vladik, but she was confused by the task proposed on the olympiad.
Let's consider the following algorithm of generating a sequence of integers. Initially we have a sequence consisting of a single element eq... | The only line contains two integers *n* and *k* (1<=≤<=*n*<=≤<=50, 1<=≤<=*k*<=≤<=2*n*<=-<=1). | Print single integer — the integer at the *k*-th position in the obtained sequence. | [
"3 2\n",
"4 8\n"
] | [
"2",
"4"
] | In the first sample the obtained sequence is [1, 2, 1, 3, 1, 2, 1]. The number on the second position is 2.
In the second sample the obtained sequence is [1, 2, 1, 3, 1, 2, 1, 4, 1, 2, 1, 3, 1, 2, 1]. The number on the eighth position is 4. | 1,000 | [
{
"input": "3 2",
"output": "2"
},
{
"input": "4 8",
"output": "4"
},
{
"input": "5 27",
"output": "1"
},
{
"input": "7 44",
"output": "3"
},
{
"input": "15 18432",
"output": "12"
},
{
"input": "20 259676",
"output": "3"
},
{
"input": "30 6... | 1,651,678,139 | 2,147,483,647 | Python 3 | TIME_LIMIT_EXCEEDED | TESTS | 6 | 1,000 | 112,844,800 | n, k = map(int, input().split())
arr = [1]
if n==1:
s = "1"
arr.append(s)
else:
for i in range(2,n+1):
arr.append(i)
for p in arr[:-1]:
arr.append(p)
print(arr[k-1]) | Title: Chloe and the sequence
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Chloe, the same as Vladik, is a competitive programmer. She didn't have any problems to get to the olympiad like Vladik, but she was confused by the task proposed on the olympiad.
Let's consider the following a... | ```python
n, k = map(int, input().split())
arr = [1]
if n==1:
s = "1"
arr.append(s)
else:
for i in range(2,n+1):
arr.append(i)
for p in arr[:-1]:
arr.append(p)
print(arr[k-1])
``` | 0 | MatrixStudio/Codeforces-Python-Submissions | |
583 | A | Asphalting Roads | PROGRAMMING | 1,000 | [
"implementation"
] | null | null | City X consists of *n* vertical and *n* horizontal infinite roads, forming *n*<=×<=*n* intersections. Roads (both vertical and horizontal) are numbered from 1 to *n*, and the intersections are indicated by the numbers of the roads that form them.
Sand roads have long been recognized out of date, so the decision was ma... | The first line contains integer *n* (1<=≤<=*n*<=≤<=50) — the number of vertical and horizontal roads in the city.
Next *n*2 lines contain the order of intersections in the schedule. The *i*-th of them contains two numbers *h**i*,<=*v**i* (1<=≤<=*h**i*,<=*v**i*<=≤<=*n*), separated by a space, and meaning that the inte... | In the single line print the numbers of the days when road works will be in progress in ascending order. The days are numbered starting from 1. | [
"2\n1 1\n1 2\n2 1\n2 2\n",
"1\n1 1\n"
] | [
"1 4 \n",
"1 \n"
] | In the sample the brigade acts like that:
1. On the first day the brigade comes to the intersection of the 1-st horizontal and the 1-st vertical road. As none of them has been asphalted, the workers asphalt the 1-st vertical and the 1-st horizontal road; 1. On the second day the brigade of the workers comes to the i... | 500 | [
{
"input": "2\n1 1\n1 2\n2 1\n2 2",
"output": "1 4 "
},
{
"input": "1\n1 1",
"output": "1 "
},
{
"input": "2\n1 1\n2 2\n1 2\n2 1",
"output": "1 2 "
},
{
"input": "2\n1 2\n2 2\n2 1\n1 1",
"output": "1 3 "
},
{
"input": "3\n2 2\n1 2\n3 2\n3 3\n1 1\n2 3\n1 3\n3 1\n2 ... | 1,443,963,720 | 2,147,483,647 | Python 3 | WRONG_ANSWER | TESTS | 5 | 61 | 0 | n=int(input())
hor=[False]*n
ver=[False]*n
for i in range(n*n):
k=list(map(int,input().split()))
if (hor[k[0]-1]==True and ver[k[1]-1]==True):
break
if not(hor[k[0]-1]==True or ver[k[1]-1]==True):
ver[k[1]-1]=True
hor[k[0]-1]=True
print(i+1,end=' ')
| Title: Asphalting Roads
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
City X consists of *n* vertical and *n* horizontal infinite roads, forming *n*<=×<=*n* intersections. Roads (both vertical and horizontal) are numbered from 1 to *n*, and the intersections are indicated by the numbers ... | ```python
n=int(input())
hor=[False]*n
ver=[False]*n
for i in range(n*n):
k=list(map(int,input().split()))
if (hor[k[0]-1]==True and ver[k[1]-1]==True):
break
if not(hor[k[0]-1]==True or ver[k[1]-1]==True):
ver[k[1]-1]=True
hor[k[0]-1]=True
print(i+1,end=' ')
... | 0 | MatrixStudio/Codeforces-Python-Submissions | |
746 | B | Decoding | PROGRAMMING | 900 | [
"implementation",
"strings"
] | null | null | Polycarp is mad about coding, that is why he writes Sveta encoded messages. He calls the median letter in a word the letter which is in the middle of the word. If the word's length is even, the median letter is the left of the two middle letters. In the following examples, the median letter is highlighted: contest, inf... | The first line contains a positive integer *n* (1<=≤<=*n*<=≤<=2000) — the length of the encoded word.
The second line contains the string *s* of length *n* consisting of lowercase English letters — the encoding. | Print the word that Polycarp encoded. | [
"5\nlogva\n",
"2\nno\n",
"4\nabba\n"
] | [
"volga\n",
"no\n",
"baba\n"
] | In the first example Polycarp encoded the word volga. At first, he wrote down the letter l from the position 3, after that his word looked like voga. After that Polycarp wrote down the letter o from the position 2, his word became vga. Then Polycarp wrote down the letter g which was at the second position, the word bec... | 1,000 | [
{
"input": "5\nlogva",
"output": "volga"
},
{
"input": "2\nno",
"output": "no"
},
{
"input": "4\nabba",
"output": "baba"
},
{
"input": "51\nkfsmpaeviowvkdbuhdagquxxqniselafnfbrgbhmsugcbbnlrvv",
"output": "vlbcumbrfflsnxugdudvovamfkspeiwkbhaqxqieanbghsgbnrv"
},
{
"... | 1,663,484,454 | 2,147,483,647 | Python 3 | WRONG_ANSWER | TESTS | 1 | 31 | 0 | length=input()
s1=input()
s2=""
i=1
s2=s2+s1[0]
while(i<len(s1)):
if(i%2==0):
s2=s2+s1[i]
if(i%2==1):
s2=s1[i]+s2
i=i+1
print(s2) | Title: Decoding
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Polycarp is mad about coding, that is why he writes Sveta encoded messages. He calls the median letter in a word the letter which is in the middle of the word. If the word's length is even, the median letter is the left of the... | ```python
length=input()
s1=input()
s2=""
i=1
s2=s2+s1[0]
while(i<len(s1)):
if(i%2==0):
s2=s2+s1[i]
if(i%2==1):
s2=s1[i]+s2
i=i+1
print(s2)
``` | 0 | MatrixStudio/Codeforces-Python-Submissions | |
926 | B | Add Points | PROGRAMMING | 1,800 | [] | null | null | There are *n* points on a straight line, and the *i*-th point among them is located at *x**i*. All these coordinates are distinct.
Determine the number *m* — the smallest number of points you should add on the line to make the distances between all neighboring points equal. | The first line contains a single integer *n* (3<=≤<=*n*<=≤<=100<=000) — the number of points.
The second line contains a sequence of integers *x*1,<=*x*2,<=...,<=*x**n* (<=-<=109<=≤<=*x**i*<=≤<=109) — the coordinates of the points. All these coordinates are distinct. The points can be given in an arbitrary order. | Print a single integer *m* — the smallest number of points you should add on the line to make the distances between all neighboring points equal. | [
"3\n-5 10 5\n",
"6\n100 200 400 300 600 500\n",
"4\n10 9 0 -1\n"
] | [
"1\n",
"0\n",
"8\n"
] | In the first example you can add one point with coordinate 0.
In the second example the distances between all neighboring points are already equal, so you shouldn't add anything. | 0 | [
{
"input": "3\n-5 10 5",
"output": "1"
},
{
"input": "6\n100 200 400 300 600 500",
"output": "0"
},
{
"input": "4\n10 9 0 -1",
"output": "8"
},
{
"input": "3\n1 4 7",
"output": "0"
},
{
"input": "3\n1 4 6",
"output": "3"
},
{
"input": "3\n1 2 6",
"... | 1,521,305,118 | 4,218 | Python 3 | OK | TESTS | 134 | 607 | 16,384,000 | from fractions import gcd
n = int(input())
node = sorted(list(map(int, input().split())))
l = int(gcd(node[1] - node[0], node[2] - node[1]))
cou = int(0)
for i in range(n - 2):
l = gcd(l, node[i + 2] - node[i + 1])
for i in range(n - 1):
cou = int(cou + (node[i + 1] - node[i]) / l - 1)
print ... | Title: Add Points
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
There are *n* points on a straight line, and the *i*-th point among them is located at *x**i*. All these coordinates are distinct.
Determine the number *m* — the smallest number of points you should add on the line to make ... | ```python
from fractions import gcd
n = int(input())
node = sorted(list(map(int, input().split())))
l = int(gcd(node[1] - node[0], node[2] - node[1]))
cou = int(0)
for i in range(n - 2):
l = gcd(l, node[i + 2] - node[i + 1])
for i in range(n - 1):
cou = int(cou + (node[i + 1] - node[i]) / l - ... | 3 | MatrixStudio/Codeforces-Python-Submissions | |
747 | B | Mammoth's Genome Decoding | PROGRAMMING | 900 | [
"implementation",
"strings"
] | null | null | The process of mammoth's genome decoding in Berland comes to its end!
One of the few remaining tasks is to restore unrecognized nucleotides in a found chain *s*. Each nucleotide is coded with a capital letter of English alphabet: 'A', 'C', 'G' or 'T'. Unrecognized nucleotides are coded by a question mark '?'. Thus, *s... | The first line contains the integer *n* (4<=≤<=*n*<=≤<=255) — the length of the genome.
The second line contains the string *s* of length *n* — the coded genome. It consists of characters 'A', 'C', 'G', 'T' and '?'. | If it is possible to decode the genome, print it. If there are multiple answer, print any of them. If it is not possible, print three equals signs in a row: "===" (without quotes). | [
"8\nAG?C??CT\n",
"4\nAGCT\n",
"6\n????G?\n",
"4\nAA??\n"
] | [
"AGACGTCT\n",
"AGCT\n",
"===\n",
"===\n"
] | In the first example you can replace the first question mark with the letter 'A', the second question mark with the letter 'G', the third question mark with the letter 'T', then each nucleotide in the genome would be presented twice.
In the second example the genome is already decoded correctly and each nucleotide is ... | 1,000 | [
{
"input": "8\nAG?C??CT",
"output": "AGACGTCT"
},
{
"input": "4\nAGCT",
"output": "AGCT"
},
{
"input": "6\n????G?",
"output": "==="
},
{
"input": "4\nAA??",
"output": "==="
},
{
"input": "4\n????",
"output": "ACGT"
},
{
"input": "252\n???????GCG??T??TT... | 1,643,286,761 | 2,147,483,647 | Python 3 | WRONG_ANSWER | TESTS | 4 | 46 | 0 | f=int(input())
n=input()
acount=n.count('A')
gcount=n.count('G')
ccount=n.count('C')
tcount=n.count('T')
rem=n.count('?')
ma=max(acount,gcount,ccount,tcount)
l=[]
rem1=ma-acount
if rem1!=0:
rem=rem-rem1
for j in range(rem1):
l.append('A')
rem1=ma-gcount
if rem1!=0:
rem=rem-rem1... | Title: Mammoth's Genome Decoding
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
The process of mammoth's genome decoding in Berland comes to its end!
One of the few remaining tasks is to restore unrecognized nucleotides in a found chain *s*. Each nucleotide is coded with a capital letter... | ```python
f=int(input())
n=input()
acount=n.count('A')
gcount=n.count('G')
ccount=n.count('C')
tcount=n.count('T')
rem=n.count('?')
ma=max(acount,gcount,ccount,tcount)
l=[]
rem1=ma-acount
if rem1!=0:
rem=rem-rem1
for j in range(rem1):
l.append('A')
rem1=ma-gcount
if rem1!=0:
re... | 0 | MatrixStudio/Codeforces-Python-Submissions | |
92 | A | Chips | PROGRAMMING | 800 | [
"implementation",
"math"
] | A. Chips | 2 | 256 | There are *n* walruses sitting in a circle. All of them are numbered in the clockwise order: the walrus number 2 sits to the left of the walrus number 1, the walrus number 3 sits to the left of the walrus number 2, ..., the walrus number 1 sits to the left of the walrus number *n*.
The presenter has *m* chips. The pre... | The first line contains two integers *n* and *m* (1<=≤<=*n*<=≤<=50, 1<=≤<=*m*<=≤<=104) — the number of walruses and the number of chips correspondingly. | Print the number of chips the presenter ended up with. | [
"4 11\n",
"17 107\n",
"3 8\n"
] | [
"0\n",
"2\n",
"1\n"
] | In the first sample the presenter gives one chip to the walrus number 1, two chips to the walrus number 2, three chips to the walrus number 3, four chips to the walrus number 4, then again one chip to the walrus number 1. After that the presenter runs out of chips. He can't give anything to the walrus number 2 and the ... | 500 | [
{
"input": "4 11",
"output": "0"
},
{
"input": "17 107",
"output": "2"
},
{
"input": "3 8",
"output": "1"
},
{
"input": "46 7262",
"output": "35"
},
{
"input": "32 6864",
"output": "0"
},
{
"input": "36 6218",
"output": "14"
},
{
"input": "... | 1,584,892,468 | 2,147,483,647 | Python 3 | OK | TESTS | 25 | 218 | 0 | q=lambda:map(int,input().split())
qi=lambda:int(input())
qs=lambda:input().split()
n,m=q()
c=m%sum(i for i in range(1,n+1))
for i in range(1,n):
if c-i>=0:
c-=i
else:break
print(c) | Title: Chips
Time Limit: 2 seconds
Memory Limit: 256 megabytes
Problem Description:
There are *n* walruses sitting in a circle. All of them are numbered in the clockwise order: the walrus number 2 sits to the left of the walrus number 1, the walrus number 3 sits to the left of the walrus number 2, ..., the walrus nu... | ```python
q=lambda:map(int,input().split())
qi=lambda:int(input())
qs=lambda:input().split()
n,m=q()
c=m%sum(i for i in range(1,n+1))
for i in range(1,n):
if c-i>=0:
c-=i
else:break
print(c)
``` | 3.9455 | MatrixStudio/Codeforces-Python-Submissions |
743 | B | Chloe and the sequence | PROGRAMMING | 1,200 | [
"binary search",
"bitmasks",
"constructive algorithms",
"implementation"
] | null | null | Chloe, the same as Vladik, is a competitive programmer. She didn't have any problems to get to the olympiad like Vladik, but she was confused by the task proposed on the olympiad.
Let's consider the following algorithm of generating a sequence of integers. Initially we have a sequence consisting of a single element eq... | The only line contains two integers *n* and *k* (1<=≤<=*n*<=≤<=50, 1<=≤<=*k*<=≤<=2*n*<=-<=1). | Print single integer — the integer at the *k*-th position in the obtained sequence. | [
"3 2\n",
"4 8\n"
] | [
"2",
"4"
] | In the first sample the obtained sequence is [1, 2, 1, 3, 1, 2, 1]. The number on the second position is 2.
In the second sample the obtained sequence is [1, 2, 1, 3, 1, 2, 1, 4, 1, 2, 1, 3, 1, 2, 1]. The number on the eighth position is 4. | 1,000 | [
{
"input": "3 2",
"output": "2"
},
{
"input": "4 8",
"output": "4"
},
{
"input": "5 27",
"output": "1"
},
{
"input": "7 44",
"output": "3"
},
{
"input": "15 18432",
"output": "12"
},
{
"input": "20 259676",
"output": "3"
},
{
"input": "30 6... | 1,593,932,332 | 2,147,483,647 | PyPy 3 | WRONG_ANSWER | TESTS | 0 | 124 | 20,172,800 | import math
n,k=map(int,input().split())
if(k%2!=0):
print(1)
else:
if(k==math.pow(2,n-1)):
print(n)
else:
for i in range(2,n):
if(k%math.pow(2,i)==math.pow(2,i-1)):
print(math.pow(2,i-1))
| Title: Chloe and the sequence
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Chloe, the same as Vladik, is a competitive programmer. She didn't have any problems to get to the olympiad like Vladik, but she was confused by the task proposed on the olympiad.
Let's consider the following a... | ```python
import math
n,k=map(int,input().split())
if(k%2!=0):
print(1)
else:
if(k==math.pow(2,n-1)):
print(n)
else:
for i in range(2,n):
if(k%math.pow(2,i)==math.pow(2,i-1)):
print(math.pow(2,i-1))
``` | 0 | MatrixStudio/Codeforces-Python-Submissions | |
454 | B | Little Pony and Sort by Shift | PROGRAMMING | 1,200 | [
"implementation"
] | null | null | One day, Twilight Sparkle is interested in how to sort a sequence of integers *a*1,<=*a*2,<=...,<=*a**n* in non-decreasing order. Being a young unicorn, the only operation she can perform is a unit shift. That is, she can move the last element of the sequence to its beginning:
Help Twilight Sparkle to calculate: what ... | The first line contains an integer *n* (2<=≤<=*n*<=≤<=105). The second line contains *n* integer numbers *a*1,<=*a*2,<=...,<=*a**n* (1<=≤<=*a**i*<=≤<=105). | If it's impossible to sort the sequence output -1. Otherwise output the minimum number of operations Twilight Sparkle needs to sort it. | [
"2\n2 1\n",
"3\n1 3 2\n",
"2\n1 2\n"
] | [
"1\n",
"-1\n",
"0\n"
] | none | 1,000 | [
{
"input": "2\n2 1",
"output": "1"
},
{
"input": "3\n1 3 2",
"output": "-1"
},
{
"input": "2\n1 2",
"output": "0"
},
{
"input": "6\n3 4 5 6 3 2",
"output": "-1"
},
{
"input": "3\n1 2 1",
"output": "1"
},
{
"input": "5\n1 1 2 1 1",
"output": "2"
}... | 1,612,940,074 | 2,147,483,647 | PyPy 3 | WRONG_ANSWER | TESTS | 5 | 156 | 12,083,200 | from sys import stdin
stdin.readline
def mp(): return list(map(int, stdin.readline().strip().split()))
def it():return int(stdin.readline().strip())
from collections import defaultdict as df
n=it()
l=mp()
i=0
while i<n-1:
if l[i]<=l[i+1]:
i+=1
else:
break
a = l[i+1:][::-1]+l[:i+1]
l.sort()
# ... | Title: Little Pony and Sort by Shift
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
One day, Twilight Sparkle is interested in how to sort a sequence of integers *a*1,<=*a*2,<=...,<=*a**n* in non-decreasing order. Being a young unicorn, the only operation she can perform is a unit shift. ... | ```python
from sys import stdin
stdin.readline
def mp(): return list(map(int, stdin.readline().strip().split()))
def it():return int(stdin.readline().strip())
from collections import defaultdict as df
n=it()
l=mp()
i=0
while i<n-1:
if l[i]<=l[i+1]:
i+=1
else:
break
a = l[i+1:][::-1]+l[:i+1]
l.... | 0 | MatrixStudio/Codeforces-Python-Submissions | |
50 | A | Domino piling | PROGRAMMING | 800 | [
"greedy",
"math"
] | A. Domino piling | 2 | 256 | You are given a rectangular board of *M*<=×<=*N* squares. Also you are given an unlimited number of standard domino pieces of 2<=×<=1 squares. You are allowed to rotate the pieces. You are asked to place as many dominoes as possible on the board so as to meet the following conditions:
1. Each domino completely covers ... | In a single line you are given two integers *M* and *N* — board sizes in squares (1<=≤<=*M*<=≤<=*N*<=≤<=16). | Output one number — the maximal number of dominoes, which can be placed. | [
"2 4\n",
"3 3\n"
] | [
"4\n",
"4\n"
] | none | 500 | [
{
"input": "2 4",
"output": "4"
},
{
"input": "3 3",
"output": "4"
},
{
"input": "1 5",
"output": "2"
},
{
"input": "1 6",
"output": "3"
},
{
"input": "1 15",
"output": "7"
},
{
"input": "1 16",
"output": "8"
},
{
"input": "2 5",
"outpu... | 1,632,758,504 | 2,147,483,647 | Python 3 | OK | TESTS | 35 | 122 | 6,758,400 | n=input()
lst=n.split()
m=int(lst[0])
s=int(lst[1])
a=m*s
q=a/2
print(int(q))
| Title: Domino piling
Time Limit: 2 seconds
Memory Limit: 256 megabytes
Problem Description:
You are given a rectangular board of *M*<=×<=*N* squares. Also you are given an unlimited number of standard domino pieces of 2<=×<=1 squares. You are allowed to rotate the pieces. You are asked to place as many dominoes as p... | ```python
n=input()
lst=n.split()
m=int(lst[0])
s=int(lst[1])
a=m*s
q=a/2
print(int(q))
``` | 3.956911 | MatrixStudio/Codeforces-Python-Submissions |
4 | A | Watermelon | PROGRAMMING | 800 | [
"brute force",
"math"
] | A. Watermelon | 1 | 64 | One hot summer day Pete and his friend Billy decided to buy a watermelon. They chose the biggest and the ripest one, in their opinion. After that the watermelon was weighed, and the scales showed *w* kilos. They rushed home, dying of thirst, and decided to divide the berry, however they faced a hard problem.
Pete and ... | The first (and the only) input line contains integer number *w* (1<=≤<=*w*<=≤<=100) — the weight of the watermelon bought by the boys. | Print YES, if the boys can divide the watermelon into two parts, each of them weighing even number of kilos; and NO in the opposite case. | [
"8\n"
] | [
"YES\n"
] | For example, the boys can divide the watermelon into two parts of 2 and 6 kilos respectively (another variant — two parts of 4 and 4 kilos). | 0 | [
{
"input": "8",
"output": "YES"
},
{
"input": "5",
"output": "NO"
},
{
"input": "4",
"output": "YES"
},
{
"input": "3",
"output": "NO"
},
{
"input": "2",
"output": "NO"
},
{
"input": "1",
"output": "NO"
},
{
"input": "7",
"output": "NO"... | 1,690,178,127 | 2,147,483,647 | Python 3 | COMPILATION_ERROR | TESTS | 0 | 0 | 0 | def can_divide_watermelon(w)
if w % 2 == 0 and w > 2:
return True
else:
return False
if name == "main":
w = int(input())
if can_divide_watermelon(w):
print("YES")
else:
print("NO") | Title: Watermelon
Time Limit: 1 seconds
Memory Limit: 64 megabytes
Problem Description:
One hot summer day Pete and his friend Billy decided to buy a watermelon. They chose the biggest and the ripest one, in their opinion. After that the watermelon was weighed, and the scales showed *w* kilos. They rushed home, dyin... | ```python
def can_divide_watermelon(w)
if w % 2 == 0 and w > 2:
return True
else:
return False
if name == "main":
w = int(input())
if can_divide_watermelon(w):
print("YES")
else:
print("NO")
``` | -1 | MatrixStudio/Codeforces-Python-Submissions |
189 | A | Cut Ribbon | PROGRAMMING | 1,300 | [
"brute force",
"dp"
] | null | null | Polycarpus has a ribbon, its length is *n*. He wants to cut the ribbon in a way that fulfils the following two conditions:
- After the cutting each ribbon piece should have length *a*, *b* or *c*. - After the cutting the number of ribbon pieces should be maximum.
Help Polycarpus and find the number of ribbon piece... | The first line contains four space-separated integers *n*, *a*, *b* and *c* (1<=≤<=*n*,<=*a*,<=*b*,<=*c*<=≤<=4000) — the length of the original ribbon and the acceptable lengths of the ribbon pieces after the cutting, correspondingly. The numbers *a*, *b* and *c* can coincide. | Print a single number — the maximum possible number of ribbon pieces. It is guaranteed that at least one correct ribbon cutting exists. | [
"5 5 3 2\n",
"7 5 5 2\n"
] | [
"2\n",
"2\n"
] | In the first example Polycarpus can cut the ribbon in such way: the first piece has length 2, the second piece has length 3.
In the second example Polycarpus can cut the ribbon in such way: the first piece has length 5, the second piece has length 2. | 500 | [
{
"input": "5 5 3 2",
"output": "2"
},
{
"input": "7 5 5 2",
"output": "2"
},
{
"input": "4 4 4 4",
"output": "1"
},
{
"input": "1 1 1 1",
"output": "1"
},
{
"input": "4000 1 2 3",
"output": "4000"
},
{
"input": "4000 3 4 5",
"output": "1333"
},
... | 1,689,874,711 | 2,147,483,647 | Python 3 | RUNTIME_ERROR | TESTS | 4 | 31 | 0 | n,a,b,c = list(map(int,input().split()))
l = [a,b,c]
l.sort()
if l[0]==n:
print(1)
exit()
c = 0
r = 0
while n>=l[c]:
n-= l[c]
r +=1
c+=1
print(r)
| Title: Cut Ribbon
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Polycarpus has a ribbon, its length is *n*. He wants to cut the ribbon in a way that fulfils the following two conditions:
- After the cutting each ribbon piece should have length *a*, *b* or *c*. - After the cutting the... | ```python
n,a,b,c = list(map(int,input().split()))
l = [a,b,c]
l.sort()
if l[0]==n:
print(1)
exit()
c = 0
r = 0
while n>=l[c]:
n-= l[c]
r +=1
c+=1
print(r)
``` | -1 | MatrixStudio/Codeforces-Python-Submissions | |
596 | A | Wilbur and Swimming Pool | PROGRAMMING | 1,100 | [
"geometry",
"implementation"
] | null | null | After making bad dives into swimming pools, Wilbur wants to build a swimming pool in the shape of a rectangle in his backyard. He has set up coordinate axes, and he wants the sides of the rectangle to be parallel to them. Of course, the area of the rectangle must be positive. Wilbur had all four vertices of the planned... | The first line of the input contains a single integer *n* (1<=≤<=*n*<=≤<=4) — the number of vertices that were not erased by Wilbur's friend.
Each of the following *n* lines contains two integers *x**i* and *y**i* (<=-<=1000<=≤<=*x**i*,<=*y**i*<=≤<=1000) —the coordinates of the *i*-th vertex that remains. Vertices are... | Print the area of the initial rectangle if it could be uniquely determined by the points remaining. Otherwise, print <=-<=1. | [
"2\n0 0\n1 1\n",
"1\n1 1\n"
] | [
"1\n",
"-1\n"
] | In the first sample, two opposite corners of the initial rectangle are given, and that gives enough information to say that the rectangle is actually a unit square.
In the second sample there is only one vertex left and this is definitely not enough to uniquely define the area. | 500 | [
{
"input": "2\n0 0\n1 1",
"output": "1"
},
{
"input": "1\n1 1",
"output": "-1"
},
{
"input": "1\n-188 17",
"output": "-1"
},
{
"input": "1\n71 -740",
"output": "-1"
},
{
"input": "4\n-56 -858\n-56 -174\n778 -858\n778 -174",
"output": "570456"
},
{
"inp... | 1,614,671,936 | 2,147,483,647 | Python 3 | OK | TESTS | 121 | 77 | 307,200 | n = int(input())
v = []
for i in range(n):
v.append([int(i) for i in input().split()])
v.sort()
if n == 1:
print(-1)
elif n == 2:
if v[0][1] == v[1][1] or v[1][0] == v[0][0]:
print(-1)
else:
print(abs(v[0][0]-v[1][0]) * abs(v[0][1]-v[1][1]))
elif n == 3:
if v[0][0]... | Title: Wilbur and Swimming Pool
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
After making bad dives into swimming pools, Wilbur wants to build a swimming pool in the shape of a rectangle in his backyard. He has set up coordinate axes, and he wants the sides of the rectangle to be parall... | ```python
n = int(input())
v = []
for i in range(n):
v.append([int(i) for i in input().split()])
v.sort()
if n == 1:
print(-1)
elif n == 2:
if v[0][1] == v[1][1] or v[1][0] == v[0][0]:
print(-1)
else:
print(abs(v[0][0]-v[1][0]) * abs(v[0][1]-v[1][1]))
elif n == 3:
... | 3 | MatrixStudio/Codeforces-Python-Submissions | |
193 | A | Cutting Figure | PROGRAMMING | 1,700 | [
"constructive algorithms",
"graphs",
"trees"
] | null | null | You've gotten an *n*<=×<=*m* sheet of squared paper. Some of its squares are painted. Let's mark the set of all painted squares as *A*. Set *A* is connected. Your task is to find the minimum number of squares that we can delete from set *A* to make it not connected.
A set of painted squares is called connected, if for... | The first input line contains two space-separated integers *n* and *m* (1<=≤<=*n*,<=*m*<=≤<=50) — the sizes of the sheet of paper.
Each of the next *n* lines contains *m* characters — the description of the sheet of paper: the *j*-th character of the *i*-th line equals either "#", if the corresponding square is paint... | On the first line print the minimum number of squares that need to be deleted to make set *A* not connected. If it is impossible, print -1. | [
"5 4\n####\n#..#\n#..#\n#..#\n####\n",
"5 5\n#####\n#...#\n#####\n#...#\n#####\n"
] | [
"2\n",
"2\n"
] | In the first sample you can delete any two squares that do not share a side. After that the set of painted squares is not connected anymore.
The note to the second sample is shown on the figure below. To the left there is a picture of the initial set of squares. To the right there is a set with deleted squares. The de... | 500 | [
{
"input": "5 4\n####\n#..#\n#..#\n#..#\n####",
"output": "2"
},
{
"input": "5 5\n#####\n#...#\n#####\n#...#\n#####",
"output": "2"
},
{
"input": "1 10\n.########.",
"output": "1"
},
{
"input": "1 1\n#",
"output": "-1"
},
{
"input": "3 3\n.#.\n###\n.#.",
"outp... | 1,621,100,000 | 2,147,483,647 | PyPy 3 | WRONG_ANSWER | TESTS | 2 | 154 | 0 | dx = [1,0,-1,0]
dy = [0,1,0,-1]
def isValid(grid,r,c):
if r>=0 and r<len(grid) and c>=0 and c<len(grid[0]) and grid[r][c] == '#':
return True
return False
def isConnected(grid,count):
stack = []
visited = set()
for i in range(len(grid)):
for j in range(len(grid[0])):
... | Title: Cutting Figure
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
You've gotten an *n*<=×<=*m* sheet of squared paper. Some of its squares are painted. Let's mark the set of all painted squares as *A*. Set *A* is connected. Your task is to find the minimum number of squares that we can... | ```python
dx = [1,0,-1,0]
dy = [0,1,0,-1]
def isValid(grid,r,c):
if r>=0 and r<len(grid) and c>=0 and c<len(grid[0]) and grid[r][c] == '#':
return True
return False
def isConnected(grid,count):
stack = []
visited = set()
for i in range(len(grid)):
for j in range(len(gri... | 0 | MatrixStudio/Codeforces-Python-Submissions | |
165 | B | Burning Midnight Oil | PROGRAMMING | 1,500 | [
"binary search",
"implementation"
] | null | null | One day a highly important task was commissioned to Vasya — writing a program in a night. The program consists of *n* lines of code. Vasya is already exhausted, so he works like that: first he writes *v* lines of code, drinks a cup of tea, then he writes as much as lines, drinks another cup of tea, then he writes lin... | The input consists of two integers *n* and *k*, separated by spaces — the size of the program in lines and the productivity reduction coefficient, 1<=≤<=*n*<=≤<=109, 2<=≤<=*k*<=≤<=10. | Print the only integer — the minimum value of *v* that lets Vasya write the program in one night. | [
"7 2\n",
"59 9\n"
] | [
"4\n",
"54\n"
] | In the first sample the answer is *v* = 4. Vasya writes the code in the following portions: first 4 lines, then 2, then 1, and then Vasya falls asleep. Thus, he manages to write 4 + 2 + 1 = 7 lines in a night and complete the task.
In the second sample the answer is *v* = 54. Vasya writes the code in the following por... | 1,000 | [
{
"input": "7 2",
"output": "4"
},
{
"input": "59 9",
"output": "54"
},
{
"input": "1 9",
"output": "1"
},
{
"input": "11 2",
"output": "7"
},
{
"input": "747 2",
"output": "376"
},
{
"input": "6578 2",
"output": "3293"
},
{
"input": "37212... | 1,637,075,398 | 2,147,483,647 | Python 3 | WRONG_ANSWER | TESTS | 4 | 62 | 0 | def tea_sum(mid, k):
sum = mid
while mid // k > 0:
sum += mid // k
k *= k
return sum
def bin_search(n, k):
left = 0
right = n
mid = 0
while left + 1 < right:
mid = left + (right - left) // 2
if tea_sum(mid, k) >= n:
right = mid
... | Title: Burning Midnight Oil
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
One day a highly important task was commissioned to Vasya — writing a program in a night. The program consists of *n* lines of code. Vasya is already exhausted, so he works like that: first he writes *v* lines of c... | ```python
def tea_sum(mid, k):
sum = mid
while mid // k > 0:
sum += mid // k
k *= k
return sum
def bin_search(n, k):
left = 0
right = n
mid = 0
while left + 1 < right:
mid = left + (right - left) // 2
if tea_sum(mid, k) >= n:
rig... | 0 | MatrixStudio/Codeforces-Python-Submissions | |
841 | A | Generous Kefa | PROGRAMMING | 900 | [
"brute force",
"implementation"
] | null | null | One day Kefa found *n* baloons. For convenience, we denote color of *i*-th baloon as *s**i* — lowercase letter of the Latin alphabet. Also Kefa has *k* friends. Friend will be upset, If he get two baloons of the same color. Kefa want to give out all baloons to his friends. Help Kefa to find out, can he give out all his... | The first line contains two integers *n* and *k* (1<=≤<=*n*,<=*k*<=≤<=100) — the number of baloons and friends.
Next line contains string *s* — colors of baloons. | Answer to the task — «YES» or «NO» in a single line.
You can choose the case (lower or upper) for each letter arbitrary. | [
"4 2\naabb\n",
"6 3\naacaab\n"
] | [
"YES\n",
"NO\n"
] | In the first sample Kefa can give 1-st and 3-rd baloon to the first friend, and 2-nd and 4-th to the second.
In the second sample Kefa needs to give to all his friends baloons of color a, but one baloon will stay, thats why answer is «NO». | 500 | [
{
"input": "4 2\naabb",
"output": "YES"
},
{
"input": "6 3\naacaab",
"output": "NO"
},
{
"input": "2 2\nlu",
"output": "YES"
},
{
"input": "5 3\novvoo",
"output": "YES"
},
{
"input": "36 13\nbzbzcffczzcbcbzzfzbbfzfzzbfbbcbfccbf",
"output": "YES"
},
{
"... | 1,504,714,440 | 2,147,483,647 | Python 3 | WRONG_ANSWER | TESTS | 6 | 61 | 0 | num = list(map(int, input().split()))
s = input()
flag = True
q = sorted(s)
for i in range(len(q) // 2):
if q[i] == q[len(q) - i - 1]:
flag = False
break
if flag:
print("Yes")
else:
print("No") | Title: Generous Kefa
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
One day Kefa found *n* baloons. For convenience, we denote color of *i*-th baloon as *s**i* — lowercase letter of the Latin alphabet. Also Kefa has *k* friends. Friend will be upset, If he get two baloons of the same colo... | ```python
num = list(map(int, input().split()))
s = input()
flag = True
q = sorted(s)
for i in range(len(q) // 2):
if q[i] == q[len(q) - i - 1]:
flag = False
break
if flag:
print("Yes")
else:
print("No")
``` | 0 | MatrixStudio/Codeforces-Python-Submissions | |
0 | none | none | none | 0 | [
"none"
] | null | null | Sasha is taking part in a programming competition. In one of the problems she should check if some rooted trees are isomorphic or not. She has never seen this problem before, but, being an experienced participant, she guessed that she should match trees to some sequences and then compare these sequences instead of tree... | The first line contains a single integer *h* (2<=≤<=*h*<=≤<=105) — the height of the tree.
The second line contains *h*<=+<=1 integers — the sequence *a*0,<=*a*1,<=...,<=*a**h* (1<=≤<=*a**i*<=≤<=2·105). The sum of all *a**i* does not exceed 2·105. It is guaranteed that there is at least one tree matching this sequence... | If there is only one tree matching this sequence, print "perfect".
Otherwise print "ambiguous" in the first line. In the second and in the third line print descriptions of two trees in the following format: in one line print integers, the *k*-th of them should be the parent of vertex *k* or be equal to zero, if the *... | [
"2\n1 1 1\n",
"2\n1 2 2\n"
] | [
"perfect\n",
"ambiguous\n0 1 1 3 3\n0 1 1 3 2\n"
] | The only tree in the first example and the two printed trees from the second example are shown on the picture:
<img class="tex-graphics" src="https://espresso.codeforces.com/ae5d1889e09854f9d8ad6e29ab7afbe690ca4702.png" style="max-width: 100.0%;max-height: 100.0%;"/> | 0 | [
{
"input": "2\n1 1 1",
"output": "perfect"
},
{
"input": "2\n1 2 2",
"output": "ambiguous\n0 1 1 3 3\n0 1 1 3 2"
},
{
"input": "10\n1 1 1 1 1 1 1 1 1 1 1",
"output": "perfect"
},
{
"input": "10\n1 1 1 1 1 2 1 1 1 1 1",
"output": "perfect"
},
{
"input": "10\n1 1 1 ... | 1,513,722,943 | 2,147,483,647 | Python 3 | COMPILATION_ERROR | TESTS | 0 | 0 | 0 | #include<bits/stdc++.h>
using namespace std;
#define fore(i, l, r) for(int i = (l); i < (r); ++i)
#define forn(i, n) fore(i, 0, n)
#define fori(i, l, r) fore(i, l, (r) + 1)
#define all(v) (v).begin(), (v).end()
#define pb push_back
#define mp make_pair
#define max1 1000000007
#define fastios iostream::sync_with_stdio(... | Title: none
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Sasha is taking part in a programming competition. In one of the problems she should check if some rooted trees are isomorphic or not. She has never seen this problem before, but, being an experienced participant, she guessed that... | ```python
#include<bits/stdc++.h>
using namespace std;
#define fore(i, l, r) for(int i = (l); i < (r); ++i)
#define forn(i, n) fore(i, 0, n)
#define fori(i, l, r) fore(i, l, (r) + 1)
#define all(v) (v).begin(), (v).end()
#define pb push_back
#define mp make_pair
#define max1 1000000007
#define fastios iostream::sync_w... | -1 | MatrixStudio/Codeforces-Python-Submissions | |
472 | A | Design Tutorial: Learn from Math | PROGRAMMING | 800 | [
"math",
"number theory"
] | null | null | One way to create a task is to learn from math. You can generate some random math statement or modify some theorems to get something new and build a new task from that.
For example, there is a statement called the "Goldbach's conjecture". It says: "each even number no less than four can be expressed as the sum of two ... | The only line contains an integer *n* (12<=≤<=*n*<=≤<=106). | Output two composite integers *x* and *y* (1<=<<=*x*,<=*y*<=<<=*n*) such that *x*<=+<=*y*<==<=*n*. If there are multiple solutions, you can output any of them. | [
"12\n",
"15\n",
"23\n",
"1000000\n"
] | [
"4 8\n",
"6 9\n",
"8 15\n",
"500000 500000\n"
] | In the first example, 12 = 4 + 8 and both 4, 8 are composite numbers. You can output "6 6" or "8 4" as well.
In the second example, 15 = 6 + 9. Note that you can't output "1 14" because 1 is not a composite number. | 500 | [
{
"input": "12",
"output": "4 8"
},
{
"input": "15",
"output": "6 9"
},
{
"input": "23",
"output": "8 15"
},
{
"input": "1000000",
"output": "500000 500000"
},
{
"input": "63874",
"output": "4 63870"
},
{
"input": "14568",
"output": "4 14564"
},
... | 1,669,566,023 | 2,147,483,647 | Python 3 | OK | TESTS | 33 | 62 | 0 |
def number():
return(list(map(int,input().split())))
def strinp():
return(list(input().split()))
c=0
sum=0
i=0
nn=number()
n=nn[0]
if (n%2)==0:
print(4,n-4)
else:
print(9,n-9)
| Title: Design Tutorial: Learn from Math
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
One way to create a task is to learn from math. You can generate some random math statement or modify some theorems to get something new and build a new task from that.
For example, there is a statemen... | ```python
def number():
return(list(map(int,input().split())))
def strinp():
return(list(input().split()))
c=0
sum=0
i=0
nn=number()
n=nn[0]
if (n%2)==0:
print(4,n-4)
else:
print(9,n-9)
``` | 3 | MatrixStudio/Codeforces-Python-Submissions | |
792 | E | Colored Balls | PROGRAMMING | 2,500 | [
"greedy",
"math",
"number theory"
] | null | null | There are *n* boxes with colored balls on the table. Colors are numbered from 1 to *n*. *i*-th box contains *a**i* balls, all of which have color *i*. You have to write a program that will divide all balls into sets such that:
- each ball belongs to exactly one of the sets, - there are no empty sets, - there is no ... | The first line contains one integer number *n* (1<=≤<=*n*<=≤<=500).
The second line contains *n* integer numbers *a*1,<=*a*2,<=... ,<=*a**n* (1<=≤<=*a**i*<=≤<=109). | Print one integer number — the minimum possible number of sets. | [
"3\n4 7 8\n",
"2\n2 7\n"
] | [
"5\n",
"4\n"
] | In the first example the balls can be divided into sets like that: one set with 4 balls of the first color, two sets with 3 and 4 balls, respectively, of the second color, and two sets with 4 balls of the third color. | 0 | [
{
"input": "3\n4 7 8",
"output": "5"
},
{
"input": "2\n2 7",
"output": "4"
},
{
"input": "1\n1",
"output": "1"
},
{
"input": "1\n1000000000",
"output": "1"
},
{
"input": "2\n1000000000 1",
"output": "500000001"
},
{
"input": "2\n9 6",
"output": "5"... | 1,491,275,380 | 2,147,483,647 | Python 3 | TIME_LIMIT_EXCEEDED | TESTS | 6 | 1,000 | 5,529,600 | def divide_into_p(p, a):
q = a // (p+1)
r = a % (p+1)
if r == 0:
return q
elif q + r >= p:
return q+1
else:
return None
def divisible_into_p(p, lst):
lgth = 0
for l in lst:
dp = divide_into_p(p, l)
if dp == None:
return None... | Title: Colored Balls
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
There are *n* boxes with colored balls on the table. Colors are numbered from 1 to *n*. *i*-th box contains *a**i* balls, all of which have color *i*. You have to write a program that will divide all balls into sets such ... | ```python
def divide_into_p(p, a):
q = a // (p+1)
r = a % (p+1)
if r == 0:
return q
elif q + r >= p:
return q+1
else:
return None
def divisible_into_p(p, lst):
lgth = 0
for l in lst:
dp = divide_into_p(p, l)
if dp == None:
r... | 0 | MatrixStudio/Codeforces-Python-Submissions | |
600 | B | Queries about less or equal elements | PROGRAMMING | 1,300 | [
"binary search",
"data structures",
"sortings",
"two pointers"
] | null | null | You are given two arrays of integers *a* and *b*. For each element of the second array *b**j* you should find the number of elements in array *a* that are less than or equal to the value *b**j*. | The first line contains two integers *n*,<=*m* (1<=≤<=*n*,<=*m*<=≤<=2·105) — the sizes of arrays *a* and *b*.
The second line contains *n* integers — the elements of array *a* (<=-<=109<=≤<=*a**i*<=≤<=109).
The third line contains *m* integers — the elements of array *b* (<=-<=109<=≤<=*b**j*<=≤<=109). | Print *m* integers, separated by spaces: the *j*-th of which is equal to the number of such elements in array *a* that are less than or equal to the value *b**j*. | [
"5 4\n1 3 5 7 9\n6 4 2 8\n",
"5 5\n1 2 1 2 5\n3 1 4 1 5\n"
] | [
"3 2 1 4\n",
"4 2 4 2 5\n"
] | none | 0 | [
{
"input": "5 4\n1 3 5 7 9\n6 4 2 8",
"output": "3 2 1 4"
},
{
"input": "5 5\n1 2 1 2 5\n3 1 4 1 5",
"output": "4 2 4 2 5"
},
{
"input": "1 1\n-1\n-2",
"output": "0"
},
{
"input": "1 1\n-80890826\n686519510",
"output": "1"
},
{
"input": "11 11\n237468511 -77918754... | 1,680,260,559 | 2,147,483,647 | Python 3 | TIME_LIMIT_EXCEEDED | TESTS | 12 | 2,000 | 19,968,000 | def searchLast(target):
if a[0]>target:
return 0
low = 0
high= len(a)-1
ans=low
while low<=high:
mid = low+(high-low)//2
if a[mid]<=target:
ans = max(ans,mid)
low=mid+1
else:
high=mid-1
return ans+1
n,m=list(map(int,input().split()))
a=list(map(int,input().split()))
a.sort()
b=li... | Title: Queries about less or equal elements
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
You are given two arrays of integers *a* and *b*. For each element of the second array *b**j* you should find the number of elements in array *a* that are less than or equal to the value *b**j*.
In... | ```python
def searchLast(target):
if a[0]>target:
return 0
low = 0
high= len(a)-1
ans=low
while low<=high:
mid = low+(high-low)//2
if a[mid]<=target:
ans = max(ans,mid)
low=mid+1
else:
high=mid-1
return ans+1
n,m=list(map(int,input().split()))
a=list(map(int,input().split()))
a.so... | 0 | MatrixStudio/Codeforces-Python-Submissions | |
946 | A | Partition | PROGRAMMING | 800 | [
"greedy"
] | null | null | You are given a sequence *a* consisting of *n* integers. You may partition this sequence into two sequences *b* and *c* in such a way that every element belongs exactly to one of these sequences.
Let *B* be the sum of elements belonging to *b*, and *C* be the sum of elements belonging to *c* (if some of these sequenc... | The first line contains one integer *n* (1<=≤<=*n*<=≤<=100) — the number of elements in *a*.
The second line contains *n* integers *a*1, *a*2, ..., *a**n* (<=-<=100<=≤<=*a**i*<=≤<=100) — the elements of sequence *a*. | Print the maximum possible value of *B*<=-<=*C*, where *B* is the sum of elements of sequence *b*, and *C* is the sum of elements of sequence *c*. | [
"3\n1 -2 0\n",
"6\n16 23 16 15 42 8\n"
] | [
"3\n",
"120\n"
] | In the first example we may choose *b* = {1, 0}, *c* = { - 2}. Then *B* = 1, *C* = - 2, *B* - *C* = 3.
In the second example we choose *b* = {16, 23, 16, 15, 42, 8}, *c* = {} (an empty sequence). Then *B* = 120, *C* = 0, *B* - *C* = 120. | 0 | [
{
"input": "3\n1 -2 0",
"output": "3"
},
{
"input": "6\n16 23 16 15 42 8",
"output": "120"
},
{
"input": "1\n-1",
"output": "1"
},
{
"input": "100\n-100 -100 -100 -100 -100 -100 -100 -100 -100 -100 -100 -100 -100 -100 -100 -100 -100 -100 -100 -100 -100 -100 -100 -100 -100 -10... | 1,540,472,237 | 2,147,483,647 | Python 3 | RUNTIME_ERROR | TESTS | 0 | 92 | 0 | elements=int(input())
elements=[int(i) for i in input().split()]
c=0
b=0
for i in range(elements):
if elements[i]>=0:
b=b+elements[i]
else:
c=c+elements[i]
total=b-c
print(total) | Title: Partition
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
You are given a sequence *a* consisting of *n* integers. You may partition this sequence into two sequences *b* and *c* in such a way that every element belongs exactly to one of these sequences.
Let *B* be the sum of eleme... | ```python
elements=int(input())
elements=[int(i) for i in input().split()]
c=0
b=0
for i in range(elements):
if elements[i]>=0:
b=b+elements[i]
else:
c=c+elements[i]
total=b-c
print(total)
``` | -1 | MatrixStudio/Codeforces-Python-Submissions | |
128 | A | Statues | PROGRAMMING | 1,500 | [
"dfs and similar"
] | null | null | In this task Anna and Maria play a game with a very unpleasant rival. Anna and Maria are in the opposite squares of a chessboard (8<=×<=8): Anna is in the upper right corner, and Maria is in the lower left one. Apart from them, the board has several statues. Each statue occupies exactly one square. A square that contai... | You are given the 8 strings whose length equals 8, describing the initial position on the board. The first line represents the top row of the board, the next one — for the second from the top, and so on, the last line represents the bottom row. Each character string matches a single cell board in the appropriate row, a... | If Maria wins, print string "WIN". If the statues win, print string "LOSE". | [
".......A\n........\n........\n........\n........\n........\n........\nM.......\n",
".......A\n........\n........\n........\n........\n........\nSS......\nM.......\n",
".......A\n........\n........\n........\n........\n.S......\nS.......\nMS......\n"
] | [
"WIN\n",
"LOSE\n",
"LOSE\n"
] | none | 1,000 | [
{
"input": ".SSSSSSA\n.SSSSSSS\n.SSSSSSS\n.SSSSSSS\n.SSSSSSS\n.SSSSSSS\n.SSSSSSS\nMSSSSSSS",
"output": "WIN"
},
{
"input": "SSSSSSSA\nSSSSSSSS\nSSSSSSSS\nSSSSSSSS\nSSSSSSSS\nSSSSSSSS\nSSSSSSSS\nMSSSSSSS",
"output": "LOSE"
},
{
"input": "SSSSSSSA\n......SS\n.......S\n.......S\n.......S\n.... | 1,558,540,830 | 2,147,483,647 | Python 3 | RUNTIME_ERROR | TESTS | 0 | 186 | 0 | n, k = map(int, input().split())
a = list(map(int, input().split()))
nextround = 0
for i in range(n):
if a[i] > 0 and a[i] >= a[k - 1]:
nextround += 1
print(nextround)
| Title: Statues
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
In this task Anna and Maria play a game with a very unpleasant rival. Anna and Maria are in the opposite squares of a chessboard (8<=×<=8): Anna is in the upper right corner, and Maria is in the lower left one. Apart from them,... | ```python
n, k = map(int, input().split())
a = list(map(int, input().split()))
nextround = 0
for i in range(n):
if a[i] > 0 and a[i] >= a[k - 1]:
nextround += 1
print(nextround)
``` | -1 | MatrixStudio/Codeforces-Python-Submissions | |
676 | B | Pyramid of Glasses | PROGRAMMING | 1,500 | [
"implementation",
"math",
"math"
] | null | null | Mary has just graduated from one well-known University and is now attending celebration party. Students like to dream of a beautiful life, so they used champagne glasses to construct a small pyramid. The height of the pyramid is *n*. The top level consists of only 1 glass, that stands on 2 glasses on the second level (... | The only line of the input contains two integers *n* and *t* (1<=≤<=*n*<=≤<=10,<=0<=≤<=*t*<=≤<=10<=000) — the height of the pyramid and the number of seconds Vlad will be pouring champagne from the bottle. | Print the single integer — the number of completely full glasses after *t* seconds. | [
"3 5\n",
"4 8\n"
] | [
"4\n",
"6\n"
] | In the first sample, the glasses full after 5 seconds are: the top glass, both glasses on the second level and the middle glass at the bottom level. Left and right glasses of the bottom level will be half-empty. | 1,000 | [
{
"input": "3 5",
"output": "4"
},
{
"input": "4 8",
"output": "6"
},
{
"input": "1 1",
"output": "1"
},
{
"input": "10 10000",
"output": "55"
},
{
"input": "1 10000",
"output": "1"
},
{
"input": "10 1",
"output": "1"
},
{
"input": "1 0",
... | 1,595,080,385 | 2,147,483,647 | Python 3 | RUNTIME_ERROR | TESTS | 0 | 77 | 6,656,000 | # your code goes here
n1,k=map(int,input().split())
if(n1==1):
print(1)
else:
print(abs(n-k)+2) | Title: Pyramid of Glasses
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Mary has just graduated from one well-known University and is now attending celebration party. Students like to dream of a beautiful life, so they used champagne glasses to construct a small pyramid. The height of th... | ```python
# your code goes here
n1,k=map(int,input().split())
if(n1==1):
print(1)
else:
print(abs(n-k)+2)
``` | -1 | MatrixStudio/Codeforces-Python-Submissions | |
224 | A | Parallelepiped | PROGRAMMING | 1,100 | [
"brute force",
"geometry",
"math"
] | null | null | You've got a rectangular parallelepiped with integer edge lengths. You know the areas of its three faces that have a common vertex. Your task is to find the sum of lengths of all 12 edges of this parallelepiped. | The first and the single line contains three space-separated integers — the areas of the parallelepiped's faces. The area's values are positive (<=><=0) and do not exceed 104. It is guaranteed that there exists at least one parallelepiped that satisfies the problem statement. | Print a single number — the sum of all edges of the parallelepiped. | [
"1 1 1\n",
"4 6 6\n"
] | [
"12\n",
"28\n"
] | In the first sample the parallelepiped has sizes 1 × 1 × 1, in the second one — 2 × 2 × 3. | 500 | [
{
"input": "1 1 1",
"output": "12"
},
{
"input": "4 6 6",
"output": "28"
},
{
"input": "20 10 50",
"output": "68"
},
{
"input": "9 4 36",
"output": "56"
},
{
"input": "324 9 36",
"output": "184"
},
{
"input": "1333 93 129",
"output": "308"
},
{... | 1,582,428,245 | 2,147,483,647 | Python 3 | OK | TESTS | 27 | 218 | 0 | a, b, c = list(map(int, input().split()))
import math
x = math.sqrt(1.0 * a * b / c)
y = math.sqrt(1.0 * a * c / b)
z = math.sqrt(1.0 * c * b / a)
# print(x, y, z)
print(int(4 * (x + y + z)))
| Title: Parallelepiped
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
You've got a rectangular parallelepiped with integer edge lengths. You know the areas of its three faces that have a common vertex. Your task is to find the sum of lengths of all 12 edges of this parallelepiped.
Input S... | ```python
a, b, c = list(map(int, input().split()))
import math
x = math.sqrt(1.0 * a * b / c)
y = math.sqrt(1.0 * a * c / b)
z = math.sqrt(1.0 * c * b / a)
# print(x, y, z)
print(int(4 * (x + y + z)))
``` | 3 | MatrixStudio/Codeforces-Python-Submissions | |
50 | A | Domino piling | PROGRAMMING | 800 | [
"greedy",
"math"
] | A. Domino piling | 2 | 256 | You are given a rectangular board of *M*<=×<=*N* squares. Also you are given an unlimited number of standard domino pieces of 2<=×<=1 squares. You are allowed to rotate the pieces. You are asked to place as many dominoes as possible on the board so as to meet the following conditions:
1. Each domino completely covers ... | In a single line you are given two integers *M* and *N* — board sizes in squares (1<=≤<=*M*<=≤<=*N*<=≤<=16). | Output one number — the maximal number of dominoes, which can be placed. | [
"2 4\n",
"3 3\n"
] | [
"4\n",
"4\n"
] | none | 500 | [
{
"input": "2 4",
"output": "4"
},
{
"input": "3 3",
"output": "4"
},
{
"input": "1 5",
"output": "2"
},
{
"input": "1 6",
"output": "3"
},
{
"input": "1 15",
"output": "7"
},
{
"input": "1 16",
"output": "8"
},
{
"input": "2 5",
"outpu... | 1,631,122,598 | 2,147,483,647 | Python 3 | WRONG_ANSWER | TESTS | 2 | 124 | 0 | list_board = list(map(int, input().split()))
M=list_board[0]
N=list_board[1]
sans=0
ans=0
if N%2==0:
sans=N/2
else:
sans=(N/2)-0.5
ans=sans*M
if M%2!=0:
ans+=1
ans=round(ans)
print(ans)
| Title: Domino piling
Time Limit: 2 seconds
Memory Limit: 256 megabytes
Problem Description:
You are given a rectangular board of *M*<=×<=*N* squares. Also you are given an unlimited number of standard domino pieces of 2<=×<=1 squares. You are allowed to rotate the pieces. You are asked to place as many dominoes as p... | ```python
list_board = list(map(int, input().split()))
M=list_board[0]
N=list_board[1]
sans=0
ans=0
if N%2==0:
sans=N/2
else:
sans=(N/2)-0.5
ans=sans*M
if M%2!=0:
ans+=1
ans=round(ans)
print(ans)
``` | 0 | MatrixStudio/Codeforces-Python-Submissions |
810 | A | Straight <<A>> | PROGRAMMING | 900 | [
"implementation",
"math"
] | null | null | Noora is a student of one famous high school. It's her final year in school — she is going to study in university next year. However, she has to get an «A» graduation certificate in order to apply to a prestigious one.
In school, where Noora is studying, teachers are putting down marks to the online class register, wh... | The first line contains two integers *n* and *k* (1<=≤<=*n*<=≤<=100,<=1<=≤<=*k*<=≤<=100) denoting the number of marks, received by Noora and the value of highest possible mark.
The second line contains *n* integers *a*1,<=*a*2,<=...,<=*a**n* (1<=≤<=*a**i*<=≤<=*k*) denoting marks received by Noora before Leha's hack. | Print a single integer — minimal number of additional marks, that Leha has to add in order to change Noora's final mark to *k*. | [
"2 10\n8 9\n",
"3 5\n4 4 4\n"
] | [
"4",
"3"
] | Consider the first example testcase.
Maximal mark is 10, Noora received two marks — 8 and 9, so current final mark is 9. To fix it, Leha can add marks [10, 10, 10, 10] (4 marks in total) to the registry, achieving Noora having average mark equal to <img align="middle" class="tex-formula" src="https://espresso.codeforc... | 500 | [
{
"input": "2 10\n8 9",
"output": "4"
},
{
"input": "3 5\n4 4 4",
"output": "3"
},
{
"input": "3 10\n10 8 9",
"output": "3"
},
{
"input": "2 23\n21 23",
"output": "2"
},
{
"input": "5 10\n5 10 10 9 10",
"output": "7"
},
{
"input": "12 50\n18 10 26 22 2... | 1,497,469,684 | 1,684 | Python 3 | OK | TESTS | 106 | 124 | 0 | n,m=map(int,input().split())
l=list(map(int,input().split()))
k=0
while 1 :
if round((sum(l)+k*m)/(n+k))<m :
if ((sum(l)+k*m)/(n+k))%1==0.5 and round(((sum(l)+k*m)/(n+k))-0.5)+1>=m:
break
k=k+1
else :
break
print(k)
| Title: Straight <<A>>
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Noora is a student of one famous high school. It's her final year in school — she is going to study in university next year. However, she has to get an «A» graduation certificate in order to apply to a prestigious one.
... | ```python
n,m=map(int,input().split())
l=list(map(int,input().split()))
k=0
while 1 :
if round((sum(l)+k*m)/(n+k))<m :
if ((sum(l)+k*m)/(n+k))%1==0.5 and round(((sum(l)+k*m)/(n+k))-0.5)+1>=m:
break
k=k+1
else :
break
print(k)
``` | 3 | MatrixStudio/Codeforces-Python-Submissions | |
376 | A | Lever | PROGRAMMING | 900 | [
"implementation",
"math"
] | null | null | You have a description of a lever as string *s*. We'll represent the string length as record |*s*|, then the lever looks as a horizontal bar with weights of length |*s*|<=-<=1 with exactly one pivot. We will assume that the bar is a segment on the *Ox* axis between points 0 and |*s*|<=-<=1.
The decoding of the lever d... | The first line contains the lever description as a non-empty string *s* (3<=≤<=|*s*|<=≤<=106), consisting of digits (1-9) and characters "^" and "=". It is guaranteed that the line contains exactly one character "^". It is guaranteed that the pivot of the lever isn't located in any end of the lever bar.
To solve the p... | Print "left" if the given lever tilts to the left, "right" if it tilts to the right and "balance", if it is in balance. | [
"=^==\n",
"9===^==1\n",
"2==^7==\n",
"41^52==\n"
] | [
"balance\n",
"left\n",
"right\n",
"balance\n"
] | As you solve the problem, you may find the following link useful to better understand how a lever functions: http://en.wikipedia.org/wiki/Lever.
The pictures to the examples: | 500 | [
{
"input": "=^==",
"output": "balance"
},
{
"input": "9===^==1",
"output": "left"
},
{
"input": "2==^7==",
"output": "right"
},
{
"input": "41^52==",
"output": "balance"
},
{
"input": "=^2=4=1===1=",
"output": "right"
},
{
"input": "9=6===5==3=9=1=1^7=... | 1,613,030,701 | 2,147,483,647 | PyPy 3 | OK | TESTS | 60 | 218 | 6,860,800 | s = input()
l=0
r=0
if s[0]=="^":
print("right")
elif s[len(s)-1]=="^":
print("left")
else:
g = s.index("^")
for i in range(g):
if s[i]!="=":
l+=int(s[i])*(g-i)
for i in range(g+1,len(s)):
if s[i]!="=":
r+=int(s[i])*(i-g)
#print(l,r)
if... | Title: Lever
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
You have a description of a lever as string *s*. We'll represent the string length as record |*s*|, then the lever looks as a horizontal bar with weights of length |*s*|<=-<=1 with exactly one pivot. We will assume that the bar i... | ```python
s = input()
l=0
r=0
if s[0]=="^":
print("right")
elif s[len(s)-1]=="^":
print("left")
else:
g = s.index("^")
for i in range(g):
if s[i]!="=":
l+=int(s[i])*(g-i)
for i in range(g+1,len(s)):
if s[i]!="=":
r+=int(s[i])*(i-g)
#print(l,... | 3 | MatrixStudio/Codeforces-Python-Submissions | |
714 | B | Filya and Homework | PROGRAMMING | 1,200 | [
"implementation",
"sortings"
] | null | null | Today, hedgehog Filya went to school for the very first time! Teacher gave him a homework which Filya was unable to complete without your help.
Filya is given an array of non-negative integers *a*1,<=*a*2,<=...,<=*a**n*. First, he pick an integer *x* and then he adds *x* to some elements of the array (no more than onc... | The first line of the input contains an integer *n* (1<=≤<=*n*<=≤<=100<=000) — the number of integers in the Filya's array. The second line contains *n* integers *a*1,<=*a*2,<=...,<=*a**n* (0<=≤<=*a**i*<=≤<=109) — elements of the array. | If it's impossible to make all elements of the array equal using the process given in the problem statement, then print "NO" (without quotes) in the only line of the output. Otherwise print "YES" (without quotes). | [
"5\n1 3 3 2 1\n",
"5\n1 2 3 4 5\n"
] | [
"YES\n",
"NO\n"
] | In the first sample Filya should select *x* = 1, then add it to the first and the last elements of the array and subtract from the second and the third elements. | 1,000 | [
{
"input": "5\n1 3 3 2 1",
"output": "YES"
},
{
"input": "5\n1 2 3 4 5",
"output": "NO"
},
{
"input": "2\n1 2",
"output": "YES"
},
{
"input": "3\n1 2 3",
"output": "YES"
},
{
"input": "3\n1 1 1",
"output": "YES"
},
{
"input": "2\n1 1000000000",
"ou... | 1,636,121,029 | 2,147,483,647 | Python 3 | WRONG_ANSWER | TESTS | 5 | 46 | 4,505,600 | # your code goes here
def makearrayequal (arr):
avg = 0
for i in arr:
avg += i
avg = avg//len(arr)
temp = []
res = 0
for i in range(len(arr)):
if arr[i] >= avg:
temp.append(arr[i] - avg)
if arr[i] != avg:
res = arr[i] - avg
else:
temp.append(avg - arr[i])
for i in temp:
if i != 0 and ... | Title: Filya and Homework
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Today, hedgehog Filya went to school for the very first time! Teacher gave him a homework which Filya was unable to complete without your help.
Filya is given an array of non-negative integers *a*1,<=*a*2,<=...,<=*a... | ```python
# your code goes here
def makearrayequal (arr):
avg = 0
for i in arr:
avg += i
avg = avg//len(arr)
temp = []
res = 0
for i in range(len(arr)):
if arr[i] >= avg:
temp.append(arr[i] - avg)
if arr[i] != avg:
res = arr[i] - avg
else:
temp.append(avg - arr[i])
for i in temp:
if i... | 0 | MatrixStudio/Codeforces-Python-Submissions | |
168 | A | Wizards and Demonstration | PROGRAMMING | 900 | [
"implementation",
"math"
] | null | null | Some country is populated by wizards. They want to organize a demonstration.
There are *n* people living in the city, *x* of them are the wizards who will surely go to the demonstration. Other city people (*n*<=-<=*x* people) do not support the wizards and aren't going to go to the demonstration. We know that the city... | The first line contains three space-separated integers, *n*, *x*, *y* (1<=≤<=*n*,<=*x*,<=*y*<=≤<=104,<=*x*<=≤<=*n*) — the number of citizens in the city, the number of wizards and the percentage the administration needs, correspondingly.
Please note that *y* can exceed 100 percent, that is, the administration wants to... | Print a single integer — the answer to the problem, the minimum number of clones to create, so that the demonstration involved no less than *y* percent of *n* (the real total city population). | [
"10 1 14\n",
"20 10 50\n",
"1000 352 146\n"
] | [
"1\n",
"0\n",
"1108\n"
] | In the first sample it is necessary that at least 14% of 10 people came to the demonstration. As the number of people should be integer, then at least two people should come. There is only one wizard living in the city and he is going to come. That isn't enough, so he needs to create one clone.
In the second sample 1... | 500 | [
{
"input": "10 1 14",
"output": "1"
},
{
"input": "20 10 50",
"output": "0"
},
{
"input": "1000 352 146",
"output": "1108"
},
{
"input": "68 65 20",
"output": "0"
},
{
"input": "78 28 27",
"output": "0"
},
{
"input": "78 73 58",
"output": "0"
},
... | 1,632,858,976 | 2,147,483,647 | Python 3 | OK | TESTS | 43 | 154 | 6,758,400 | n,x,y = map(int, input().split())
# print((y/100)*n)
p = (y/100)*n
if(p-int(p)>0):
p = int(p)+1
if(p-x>0):
print(int(p-x))
else:
print(0) | Title: Wizards and Demonstration
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Some country is populated by wizards. They want to organize a demonstration.
There are *n* people living in the city, *x* of them are the wizards who will surely go to the demonstration. Other city people (*n... | ```python
n,x,y = map(int, input().split())
# print((y/100)*n)
p = (y/100)*n
if(p-int(p)>0):
p = int(p)+1
if(p-x>0):
print(int(p-x))
else:
print(0)
``` | 3 | MatrixStudio/Codeforces-Python-Submissions | |
818 | D | Multicolored Cars | PROGRAMMING | 1,700 | [
"data structures",
"implementation"
] | null | null | Alice and Bob got very bored during a long car trip so they decided to play a game. From the window they can see cars of different colors running past them. Cars are going one after another.
The game rules are like this. Firstly Alice chooses some color *A*, then Bob chooses some color *B* (*A*<=≠<=*B*). After each ca... | The first line contains two integer numbers *n* and *A* (1<=≤<=*n*<=≤<=105,<=1<=≤<=*A*<=≤<=106) – number of cars and the color chosen by Alice.
The second line contains *n* integer numbers *c*1,<=*c*2,<=...,<=*c**n* (1<=≤<=*c**i*<=≤<=106) — colors of the cars that Alice and Bob will encounter in the order of their app... | Output such color *B* (1<=≤<=*B*<=≤<=106) that if Bob chooses it then he will win the game. If there are multiple solutions, print any of them. If there is no such color then print -1.
It is guaranteed that if there exists any solution then there exists solution with (1<=≤<=*B*<=≤<=106). | [
"4 1\n2 1 4 2\n",
"5 2\n2 2 4 5 3\n",
"3 10\n1 2 3\n"
] | [
"2\n",
"-1\n",
"4\n"
] | Let's consider availability of colors in the first example:
- *cnt*<sub class="lower-index">2</sub>(*i*) ≥ *cnt*<sub class="lower-index">1</sub>(*i*) for every *i*, and color 2 can be the answer. - *cnt*<sub class="lower-index">4</sub>(2) < *cnt*<sub class="lower-index">1</sub>(2), so color 4 isn't the winning o... | 0 | [
{
"input": "4 1\n2 1 4 2",
"output": "2"
},
{
"input": "5 2\n2 2 4 5 3",
"output": "-1"
},
{
"input": "3 10\n1 2 3",
"output": "4"
},
{
"input": "1 1\n2",
"output": "3"
},
{
"input": "1 2\n2",
"output": "-1"
},
{
"input": "10 6\n8 5 1 6 6 5 10 6 9 8",
... | 1,498,756,112 | 7,412 | Python 3 | WRONG_ANSWER | TESTS | 6 | 61 | 5,529,600 |
color = {}
cntA, A = [i for i in input().split()]
cntA = int(cntA)
M = [i for i in input().split()]
for i in M:
if color.get(i) == None:
color[i] = 1
else:
color[i] += 1
maxCntB = -1
maxB = ''
for k,v in color.items():
ck = color.get(k)
if (ck > maxCntB) and (k != A):
maxCntB = ck
m... | Title: Multicolored Cars
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Alice and Bob got very bored during a long car trip so they decided to play a game. From the window they can see cars of different colors running past them. Cars are going one after another.
The game rules are like t... | ```python
color = {}
cntA, A = [i for i in input().split()]
cntA = int(cntA)
M = [i for i in input().split()]
for i in M:
if color.get(i) == None:
color[i] = 1
else:
color[i] += 1
maxCntB = -1
maxB = ''
for k,v in color.items():
ck = color.get(k)
if (ck > maxCntB) and (k != A):
maxCntB... | 0 | MatrixStudio/Codeforces-Python-Submissions | |
404 | E | Maze 1D | PROGRAMMING | 2,200 | [
"binary search",
"greedy",
"implementation"
] | null | null | Valera has a strip infinite in both directions and consisting of cells. The cells are numbered by integers. The cell number 0 has a robot.
The robot has instructions — the sequence of moves that he must perform. In one move, the robot moves one cell to the left or one cell to the right, according to instructions. Befo... | The first line contains a sequence of characters without spaces *s*1*s*2... *s**n* (1<=≤<=*n*<=≤<=106), consisting only of letters "L" and "R". If character *s**i* equals "L", then the robot on the *i*-th move must try to move one cell to the left. If the *s**i*-th character equals "R", then the robot on the *i*-th mov... | Print a single integer — the required number of ways. It's guaranteed that this number fits into 64-bit signed integer type. | [
"RR\n",
"RRL\n"
] | [
"1\n",
"1\n"
] | In the first sample Valera mustn't add any obstacles and his finishing cell must be cell 2.
In the second sample, Valera must add an obstacle in cell number 1, and his finishing cell must be cell number - 1. In this case robot skips the first two moves and on the third move he goes straight from the starting cell to ... | 2,500 | [
{
"input": "RR",
"output": "1"
},
{
"input": "RRL",
"output": "1"
},
{
"input": "LLLLLRRRRR",
"output": "5"
},
{
"input": "LLRLLLLRLRRRLRRLLRLL",
"output": "0"
},
{
"input": "LRRLRLLLRRLRRRLLLLLRLLLLLRLLRRRLRRLRRLRLRLRLRLLLRRLRLLLLRLRRLLRLRRRRRLRLLLLRRLLRLLLRLLRRL... | 1,691,925,712 | 2,147,483,647 | PyPy 3-64 | WRONG_ANSWER | TESTS | 0 | 46 | 0 | print("_RANDOM_GUESS_1691925712.8367958")# 1691925712.8368142 | Title: Maze 1D
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Valera has a strip infinite in both directions and consisting of cells. The cells are numbered by integers. The cell number 0 has a robot.
The robot has instructions — the sequence of moves that he must perform. In one move, t... | ```python
print("_RANDOM_GUESS_1691925712.8367958")# 1691925712.8368142
``` | 0 | MatrixStudio/Codeforces-Python-Submissions | |
58 | A | Chat room | PROGRAMMING | 1,000 | [
"greedy",
"strings"
] | A. Chat room | 1 | 256 | Vasya has recently learned to type and log on to the Internet. He immediately entered a chat room and decided to say hello to everybody. Vasya typed the word *s*. It is considered that Vasya managed to say hello if several letters can be deleted from the typed word so that it resulted in the word "hello". For example, ... | The first and only line contains the word *s*, which Vasya typed. This word consisits of small Latin letters, its length is no less that 1 and no more than 100 letters. | If Vasya managed to say hello, print "YES", otherwise print "NO". | [
"ahhellllloou\n",
"hlelo\n"
] | [
"YES\n",
"NO\n"
] | none | 500 | [
{
"input": "ahhellllloou",
"output": "YES"
},
{
"input": "hlelo",
"output": "NO"
},
{
"input": "helhcludoo",
"output": "YES"
},
{
"input": "hehwelloho",
"output": "YES"
},
{
"input": "pnnepelqomhhheollvlo",
"output": "YES"
},
{
"input": "tymbzjyqhymeda... | 1,651,703,191 | 2,147,483,647 | Python 3 | WRONG_ANSWER | TESTS | 1 | 31 | 0 | a= input()
b=['h','e','l','l','o']
c = []
for i in range(len(a)):
if(a[i] in b ):
c.append(a[i])
if(b.index('h')<b.index('e') and b.index('e')<b.index('l') and b.index('l')<b.index('o')and b.count('l')>1):
if(b[b.index('l')]==b[b.index('l')+1]):
print('YES')
else:
print('NO... | Title: Chat room
Time Limit: 1 seconds
Memory Limit: 256 megabytes
Problem Description:
Vasya has recently learned to type and log on to the Internet. He immediately entered a chat room and decided to say hello to everybody. Vasya typed the word *s*. It is considered that Vasya managed to say hello if several letter... | ```python
a= input()
b=['h','e','l','l','o']
c = []
for i in range(len(a)):
if(a[i] in b ):
c.append(a[i])
if(b.index('h')<b.index('e') and b.index('e')<b.index('l') and b.index('l')<b.index('o')and b.count('l')>1):
if(b[b.index('l')]==b[b.index('l')+1]):
print('YES')
else:
... | 0 | MatrixStudio/Codeforces-Python-Submissions |
739 | B | Alyona and a tree | PROGRAMMING | 1,900 | [
"binary search",
"data structures",
"dfs and similar",
"graphs",
"trees"
] | null | null | Alyona has a tree with *n* vertices. The root of the tree is the vertex 1. In each vertex Alyona wrote an positive integer, in the vertex *i* she wrote *a**i*. Moreover, the girl wrote a positive integer to every edge of the tree (possibly, different integers on different edges).
Let's define *dist*(*v*,<=*u*) as the ... | The first line contains single integer *n* (1<=≤<=*n*<=≤<=2·105).
The second line contains *n* integers *a*1,<=*a*2,<=...,<=*a**n* (1<=≤<=*a**i*<=≤<=109) — the integers written in the vertices.
The next (*n*<=-<=1) lines contain two integers each. The *i*-th of these lines contains integers *p**i* and *w**i* (1<=≤<=*... | Print *n* integers — the *i*-th of these numbers should be equal to the number of vertices that the *i*-th vertex controls. | [
"5\n2 5 1 4 6\n1 7\n1 1\n3 5\n3 6\n",
"5\n9 7 8 6 5\n1 1\n2 1\n3 1\n4 1\n"
] | [
"1 0 1 0 0\n",
"4 3 2 1 0\n"
] | In the example test case the vertex 1 controls the vertex 3, the vertex 3 controls the vertex 5 (note that is doesn't mean the vertex 1 controls the vertex 5). | 1,000 | [
{
"input": "5\n2 5 1 4 6\n1 7\n1 1\n3 5\n3 6",
"output": "1 0 1 0 0"
},
{
"input": "5\n9 7 8 6 5\n1 1\n2 1\n3 1\n4 1",
"output": "4 3 2 1 0"
},
{
"input": "1\n1",
"output": "0"
},
{
"input": "2\n1 1\n1 1",
"output": "1 0"
},
{
"input": "10\n40 77 65 14 86 16 2 51 ... | 1,692,609,076 | 2,147,483,647 | PyPy 3-64 | WRONG_ANSWER | TESTS | 0 | 46 | 0 | print("_RANDOM_GUESS_1692609076.5058613")# 1692609076.5058787 | Title: Alyona and a tree
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Alyona has a tree with *n* vertices. The root of the tree is the vertex 1. In each vertex Alyona wrote an positive integer, in the vertex *i* she wrote *a**i*. Moreover, the girl wrote a positive integer to every edge... | ```python
print("_RANDOM_GUESS_1692609076.5058613")# 1692609076.5058787
``` | 0 | MatrixStudio/Codeforces-Python-Submissions | |
224 | A | Parallelepiped | PROGRAMMING | 1,100 | [
"brute force",
"geometry",
"math"
] | null | null | You've got a rectangular parallelepiped with integer edge lengths. You know the areas of its three faces that have a common vertex. Your task is to find the sum of lengths of all 12 edges of this parallelepiped. | The first and the single line contains three space-separated integers — the areas of the parallelepiped's faces. The area's values are positive (<=><=0) and do not exceed 104. It is guaranteed that there exists at least one parallelepiped that satisfies the problem statement. | Print a single number — the sum of all edges of the parallelepiped. | [
"1 1 1\n",
"4 6 6\n"
] | [
"12\n",
"28\n"
] | In the first sample the parallelepiped has sizes 1 × 1 × 1, in the second one — 2 × 2 × 3. | 500 | [
{
"input": "1 1 1",
"output": "12"
},
{
"input": "4 6 6",
"output": "28"
},
{
"input": "20 10 50",
"output": "68"
},
{
"input": "9 4 36",
"output": "56"
},
{
"input": "324 9 36",
"output": "184"
},
{
"input": "1333 93 129",
"output": "308"
},
{... | 1,553,372,067 | 2,147,483,647 | Python 3 | OK | TESTS | 27 | 216 | 0 | a,b,c=map(int,input().split())
f1=[]
for i in range(1,int(a**0.5)+1):
if a%i==0:
f1.append(i)
if i*i!=a:
f1.append(a//i)
for item in f1:
x=item
y=a//item
if b%y==0:
z=b//y
if x*z==c:
break
if c%y==0:
z=c//y
if z*... | Title: Parallelepiped
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
You've got a rectangular parallelepiped with integer edge lengths. You know the areas of its three faces that have a common vertex. Your task is to find the sum of lengths of all 12 edges of this parallelepiped.
Input S... | ```python
a,b,c=map(int,input().split())
f1=[]
for i in range(1,int(a**0.5)+1):
if a%i==0:
f1.append(i)
if i*i!=a:
f1.append(a//i)
for item in f1:
x=item
y=a//item
if b%y==0:
z=b//y
if x*z==c:
break
if c%y==0:
z=c//y
... | 3 | MatrixStudio/Codeforces-Python-Submissions | |
613 | A | Peter and Snow Blower | PROGRAMMING | 1,900 | [
"binary search",
"geometry",
"ternary search"
] | null | null | Peter got a new snow blower as a New Year present. Of course, Peter decided to try it immediately. After reading the instructions he realized that it does not work like regular snow blowing machines. In order to make it work, you need to tie it to some point that it does not cover, and then switch it on. As a result it... | The first line of the input contains three integers — the number of vertices of the polygon *n* (), and coordinates of point *P*.
Each of the next *n* lines contains two integers — coordinates of the vertices of the polygon in the clockwise or counterclockwise order. It is guaranteed that no three consecutive vertices... | Print a single real value number — the area of the region that will be cleared. Your answer will be considered correct if its absolute or relative error does not exceed 10<=-<=6.
Namely: let's assume that your answer is *a*, and the answer of the jury is *b*. The checker program will consider your answer correct, if ... | [
"3 0 0\n0 1\n-1 2\n1 2\n",
"4 1 -1\n0 0\n1 2\n2 0\n1 1\n"
] | [
"12.566370614359172464\n",
"21.991148575128551812\n"
] | In the first sample snow will be removed from that area: | 750 | [
{
"input": "3 0 0\n0 1\n-1 2\n1 2",
"output": "12.566370614359172464"
},
{
"input": "4 1 -1\n0 0\n1 2\n2 0\n1 1",
"output": "21.991148575128551812"
},
{
"input": "3 0 0\n-1 1\n0 3\n1 1",
"output": "25.132741228718344928"
},
{
"input": "3 -4 2\n-3 2\n5 -5\n5 3",
"output": ... | 1,487,714,900 | 2,147,483,647 | Python 3 | OK | TESTS | 60 | 889 | 16,281,600 | from math import *
def dist(a,b,p):
xu = b[0]-a[0]
yu = b[1]-a[1]
xv = p[0]-a[0]
yv = p[1]-a[1]
c1 = xu*xv + yu*yv
c2 = xu*xu + yu*yu
x,y = 0,0
if c1<=0:
x = a[0]-p[0]
y = a[1]-p[1]
elif c2<=c1:
x = b[0]-p[0]
y = b[1]-p[1]
else:
x = a[0] + xu*(c1/c2)-p[0]
y = a[1] + yu*(c1/c2)-p... | Title: Peter and Snow Blower
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Peter got a new snow blower as a New Year present. Of course, Peter decided to try it immediately. After reading the instructions he realized that it does not work like regular snow blowing machines. In order to m... | ```python
from math import *
def dist(a,b,p):
xu = b[0]-a[0]
yu = b[1]-a[1]
xv = p[0]-a[0]
yv = p[1]-a[1]
c1 = xu*xv + yu*yv
c2 = xu*xu + yu*yu
x,y = 0,0
if c1<=0:
x = a[0]-p[0]
y = a[1]-p[1]
elif c2<=c1:
x = b[0]-p[0]
y = b[1]-p[1]
else:
x = a[0] + xu*(c1/c2)-p[0]
y = a[1] + yu... | 3 | MatrixStudio/Codeforces-Python-Submissions | |
540 | A | Combination Lock | PROGRAMMING | 800 | [
"implementation"
] | null | null | Scrooge McDuck keeps his most treasured savings in a home safe with a combination lock. Each time he wants to put there the treasures that he's earned fair and square, he has to open the lock.
The combination lock is represented by *n* rotating disks with digits from 0 to 9 written on them. Scrooge McDuck has to turn ... | The first line contains a single integer *n* (1<=≤<=*n*<=≤<=1000) — the number of disks on the combination lock.
The second line contains a string of *n* digits — the original state of the disks.
The third line contains a string of *n* digits — Scrooge McDuck's combination that opens the lock. | Print a single integer — the minimum number of moves Scrooge McDuck needs to open the lock. | [
"5\n82195\n64723\n"
] | [
"13\n"
] | In the sample he needs 13 moves:
- 1 disk: <img align="middle" class="tex-formula" src="https://espresso.codeforces.com/b8967f65a723782358b93eff9ce69f336817cf70.png" style="max-width: 100.0%;max-height: 100.0%;"/> - 2 disk: <img align="middle" class="tex-formula" src="https://espresso.codeforces.com/07fa58573ece0d32... | 500 | [
{
"input": "5\n82195\n64723",
"output": "13"
},
{
"input": "12\n102021090898\n010212908089",
"output": "16"
},
{
"input": "1\n8\n1",
"output": "3"
},
{
"input": "2\n83\n57",
"output": "7"
},
{
"input": "10\n0728592530\n1362615763",
"output": "27"
},
{
... | 1,644,511,159 | 2,147,483,647 | Python 3 | OK | TESTS | 43 | 46 | 0 | n = int(input())
current_state = input()
combination = input()
moves = 0
for disk in range(n):
num = abs(int(current_state[disk]) - int(combination[disk]))
if num > 5:
num = 10 - num
moves += num
print(moves)
| Title: Combination Lock
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Scrooge McDuck keeps his most treasured savings in a home safe with a combination lock. Each time he wants to put there the treasures that he's earned fair and square, he has to open the lock.
The combination lock is ... | ```python
n = int(input())
current_state = input()
combination = input()
moves = 0
for disk in range(n):
num = abs(int(current_state[disk]) - int(combination[disk]))
if num > 5:
num = 10 - num
moves += num
print(moves)
``` | 3 | MatrixStudio/Codeforces-Python-Submissions |
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