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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
660 | B | Seating On Bus | PROGRAMMING | 1,000 | [
"implementation"
] | null | null | Consider 2*n* rows of the seats in a bus. *n* rows of the seats on the left and *n* rows of the seats on the right. Each row can be filled by two people. So the total capacity of the bus is 4*n*.
Consider that *m* (*m*<=≤<=4*n*) people occupy the seats in the bus. The passengers entering the bus are numbered from 1 to... | The only line contains two integers, *n* and *m* (1<=≤<=*n*<=≤<=100,<=1<=≤<=*m*<=≤<=4*n*) — the number of pairs of rows and the number of passengers. | Print *m* distinct integers from 1 to *m* — the order in which the passengers will get off the bus. | [
"2 7\n",
"9 36\n"
] | [
"5 1 6 2 7 3 4\n",
"19 1 20 2 21 3 22 4 23 5 24 6 25 7 26 8 27 9 28 10 29 11 30 12 31 13 32 14 33 15 34 16 35 17 36 18\n"
] | none | 0 | [
{
"input": "2 7",
"output": "5 1 6 2 7 3 4"
},
{
"input": "9 36",
"output": "19 1 20 2 21 3 22 4 23 5 24 6 25 7 26 8 27 9 28 10 29 11 30 12 31 13 32 14 33 15 34 16 35 17 36 18"
},
{
"input": "1 1",
"output": "1"
},
{
"input": "1 4",
"output": "3 1 4 2"
},
{
"input... | 1,686,788,941 | 2,147,483,647 | PyPy 3-64 | WRONG_ANSWER | TESTS | 2 | 62 | 0 | n,m = map(int,input().split())
start = n*2+1
for i in range(start,min(m,4*n)+1):
print(i,i-start+1,end=' ')
if m&1:
print(start-1) | Title: Seating On Bus
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Consider 2*n* rows of the seats in a bus. *n* rows of the seats on the left and *n* rows of the seats on the right. Each row can be filled by two people. So the total capacity of the bus is 4*n*.
Consider that *m* (*m*<... | ```python
n,m = map(int,input().split())
start = n*2+1
for i in range(start,min(m,4*n)+1):
print(i,i-start+1,end=' ')
if m&1:
print(start-1)
``` | 0 | MatrixStudio/Codeforces-Python-Submissions | |
455 | A | Boredom | PROGRAMMING | 1,500 | [
"dp"
] | null | null | Alex doesn't like boredom. That's why whenever he gets bored, he comes up with games. One long winter evening he came up with a game and decided to play it.
Given a sequence *a* consisting of *n* integers. The player can make several steps. In a single step he can choose an element of the sequence (let's denote it *a*... | The first line contains integer *n* (1<=≤<=*n*<=≤<=105) that shows how many numbers are in Alex's sequence.
The second line contains *n* integers *a*1, *a*2, ..., *a**n* (1<=≤<=*a**i*<=≤<=105). | Print a single integer — the maximum number of points that Alex can earn. | [
"2\n1 2\n",
"3\n1 2 3\n",
"9\n1 2 1 3 2 2 2 2 3\n"
] | [
"2\n",
"4\n",
"10\n"
] | Consider the third test example. At first step we need to choose any element equal to 2. After that step our sequence looks like this [2, 2, 2, 2]. Then we do 4 steps, on each step we choose any element equals to 2. In total we earn 10 points. | 500 | [
{
"input": "2\n1 2",
"output": "2"
},
{
"input": "3\n1 2 3",
"output": "4"
},
{
"input": "9\n1 2 1 3 2 2 2 2 3",
"output": "10"
},
{
"input": "5\n3 3 4 5 4",
"output": "11"
},
{
"input": "5\n5 3 5 3 4",
"output": "16"
},
{
"input": "5\n4 2 3 2 5",
... | 1,668,585,068 | 2,147,483,647 | PyPy 3-64 | OK | TESTS | 47 | 93 | 13,516,800 | n=int(input())
lst=list(map(int,input().split()))
d=max(lst)
l=[0]*d
for i in range(n):
l[lst[i]-1]+=lst[i]
final=max(l[0],l[1])
f=[0]*d
f[0]=l[0]
for i in range(1,d):
final=max(final,l[i]+f[i-2])
f[i]=final
print(final) | Title: Boredom
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Alex doesn't like boredom. That's why whenever he gets bored, he comes up with games. One long winter evening he came up with a game and decided to play it.
Given a sequence *a* consisting of *n* integers. The player can make ... | ```python
n=int(input())
lst=list(map(int,input().split()))
d=max(lst)
l=[0]*d
for i in range(n):
l[lst[i]-1]+=lst[i]
final=max(l[0],l[1])
f=[0]*d
f[0]=l[0]
for i in range(1,d):
final=max(final,l[i]+f[i-2])
f[i]=final
print(final)
``` | 3 | MatrixStudio/Codeforces-Python-Submissions | |
934 | B | A Prosperous Lot | PROGRAMMING | 1,200 | [
"constructive algorithms",
"implementation"
] | null | null | Apart from Nian, there is a daemon named Sui, which terrifies children and causes them to become sick. Parents give their children money wrapped in red packets and put them under the pillow, so that when Sui tries to approach them, it will be driven away by the fairies inside.
Big Banban is hesitating over the amount ... | The first and only line contains an integer *k* (1<=≤<=*k*<=≤<=106) — the desired number of loops. | Output an integer — if no such *n* exists, output -1; otherwise output any such *n*. In the latter case, your output should be a positive decimal integer not exceeding 1018. | [
"2\n",
"6\n"
] | [
"462",
"8080"
] | none | 1,000 | [
{
"input": "2",
"output": "8"
},
{
"input": "6",
"output": "888"
},
{
"input": "3",
"output": "86"
},
{
"input": "4",
"output": "88"
},
{
"input": "5",
"output": "886"
},
{
"input": "1000000",
"output": "-1"
},
{
"input": "1",
"output":... | 1,522,741,014 | 2,147,483,647 | Python 3 | TIME_LIMIT_EXCEEDED | TESTS | 5 | 1,000 | 7,680,000 | k = int(input())
ones = [0, 4, 6, 9]
twos = [8]
ans = ''
if k <= 8:
print('6' * k)
elif int('8' * ((k+1) // 2)) > 10**8:
print(-1)
else:
while k != 0:
if k - 2 >= 0:
k -= 2
ans += '8'
else:
ans += '6'
print(ans) | Title: A Prosperous Lot
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Apart from Nian, there is a daemon named Sui, which terrifies children and causes them to become sick. Parents give their children money wrapped in red packets and put them under the pillow, so that when Sui tries to a... | ```python
k = int(input())
ones = [0, 4, 6, 9]
twos = [8]
ans = ''
if k <= 8:
print('6' * k)
elif int('8' * ((k+1) // 2)) > 10**8:
print(-1)
else:
while k != 0:
if k - 2 >= 0:
k -= 2
ans += '8'
else:
ans += '6'
print(ans)
``` | 0 | MatrixStudio/Codeforces-Python-Submissions | |
803 | D | Magazine Ad | PROGRAMMING | 1,900 | [
"binary search",
"greedy"
] | null | null | The main city magazine offers its readers an opportunity to publish their ads. The format of the ad should be like this:
There are space-separated non-empty words of lowercase and uppercase Latin letters.
There are hyphen characters '-' in some words, their positions set word wrapping points. Word can include more th... | The first line contains number *k* (1<=≤<=*k*<=≤<=105).
The second line contains the text of the ad — non-empty space-separated words of lowercase and uppercase Latin letters and hyphens. Total length of the ad don't exceed 106 characters. | Output minimal width of the ad. | [
"4\ngarage for sa-le\n",
"4\nEdu-ca-tion-al Ro-unds are so fun\n"
] | [
"7\n",
"10\n"
] | Here all spaces are replaced with dots.
In the first example one of possible results after all word wraps looks like this:
The second example: | 0 | [
{
"input": "4\ngarage for sa-le",
"output": "7"
},
{
"input": "4\nEdu-ca-tion-al Ro-unds are so fun",
"output": "10"
},
{
"input": "1\nj",
"output": "1"
},
{
"input": "10\nb",
"output": "1"
},
{
"input": "1\nQGVsfZevMD",
"output": "10"
},
{
"input": "1... | 1,553,134,748 | 4,748 | Python 3 | WRONG_ANSWER | TESTS | 8 | 109 | 409,600 | from heapq import heappop, heappush
n = int(input())
s = input()
rec = []
pre = 0
for i in range(len(s)):
if s[i] == '-':
rec.append(pre + 1)
pre = 0
elif s[i] == ' ':
rec.append(pre + 1)
pre = 0
else:
pre += 1
rec.append(pre)
rec = sorted(rec, reverse=... | Title: Magazine Ad
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
The main city magazine offers its readers an opportunity to publish their ads. The format of the ad should be like this:
There are space-separated non-empty words of lowercase and uppercase Latin letters.
There are hyphen... | ```python
from heapq import heappop, heappush
n = int(input())
s = input()
rec = []
pre = 0
for i in range(len(s)):
if s[i] == '-':
rec.append(pre + 1)
pre = 0
elif s[i] == ' ':
rec.append(pre + 1)
pre = 0
else:
pre += 1
rec.append(pre)
rec = sorted(rec... | 0 | MatrixStudio/Codeforces-Python-Submissions | |
19 | A | World Football Cup | PROGRAMMING | 1,400 | [
"implementation"
] | A. World Football Cup | 2 | 64 | Everyone knows that 2010 FIFA World Cup is being held in South Africa now. By the decision of BFA (Berland's Football Association) next World Cup will be held in Berland. BFA took the decision to change some World Cup regulations:
- the final tournament features *n* teams (*n* is always even) - the first *n*<=/<=2 t... | The first input line contains the only integer *n* (1<=≤<=*n*<=≤<=50) — amount of the teams, taking part in the final tournament of World Cup. The following *n* lines contain the names of these teams, a name is a string of lower-case and upper-case Latin letters, its length doesn't exceed 30 characters. The following *... | Output *n*<=/<=2 lines — names of the teams, which managed to get through to the knockout stage in lexicographical order. Output each name in a separate line. No odd characters (including spaces) are allowed. It's guaranteed that the described regulations help to order the teams without ambiguity. | [
"4\nA\nB\nC\nD\nA-B 1:1\nA-C 2:2\nA-D 1:0\nB-C 1:0\nB-D 0:3\nC-D 0:3\n",
"2\na\nA\na-A 2:1\n"
] | [
"A\nD\n",
"a\n"
] | none | 0 | [
{
"input": "4\nA\nB\nC\nD\nA-B 1:1\nA-C 2:2\nA-D 1:0\nB-C 1:0\nB-D 0:3\nC-D 0:3",
"output": "A\nD"
},
{
"input": "2\na\nA\na-A 2:1",
"output": "a"
},
{
"input": "2\nEULEUbCmfrmqxtzvg\nuHGRmKUhDcxcfqyruwzen\nuHGRmKUhDcxcfqyruwzen-EULEUbCmfrmqxtzvg 13:92",
"output": "EULEUbCmfrmqxtzvg"... | 1,691,808,252 | 2,147,483,647 | Python 3 | RUNTIME_ERROR | TESTS | 0 | 30 | 0 | class Team:
def __init__(self, name):
self.name = name
self.points = 0
self.goals_scored = 0
self.goals_conceded = 0
def update_score(self, goals_scored, goals_conceded):
self.points += 3 if goals_scored > goals_conceded else (1 if goals_scored == goals_conceded ... | Title: World Football Cup
Time Limit: 2 seconds
Memory Limit: 64 megabytes
Problem Description:
Everyone knows that 2010 FIFA World Cup is being held in South Africa now. By the decision of BFA (Berland's Football Association) next World Cup will be held in Berland. BFA took the decision to change some World Cup reg... | ```python
class Team:
def __init__(self, name):
self.name = name
self.points = 0
self.goals_scored = 0
self.goals_conceded = 0
def update_score(self, goals_scored, goals_conceded):
self.points += 3 if goals_scored > goals_conceded else (1 if goals_scored == goals... | -1 | MatrixStudio/Codeforces-Python-Submissions |
999 | B | Reversing Encryption | PROGRAMMING | 900 | [
"implementation"
] | null | null | A string $s$ of length $n$ can be encrypted by the following algorithm:
- iterate over all divisors of $n$ in decreasing order (i.e. from $n$ to $1$), - for each divisor $d$, reverse the substring $s[1 \dots d]$ (i.e. the substring which starts at position $1$ and ends at position $d$).
For example, the above algor... | The first line of input consists of a single integer $n$ ($1 \le n \le 100$) — the length of the string $t$. The second line of input consists of the string $t$. The length of $t$ is $n$, and it consists only of lowercase Latin letters. | Print a string $s$ such that the above algorithm results in $t$. | [
"10\nrocesfedoc\n",
"16\nplmaetwoxesisiht\n",
"1\nz\n"
] | [
"codeforces\n",
"thisisexampletwo\n",
"z\n"
] | The first example is described in the problem statement. | 0 | [
{
"input": "10\nrocesfedoc",
"output": "codeforces"
},
{
"input": "16\nplmaetwoxesisiht",
"output": "thisisexampletwo"
},
{
"input": "1\nz",
"output": "z"
},
{
"input": "2\nir",
"output": "ri"
},
{
"input": "3\nilj",
"output": "jli"
},
{
"input": "4\nj... | 1,620,795,685 | 2,147,483,647 | Python 3 | OK | TESTS | 20 | 62 | 6,963,200 | import sys
import math
def scan(input_type='int'):
if input_type == 'int':
return list(map(int, sys.stdin.readline().strip().split()))
else:
return list(map(str, sys.stdin.readline().strip()))
def devisiors(n):
a = []
for i in range(2, n//2+1):
if n % i == 0:
... | Title: Reversing Encryption
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
A string $s$ of length $n$ can be encrypted by the following algorithm:
- iterate over all divisors of $n$ in decreasing order (i.e. from $n$ to $1$), - for each divisor $d$, reverse the substring $s[1 \dots d]$... | ```python
import sys
import math
def scan(input_type='int'):
if input_type == 'int':
return list(map(int, sys.stdin.readline().strip().split()))
else:
return list(map(str, sys.stdin.readline().strip()))
def devisiors(n):
a = []
for i in range(2, n//2+1):
if n % ... | 3 | MatrixStudio/Codeforces-Python-Submissions | |
237 | A | Free Cash | PROGRAMMING | 1,000 | [
"implementation"
] | null | null | Valera runs a 24/7 fast food cafe. He magically learned that next day *n* people will visit his cafe. For each person we know the arrival time: the *i*-th person comes exactly at *h**i* hours *m**i* minutes. The cafe spends less than a minute to serve each client, but if a client comes in and sees that there is no free... | The first line contains a single integer *n* (1<=≤<=*n*<=≤<=105), that is the number of cafe visitors.
Each of the following *n* lines has two space-separated integers *h**i* and *m**i* (0<=≤<=*h**i*<=≤<=23; 0<=≤<=*m**i*<=≤<=59), representing the time when the *i*-th person comes into the cafe.
Note that the time is... | Print a single integer — the minimum number of cashes, needed to serve all clients next day. | [
"4\n8 0\n8 10\n8 10\n8 45\n",
"3\n0 12\n10 11\n22 22\n"
] | [
"2\n",
"1\n"
] | In the first sample it is not enough one cash to serve all clients, because two visitors will come into cafe in 8:10. Therefore, if there will be one cash in cafe, then one customer will be served by it, and another one will not wait and will go away.
In the second sample all visitors will come in different times, so ... | 500 | [
{
"input": "4\n8 0\n8 10\n8 10\n8 45",
"output": "2"
},
{
"input": "3\n0 12\n10 11\n22 22",
"output": "1"
},
{
"input": "5\n12 8\n15 27\n15 27\n16 2\n19 52",
"output": "2"
},
{
"input": "7\n5 6\n7 34\n7 34\n7 34\n12 29\n15 19\n20 23",
"output": "3"
},
{
"input": "... | 1,687,773,978 | 2,147,483,647 | Python 3 | WRONG_ANSWER | TESTS | 6 | 62 | 0 | n = int(input())
a = set()
ans = 1
for _ in range(n):
hi, mi = map(int, input().split())
val = hi*60 + mi
if val in a:
ans += 1
a.add(val)
print(ans)
| Title: Free Cash
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Valera runs a 24/7 fast food cafe. He magically learned that next day *n* people will visit his cafe. For each person we know the arrival time: the *i*-th person comes exactly at *h**i* hours *m**i* minutes. The cafe spends l... | ```python
n = int(input())
a = set()
ans = 1
for _ in range(n):
hi, mi = map(int, input().split())
val = hi*60 + mi
if val in a:
ans += 1
a.add(val)
print(ans)
``` | 0 | MatrixStudio/Codeforces-Python-Submissions | |
22 | A | Second Order Statistics | PROGRAMMING | 800 | [
"brute force"
] | A. Second Order Statistics | 2 | 256 | Once Bob needed to find the second order statistics of a sequence of integer numbers. Lets choose each number from the sequence exactly once and sort them. The value on the second position is the second order statistics of the given sequence. In other words it is the smallest element strictly greater than the minimum. ... | The first input line contains integer *n* (1<=≤<=*n*<=≤<=100) — amount of numbers in the sequence. The second line contains *n* space-separated integer numbers — elements of the sequence. These numbers don't exceed 100 in absolute value. | If the given sequence has the second order statistics, output this order statistics, otherwise output NO. | [
"4\n1 2 2 -4\n",
"5\n1 2 3 1 1\n"
] | [
"1\n",
"2\n"
] | none | 0 | [
{
"input": "4\n1 2 2 -4",
"output": "1"
},
{
"input": "5\n1 2 3 1 1",
"output": "2"
},
{
"input": "1\n28",
"output": "NO"
},
{
"input": "2\n-28 12",
"output": "12"
},
{
"input": "3\n-83 40 -80",
"output": "-80"
},
{
"input": "8\n93 77 -92 26 21 -48 53 ... | 1,684,727,364 | 2,147,483,647 | Python 3 | WRONG_ANSWER | TESTS | 1 | 92 | 0 | n=int(input())
l=list(map(int,input().split()))
l.sort()
m=[*set(l)]
print(l[1]) | Title: Second Order Statistics
Time Limit: 2 seconds
Memory Limit: 256 megabytes
Problem Description:
Once Bob needed to find the second order statistics of a sequence of integer numbers. Lets choose each number from the sequence exactly once and sort them. The value on the second position is the second order statis... | ```python
n=int(input())
l=list(map(int,input().split()))
l.sort()
m=[*set(l)]
print(l[1])
``` | 0 | MatrixStudio/Codeforces-Python-Submissions |
385 | A | Bear and Raspberry | PROGRAMMING | 1,000 | [
"brute force",
"greedy",
"implementation"
] | null | null | The bear decided to store some raspberry for the winter. He cunningly found out the price for a barrel of honey in kilos of raspberry for each of the following *n* days. According to the bear's data, on the *i*-th (1<=≤<=*i*<=≤<=*n*) day, the price for one barrel of honey is going to is *x**i* kilos of raspberry.
Unfo... | The first line contains two space-separated integers, *n* and *c* (2<=≤<=*n*<=≤<=100,<=0<=≤<=*c*<=≤<=100), — the number of days and the number of kilos of raspberry that the bear should give for borrowing the barrel.
The second line contains *n* space-separated integers *x*1,<=*x*2,<=...,<=*x**n* (0<=≤<=*x**i*<=≤<=100... | Print a single integer — the answer to the problem. | [
"5 1\n5 10 7 3 20\n",
"6 2\n100 1 10 40 10 40\n",
"3 0\n1 2 3\n"
] | [
"3\n",
"97\n",
"0\n"
] | In the first sample the bear will lend a honey barrel at day 3 and then sell it for 7. Then the bear will buy a barrel for 3 and return it to the friend. So, the profit is (7 - 3 - 1) = 3.
In the second sample bear will lend a honey barrel at day 1 and then sell it for 100. Then the bear buy the barrel for 1 at the da... | 500 | [
{
"input": "5 1\n5 10 7 3 20",
"output": "3"
},
{
"input": "6 2\n100 1 10 40 10 40",
"output": "97"
},
{
"input": "3 0\n1 2 3",
"output": "0"
},
{
"input": "2 0\n2 1",
"output": "1"
},
{
"input": "10 5\n10 1 11 2 12 3 13 4 14 5",
"output": "4"
},
{
"in... | 1,575,575,236 | 2,147,483,647 | PyPy 3 | WRONG_ANSWER | TESTS | 2 | 124 | 0 | n=input().split()
p=input().split()
k=[]
for i in range(len(p)-1):
s=int(p[i])-int(p[i+1])
k.append(s)
print(max(k)-int(n[1])) | Title: Bear and Raspberry
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
The bear decided to store some raspberry for the winter. He cunningly found out the price for a barrel of honey in kilos of raspberry for each of the following *n* days. According to the bear's data, on the *i*-th (1... | ```python
n=input().split()
p=input().split()
k=[]
for i in range(len(p)-1):
s=int(p[i])-int(p[i+1])
k.append(s)
print(max(k)-int(n[1]))
``` | 0 | MatrixStudio/Codeforces-Python-Submissions | |
785 | A | Anton and Polyhedrons | PROGRAMMING | 800 | [
"implementation",
"strings"
] | null | null | Anton's favourite geometric figures are regular polyhedrons. Note that there are five kinds of regular polyhedrons:
- Tetrahedron. Tetrahedron has 4 triangular faces. - Cube. Cube has 6 square faces. - Octahedron. Octahedron has 8 triangular faces. - Dodecahedron. Dodecahedron has 12 pentagonal faces. - Icosahed... | The first line of the input contains a single integer *n* (1<=≤<=*n*<=≤<=200<=000) — the number of polyhedrons in Anton's collection.
Each of the following *n* lines of the input contains a string *s**i* — the name of the *i*-th polyhedron in Anton's collection. The string can look like this:
- "Tetrahedron" (withou... | Output one number — the total number of faces in all the polyhedrons in Anton's collection. | [
"4\nIcosahedron\nCube\nTetrahedron\nDodecahedron\n",
"3\nDodecahedron\nOctahedron\nOctahedron\n"
] | [
"42\n",
"28\n"
] | In the first sample Anton has one icosahedron, one cube, one tetrahedron and one dodecahedron. Icosahedron has 20 faces, cube has 6 faces, tetrahedron has 4 faces and dodecahedron has 12 faces. In total, they have 20 + 6 + 4 + 12 = 42 faces. | 500 | [
{
"input": "4\nIcosahedron\nCube\nTetrahedron\nDodecahedron",
"output": "42"
},
{
"input": "3\nDodecahedron\nOctahedron\nOctahedron",
"output": "28"
},
{
"input": "25\nIcosahedron\nOctahedron\nTetrahedron\nDodecahedron\nCube\nIcosahedron\nOctahedron\nCube\nTetrahedron\nIcosahedron\nIcosa... | 1,685,360,290 | 2,147,483,647 | PyPy 3-64 | OK | TESTS | 30 | 1,060 | 9,216,000 | t = int(input())
n = 0
while t > 0:
s = input()
if s == "Tetrahedron":
n = n + 4
elif s == "Cube":
n = n + 6
elif s == "Octahedron":
n = n + 8
elif s == "Dodecahedron":
n = n + 12
elif s == "Icosahedron":
n = n + 20
t = t - 1
print(n) | Title: Anton and Polyhedrons
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Anton's favourite geometric figures are regular polyhedrons. Note that there are five kinds of regular polyhedrons:
- Tetrahedron. Tetrahedron has 4 triangular faces. - Cube. Cube has 6 square faces. - Octahe... | ```python
t = int(input())
n = 0
while t > 0:
s = input()
if s == "Tetrahedron":
n = n + 4
elif s == "Cube":
n = n + 6
elif s == "Octahedron":
n = n + 8
elif s == "Dodecahedron":
n = n + 12
elif s == "Icosahedron":
n = n + 20
t = t - 1
p... | 3 | MatrixStudio/Codeforces-Python-Submissions | |
367 | A | Sereja and Algorithm | PROGRAMMING | 1,500 | [
"data structures",
"implementation"
] | null | null | Sereja loves all sorts of algorithms. He has recently come up with a new algorithm, which receives a string as an input. Let's represent the input string of the algorithm as *q*<==<=*q*1*q*2... *q**k*. The algorithm consists of two steps:
1. Find any continuous subsequence (substring) of three characters of string *q... | The first line contains non-empty string *s*, its length (*n*) doesn't exceed 105. It is guaranteed that string *s* only contains characters: 'x', 'y', 'z'.
The second line contains integer *m* (1<=≤<=*m*<=≤<=105) — the number of tests. Next *m* lines contain the tests. The *i*-th line contains a pair of integers *l**... | For each test, print "YES" (without the quotes) if the algorithm works correctly on the corresponding test and "NO" (without the quotes) otherwise. | [
"zyxxxxxxyyz\n5\n5 5\n1 3\n1 11\n1 4\n3 6\n"
] | [
"YES\nYES\nNO\nYES\nNO\n"
] | In the first example, in test one and two the algorithm will always be terminated in one step. In the fourth test you can get string "xzyx" on which the algorithm will terminate. In all other tests the algorithm doesn't work correctly. | 500 | [
{
"input": "zyxxxxxxyyz\n5\n5 5\n1 3\n1 11\n1 4\n3 6",
"output": "YES\nYES\nNO\nYES\nNO"
},
{
"input": "yxzyzxzzxyyzzxxxzyyzzyzxxzxyzyyzxyzxyxxyzxyxzyzxyzxyyxzzzyzxyyxyzxxy\n10\n17 67\n6 35\n12 45\n56 56\n14 30\n25 54\n1 1\n46 54\n3 33\n19 40",
"output": "NO\nNO\nNO\nYES\nYES\nNO\nYES\nNO\nNO\nY... | 1,587,291,238 | 2,147,483,647 | PyPy 3 | WRONG_ANSWER | TESTS | 2 | 140 | 0 | s=input()
hs=[]
hs.append([0,0,0])
for i in range(len(s)):
if s[i]=='x':
hs.append([hs[i][0]+1,hs[i][1],hs[i][2]])
if s[i]=='y':
hs.append([hs[i][0],hs[i][1]+1,hs[i][2]])
if s[i]=='z':
hs.append([hs[i][0],hs[i][1],hs[i][2]+1])
n=int(input())
for i in range(n):
np=[]
... | Title: Sereja and Algorithm
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Sereja loves all sorts of algorithms. He has recently come up with a new algorithm, which receives a string as an input. Let's represent the input string of the algorithm as *q*<==<=*q*1*q*2... *q**k*. The algorit... | ```python
s=input()
hs=[]
hs.append([0,0,0])
for i in range(len(s)):
if s[i]=='x':
hs.append([hs[i][0]+1,hs[i][1],hs[i][2]])
if s[i]=='y':
hs.append([hs[i][0],hs[i][1]+1,hs[i][2]])
if s[i]=='z':
hs.append([hs[i][0],hs[i][1],hs[i][2]+1])
n=int(input())
for i in range(n):
... | 0 | MatrixStudio/Codeforces-Python-Submissions | |
352 | A | Jeff and Digits | PROGRAMMING | 1,000 | [
"brute force",
"implementation",
"math"
] | null | null | Jeff's got *n* cards, each card contains either digit 0, or digit 5. Jeff can choose several cards and put them in a line so that he gets some number. What is the largest possible number divisible by 90 Jeff can make from the cards he's got?
Jeff must make the number without leading zero. At that, we assume that numbe... | The first line contains integer *n* (1<=≤<=*n*<=≤<=103). The next line contains *n* integers *a*1, *a*2, ..., *a**n* (*a**i*<==<=0 or *a**i*<==<=5). Number *a**i* represents the digit that is written on the *i*-th card. | In a single line print the answer to the problem — the maximum number, divisible by 90. If you can't make any divisible by 90 number from the cards, print -1. | [
"4\n5 0 5 0\n",
"11\n5 5 5 5 5 5 5 5 0 5 5\n"
] | [
"0\n",
"5555555550\n"
] | In the first test you can make only one number that is a multiple of 90 — 0.
In the second test you can make number 5555555550, it is a multiple of 90. | 500 | [
{
"input": "4\n5 0 5 0",
"output": "0"
},
{
"input": "11\n5 5 5 5 5 5 5 5 0 5 5",
"output": "5555555550"
},
{
"input": "7\n5 5 5 5 5 5 5",
"output": "-1"
},
{
"input": "1\n5",
"output": "-1"
},
{
"input": "1\n0",
"output": "0"
},
{
"input": "11\n5 0 5 ... | 1,631,798,372 | 2,147,483,647 | PyPy 3 | OK | TESTS | 42 | 186 | 20,172,800 |
def main():
n = int(input())
fives = sum(1 for x in input().split() if x == '5')
zeroes = abs(n - fives)
fives = fives - fives%9
if not zeroes:
print(-1)
elif not fives:
print(0)
else:
print('5'*fives + '0'*zeroes)
main()
| Title: Jeff and Digits
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Jeff's got *n* cards, each card contains either digit 0, or digit 5. Jeff can choose several cards and put them in a line so that he gets some number. What is the largest possible number divisible by 90 Jeff can make fr... | ```python
def main():
n = int(input())
fives = sum(1 for x in input().split() if x == '5')
zeroes = abs(n - fives)
fives = fives - fives%9
if not zeroes:
print(-1)
elif not fives:
print(0)
else:
print('5'*fives + '0'*zeroes)
main()
``` | 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... | 1,644,627,453 | 2,147,483,647 | PyPy 3-64 | OK | TESTS | 61 | 154 | 0 | amt = int(input())
nums = [int(i) for i in input().split()]
amtoftowers = len(set(nums))
dct = {}
for i in nums:
try:
dct[i] += 1
except:
dct[i] = 1
print(max(dct.values()))
print(amtoftowers) | 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
amt = int(input())
nums = [int(i) for i in input().split()]
amtoftowers = len(set(nums))
dct = {}
for i in nums:
try:
dct[i] += 1
except:
dct[i] = 1
print(max(dct.values()))
print(amtoftowers)
``` | 3.9615 | MatrixStudio/Codeforces-Python-Submissions |
686 | A | Free Ice Cream | PROGRAMMING | 800 | [
"constructive algorithms",
"implementation"
] | null | null | After their adventure with the magic mirror Kay and Gerda have returned home and sometimes give free ice cream to kids in the summer.
At the start of the day they have *x* ice cream packs. Since the ice cream is free, people start standing in the queue before Kay and Gerda's house even in the night. Each person in the... | The first line contains two space-separated integers *n* and *x* (1<=≤<=*n*<=≤<=1000, 0<=≤<=*x*<=≤<=109).
Each of the next *n* lines contains a character '+' or '-', and an integer *d**i*, separated by a space (1<=≤<=*d**i*<=≤<=109). Record "+ *d**i*" in *i*-th line means that a carrier with *d**i* ice cream packs occ... | Print two space-separated integers — number of ice cream packs left after all operations, and number of kids that left the house in distress. | [
"5 7\n+ 5\n- 10\n- 20\n+ 40\n- 20\n",
"5 17\n- 16\n- 2\n- 98\n+ 100\n- 98\n"
] | [
"22 1\n",
"3 2\n"
] | Consider the first sample.
1. Initially Kay and Gerda have 7 packs of ice cream. 1. Carrier brings 5 more, so now they have 12 packs. 1. A kid asks for 10 packs and receives them. There are only 2 packs remaining. 1. Another kid asks for 20 packs. Kay and Gerda do not have them, so the kid goes away distressed. 1.... | 500 | [
{
"input": "5 7\n+ 5\n- 10\n- 20\n+ 40\n- 20",
"output": "22 1"
},
{
"input": "5 17\n- 16\n- 2\n- 98\n+ 100\n- 98",
"output": "3 2"
},
{
"input": "6 1000000000\n+ 1000000000\n+ 1000000000\n+ 1000000000\n+ 1000000000\n+ 1000000000\n+ 1000000000",
"output": "7000000000 0"
},
{
... | 1,612,355,317 | 2,147,483,647 | PyPy 3 | RUNTIME_ERROR | TESTS | 0 | 108 | 2,150,400 | n,x= map(int,input().split())
countangry=0
for i in range (n):
i,g =list(input().split())
g=int(g)
if (i=="+"):
x=x+i
else :
# if exist greater than he want give him else he is upset
if(x>=g):
x=x-i
else:
countangry+=1
#the remai... | Title: Free Ice Cream
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
After their adventure with the magic mirror Kay and Gerda have returned home and sometimes give free ice cream to kids in the summer.
At the start of the day they have *x* ice cream packs. Since the ice cream is free, p... | ```python
n,x= map(int,input().split())
countangry=0
for i in range (n):
i,g =list(input().split())
g=int(g)
if (i=="+"):
x=x+i
else :
# if exist greater than he want give him else he is upset
if(x>=g):
x=x-i
else:
countangry+=1
... | -1 | MatrixStudio/Codeforces-Python-Submissions | |
448 | A | Rewards | PROGRAMMING | 800 | [
"implementation"
] | null | null | Bizon the Champion is called the Champion for a reason.
Bizon the Champion has recently got a present — a new glass cupboard with *n* shelves and he decided to put all his presents there. All the presents can be divided into two types: medals and cups. Bizon the Champion has *a*1 first prize cups, *a*2 second prize c... | The first line contains integers *a*1, *a*2 and *a*3 (0<=≤<=*a*1,<=*a*2,<=*a*3<=≤<=100). The second line contains integers *b*1, *b*2 and *b*3 (0<=≤<=*b*1,<=*b*2,<=*b*3<=≤<=100). The third line contains integer *n* (1<=≤<=*n*<=≤<=100).
The numbers in the lines are separated by single spaces. | Print "YES" (without the quotes) if all the rewards can be put on the shelves in the described manner. Otherwise, print "NO" (without the quotes). | [
"1 1 1\n1 1 1\n4\n",
"1 1 3\n2 3 4\n2\n",
"1 0 0\n1 0 0\n1\n"
] | [
"YES\n",
"YES\n",
"NO\n"
] | none | 500 | [
{
"input": "1 1 1\n1 1 1\n4",
"output": "YES"
},
{
"input": "1 1 3\n2 3 4\n2",
"output": "YES"
},
{
"input": "1 0 0\n1 0 0\n1",
"output": "NO"
},
{
"input": "0 0 0\n0 0 0\n1",
"output": "YES"
},
{
"input": "100 100 100\n100 100 100\n100",
"output": "YES"
},
... | 1,689,644,080 | 2,147,483,647 | PyPy 3-64 | WRONG_ANSWER | TESTS | 0 | 46 | 0 | print("_RANDOM_GUESS_1689644080.467597")# 1689644080.4676175 | Title: Rewards
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Bizon the Champion is called the Champion for a reason.
Bizon the Champion has recently got a present — a new glass cupboard with *n* shelves and he decided to put all his presents there. All the presents can be divided into ... | ```python
print("_RANDOM_GUESS_1689644080.467597")# 1689644080.4676175
``` | 0 | MatrixStudio/Codeforces-Python-Submissions | |
10 | D | LCIS | PROGRAMMING | 2,800 | [
"dp"
] | D. LCIS | 1 | 256 | This problem differs from one which was on the online contest.
The sequence *a*1,<=*a*2,<=...,<=*a**n* is called increasing, if *a**i*<=<<=*a**i*<=+<=1 for *i*<=<<=*n*.
The sequence *s*1,<=*s*2,<=...,<=*s**k* is called the subsequence of the sequence *a*1,<=*a*2,<=...,<=*a**n*, if there exist such a set of inde... | The first line contains an integer *n* (1<=≤<=*n*<=≤<=500) — the length of the first sequence. The second line contains *n* space-separated integers from the range [0,<=109] — elements of the first sequence. The third line contains an integer *m* (1<=≤<=*m*<=≤<=500) — the length of the second sequence. The fourth line ... | In the first line output *k* — the length of the longest common increasing subsequence. In the second line output the subsequence itself. Separate the elements with a space. If there are several solutions, output any. | [
"7\n2 3 1 6 5 4 6\n4\n1 3 5 6\n",
"5\n1 2 0 2 1\n3\n1 0 1\n"
] | [
"3\n3 5 6 \n",
"2\n0 1 \n"
] | none | 0 | [
{
"input": "7\n2 3 1 6 5 4 6\n4\n1 3 5 6",
"output": "3\n3 5 6 "
},
{
"input": "5\n1 2 0 2 1\n3\n1 0 1",
"output": "2\n0 1 "
},
{
"input": "2\n6 10\n3\n6 3 3",
"output": "1\n6 "
},
{
"input": "1\n7\n2\n7 9",
"output": "1\n7 "
},
{
"input": "3\n37 49 24\n3\n33 5 70... | 1,689,345,841 | 2,147,483,647 | PyPy 3-64 | WRONG_ANSWER | TESTS | 4 | 46 | 0 | n = int(input())
a = list(map(int, input().split()))
m = int(input())
b = list(map(int, input().split()))
dp = [0] * m
path = [-1] * m
for i in a:
now = 0
ind = -1
for j in range(m):
if b[j] < i:
if dp[j] > now:
now = dp[j]
ind = j
if... | Title: LCIS
Time Limit: 1 seconds
Memory Limit: 256 megabytes
Problem Description:
This problem differs from one which was on the online contest.
The sequence *a*1,<=*a*2,<=...,<=*a**n* is called increasing, if *a**i*<=<<=*a**i*<=+<=1 for *i*<=<<=*n*.
The sequence *s*1,<=*s*2,<=...,<=*s**k* is called the sub... | ```python
n = int(input())
a = list(map(int, input().split()))
m = int(input())
b = list(map(int, input().split()))
dp = [0] * m
path = [-1] * m
for i in a:
now = 0
ind = -1
for j in range(m):
if b[j] < i:
if dp[j] > now:
now = dp[j]
ind = j
... | 0 | MatrixStudio/Codeforces-Python-Submissions |
673 | A | Bear and Game | PROGRAMMING | 800 | [
"implementation"
] | null | null | Bear Limak likes watching sports on TV. He is going to watch a game today. The game lasts 90 minutes and there are no breaks.
Each minute can be either interesting or boring. If 15 consecutive minutes are boring then Limak immediately turns TV off.
You know that there will be *n* interesting minutes *t*1,<=*t*2,<=...... | The first line of the input contains one integer *n* (1<=≤<=*n*<=≤<=90) — the number of interesting minutes.
The second line contains *n* integers *t*1,<=*t*2,<=...,<=*t**n* (1<=≤<=*t*1<=<<=*t*2<=<<=... *t**n*<=≤<=90), given in the increasing order. | Print the number of minutes Limak will watch the game. | [
"3\n7 20 88\n",
"9\n16 20 30 40 50 60 70 80 90\n",
"9\n15 20 30 40 50 60 70 80 90\n"
] | [
"35\n",
"15\n",
"90\n"
] | In the first sample, minutes 21, 22, ..., 35 are all boring and thus Limak will turn TV off immediately after the 35-th minute. So, he would watch the game for 35 minutes.
In the second sample, the first 15 minutes are boring.
In the third sample, there are no consecutive 15 boring minutes. So, Limak will watch the w... | 500 | [
{
"input": "3\n7 20 88",
"output": "35"
},
{
"input": "9\n16 20 30 40 50 60 70 80 90",
"output": "15"
},
{
"input": "9\n15 20 30 40 50 60 70 80 90",
"output": "90"
},
{
"input": "30\n6 11 12 15 22 24 30 31 32 33 34 35 40 42 44 45 47 50 53 54 57 58 63 67 75 77 79 81 83 88",
... | 1,494,507,693 | 2,147,483,647 | Python 3 | RUNTIME_ERROR | TESTS | 0 | 30 | 0 | n =int( input())
a = []
for i in range(n):
a.append(int(input()))
if a[0] > 15:
print(15)
exit()
for i in range(n - 1):
if ((a[i+1] - a[i]) > 15):
print(a[i] + 15)
break
elif i == n - 2:
print(a[i + 1] + 15)
| Title: Bear and Game
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Bear Limak likes watching sports on TV. He is going to watch a game today. The game lasts 90 minutes and there are no breaks.
Each minute can be either interesting or boring. If 15 consecutive minutes are boring then Lim... | ```python
n =int( input())
a = []
for i in range(n):
a.append(int(input()))
if a[0] > 15:
print(15)
exit()
for i in range(n - 1):
if ((a[i+1] - a[i]) > 15):
print(a[i] + 15)
break
elif i == n - 2:
print(a[i + 1] + 15)
``` | -1 | MatrixStudio/Codeforces-Python-Submissions | |
236 | A | Boy or Girl | PROGRAMMING | 800 | [
"brute force",
"implementation",
"strings"
] | null | null | Those days, many boys use beautiful girls' photos as avatars in forums. So it is pretty hard to tell the gender of a user at the first glance. Last year, our hero went to a forum and had a nice chat with a beauty (he thought so). After that they talked very often and eventually they became a couple in the network.
Bu... | The first line contains a non-empty string, that contains only lowercase English letters — the user name. This string contains at most 100 letters. | If it is a female by our hero's method, print "CHAT WITH HER!" (without the quotes), otherwise, print "IGNORE HIM!" (without the quotes). | [
"wjmzbmr\n",
"xiaodao\n",
"sevenkplus\n"
] | [
"CHAT WITH HER!\n",
"IGNORE HIM!\n",
"CHAT WITH HER!\n"
] | For the first example. There are 6 distinct characters in "wjmzbmr". These characters are: "w", "j", "m", "z", "b", "r". So wjmzbmr is a female and you should print "CHAT WITH HER!". | 500 | [
{
"input": "wjmzbmr",
"output": "CHAT WITH HER!"
},
{
"input": "xiaodao",
"output": "IGNORE HIM!"
},
{
"input": "sevenkplus",
"output": "CHAT WITH HER!"
},
{
"input": "pezu",
"output": "CHAT WITH HER!"
},
{
"input": "wnemlgppy",
"output": "CHAT WITH HER!"
},... | 1,695,291,804 | 2,147,483,647 | Python 3 | WRONG_ANSWER | TESTS | 0 | 62 | 0 | s = input()
d = []
for i in range(len(s)):
d.append(s[i])
x = set(d)
if len(x) % 2 == 0:
print("CHAT WITH HER")
else:
print("IGNORE HIM")
| Title: Boy or Girl
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Those days, many boys use beautiful girls' photos as avatars in forums. So it is pretty hard to tell the gender of a user at the first glance. Last year, our hero went to a forum and had a nice chat with a beauty (he though... | ```python
s = input()
d = []
for i in range(len(s)):
d.append(s[i])
x = set(d)
if len(x) % 2 == 0:
print("CHAT WITH HER")
else:
print("IGNORE HIM")
``` | 0 | MatrixStudio/Codeforces-Python-Submissions | |
231 | A | Team | PROGRAMMING | 800 | [
"brute force",
"greedy"
] | null | null | One day three best friends Petya, Vasya and Tonya decided to form a team and take part in programming contests. Participants are usually offered several problems during programming contests. Long before the start the friends decided that they will implement a problem if at least two of them are sure about the solution.... | The first input line contains a single integer *n* (1<=≤<=*n*<=≤<=1000) — the number of problems in the contest. Then *n* lines contain three integers each, each integer is either 0 or 1. If the first number in the line equals 1, then Petya is sure about the problem's solution, otherwise he isn't sure. The second numbe... | Print a single integer — the number of problems the friends will implement on the contest. | [
"3\n1 1 0\n1 1 1\n1 0 0\n",
"2\n1 0 0\n0 1 1\n"
] | [
"2\n",
"1\n"
] | In the first sample Petya and Vasya are sure that they know how to solve the first problem and all three of them know how to solve the second problem. That means that they will write solutions for these problems. Only Petya is sure about the solution for the third problem, but that isn't enough, so the friends won't ta... | 500 | [
{
"input": "3\n1 1 0\n1 1 1\n1 0 0",
"output": "2"
},
{
"input": "2\n1 0 0\n0 1 1",
"output": "1"
},
{
"input": "1\n1 0 0",
"output": "0"
},
{
"input": "2\n1 0 0\n1 1 1",
"output": "1"
},
{
"input": "5\n1 0 0\n0 1 0\n1 1 1\n0 0 1\n0 0 0",
"output": "1"
},
... | 1,696,924,173 | 2,147,483,647 | Python 3 | OK | TESTS | 21 | 92 | 0 | w=int(input())
counter=0
for i in range(w):
input_str=input()
views=input_str.split()
v1,v2,v3=map(int,views)
if v1+v2+v3>1:
counter+=1
print(counter)
| Title: Team
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
One day three best friends Petya, Vasya and Tonya decided to form a team and take part in programming contests. Participants are usually offered several problems during programming contests. Long before the start the friends decid... | ```python
w=int(input())
counter=0
for i in range(w):
input_str=input()
views=input_str.split()
v1,v2,v3=map(int,views)
if v1+v2+v3>1:
counter+=1
print(counter)
``` | 3 | MatrixStudio/Codeforces-Python-Submissions | |
373 | A | Collecting Beats is Fun | PROGRAMMING | 900 | [
"implementation"
] | null | null | Cucumber boy is fan of Kyubeat, a famous music game.
Kyubeat has 16 panels for playing arranged in 4<=×<=4 table. When a panel lights up, he has to press that panel.
Each panel has a timing to press (the preffered time when a player should press it), and Cucumber boy is able to press at most *k* panels in a time with... | The first line contains a single integer *k* (1<=≤<=*k*<=≤<=5) — the number of panels Cucumber boy can press with his one hand.
Next 4 lines contain 4 characters each (digits from 1 to 9, or period) — table of panels. If a digit *i* was written on the panel, it means the boy has to press that panel in time *i*. If per... | Output "YES" (without quotes), if he is able to press all the panels in perfect timing. If not, output "NO" (without quotes). | [
"1\n.135\n1247\n3468\n5789\n",
"5\n..1.\n1111\n..1.\n..1.\n",
"1\n....\n12.1\n.2..\n.2..\n"
] | [
"YES\n",
"YES\n",
"NO\n"
] | In the third sample boy cannot press all panels in perfect timing. He can press all the panels in timing in time 1, but he cannot press the panels in time 2 in timing with his two hands. | 500 | [
{
"input": "1\n.135\n1247\n3468\n5789",
"output": "YES"
},
{
"input": "5\n..1.\n1111\n..1.\n..1.",
"output": "YES"
},
{
"input": "1\n....\n12.1\n.2..\n.2..",
"output": "NO"
},
{
"input": "1\n6981\n.527\n4163\n2345",
"output": "YES"
},
{
"input": "5\n9999\n9999\n99... | 1,541,014,281 | 2,147,483,647 | Python 3 | RUNTIME_ERROR | TESTS | 0 | 93 | 0 |
k=input()*2
s=''
for _ in'0'*4:
s+=input()
print('YNEOS'[any(s.count(str(i))>k for i in range(10))::2]) | Title: Collecting Beats is Fun
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Cucumber boy is fan of Kyubeat, a famous music game.
Kyubeat has 16 panels for playing arranged in 4<=×<=4 table. When a panel lights up, he has to press that panel.
Each panel has a timing to press (the preff... | ```python
k=input()*2
s=''
for _ in'0'*4:
s+=input()
print('YNEOS'[any(s.count(str(i))>k for i in range(10))::2])
``` | -1 | MatrixStudio/Codeforces-Python-Submissions | |
630 | L | Cracking the Code | PROGRAMMING | 1,400 | [
"implementation",
"math"
] | null | null | The protection of a popular program developed by one of IT City companies is organized the following way. After installation it outputs a random five digit number which should be sent in SMS to a particular phone number. In response an SMS activation code arrives.
A young hacker Vasya disassembled the program and foun... | The only line of the input contains a positive integer five digit number for which the activation code should be found. | Output exactly 5 digits without spaces between them — the found activation code of the program. | [
"12345\n"
] | [
"71232"
] | none | 0 | [
{
"input": "12345",
"output": "71232"
},
{
"input": "13542",
"output": "84443"
},
{
"input": "71232",
"output": "10151"
},
{
"input": "11111",
"output": "36551"
},
{
"input": "10000",
"output": "00000"
},
{
"input": "99999",
"output": "99999"
},
... | 1,695,242,125 | 2,147,483,647 | Python 3 | WRONG_ANSWER | TESTS | 4 | 31 | 0 | n=int(input())
a=n//10000
b=(n%10000)//1000
c=(n%1000)//100
d=(n%100)//10
e=n%10
f=a*10000+c*1000+e*100+d*10+b
x=f**5
y=x%100000
print(y)
| Title: Cracking the Code
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
The protection of a popular program developed by one of IT City companies is organized the following way. After installation it outputs a random five digit number which should be sent in SMS to a particular phone numb... | ```python
n=int(input())
a=n//10000
b=(n%10000)//1000
c=(n%1000)//100
d=(n%100)//10
e=n%10
f=a*10000+c*1000+e*100+d*10+b
x=f**5
y=x%100000
print(y)
``` | 0 | 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_... | 1,675,649,366 | 2,147,483,647 | Python 3 | OK | TESTS | 81 | 46 | 0 | s = str(input())
c1=0
c2=0
c3=0
c4=0
if len(s)>=5: c4=1
for c in s:
if c in "qwertyuipoasdfghjklzxcvbnm":c1=1
if c in "QWERTYUIOPASDFGHJKLZXCVBNM": c2=1
if c in "1234567890": c3=1
if bool(c1) and bool(c2) and bool(c3) and bool(c4): print("Correct")
else: print("Too weak") | 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 = str(input())
c1=0
c2=0
c3=0
c4=0
if len(s)>=5: c4=1
for c in s:
if c in "qwertyuipoasdfghjklzxcvbnm":c1=1
if c in "QWERTYUIOPASDFGHJKLZXCVBNM": c2=1
if c in "1234567890": c3=1
if bool(c1) and bool(c2) and bool(c3) and bool(c4): print("Correct")
else: print("Too weak")
``` | 3 | MatrixStudio/Codeforces-Python-Submissions | |
370 | A | Rook, Bishop and King | PROGRAMMING | 1,100 | [
"graphs",
"math",
"shortest paths"
] | null | null | Little Petya is learning to play chess. He has already learned how to move a king, a rook and a bishop. Let us remind you the rules of moving chess pieces. A chessboard is 64 square fields organized into an 8<=×<=8 table. A field is represented by a pair of integers (*r*,<=*c*) — the number of the row and the number of... | The input contains four integers *r*1,<=*c*1,<=*r*2,<=*c*2 (1<=≤<=*r*1,<=*c*1,<=*r*2,<=*c*2<=≤<=8) — the coordinates of the starting and the final field. The starting field doesn't coincide with the final one.
You can assume that the chessboard rows are numbered from top to bottom 1 through 8, and the columns are numb... | Print three space-separated integers: the minimum number of moves the rook, the bishop and the king (in this order) is needed to move from field (*r*1,<=*c*1) to field (*r*2,<=*c*2). If a piece cannot make such a move, print a 0 instead of the corresponding number. | [
"4 3 1 6\n",
"5 5 5 6\n"
] | [
"2 1 3\n",
"1 0 1\n"
] | none | 500 | [
{
"input": "4 3 1 6",
"output": "2 1 3"
},
{
"input": "5 5 5 6",
"output": "1 0 1"
},
{
"input": "1 1 8 8",
"output": "2 1 7"
},
{
"input": "1 1 8 1",
"output": "1 0 7"
},
{
"input": "1 1 1 8",
"output": "1 0 7"
},
{
"input": "8 1 1 1",
"output": "... | 1,478,430,559 | 2,147,483,647 | Python 3 | RUNTIME_ERROR | TESTS | 20 | 62 | 307,200 | import math as m
r1, c1, r2, c2 = map(int, input().split())
moves_rook = 0
rook_horizontal, rook_vertical = r1, c1
if c1 == c2 and r1 != r2:
rook_horizontal += r2-r1
moves_rook += 1
elif r1 == r2 and c1 != c2:
rook_horizontal += c2-c1
moves_rook += 1
else:
rook_horizontal += r2-r1
moves_rook +=... | Title: Rook, Bishop and King
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Little Petya is learning to play chess. He has already learned how to move a king, a rook and a bishop. Let us remind you the rules of moving chess pieces. A chessboard is 64 square fields organized into an 8<=×<=... | ```python
import math as m
r1, c1, r2, c2 = map(int, input().split())
moves_rook = 0
rook_horizontal, rook_vertical = r1, c1
if c1 == c2 and r1 != r2:
rook_horizontal += r2-r1
moves_rook += 1
elif r1 == r2 and c1 != c2:
rook_horizontal += c2-c1
moves_rook += 1
else:
rook_horizontal += r2-r1
mov... | -1 | MatrixStudio/Codeforces-Python-Submissions | |
731 | B | Coupons and Discounts | PROGRAMMING | 1,100 | [
"constructive algorithms",
"greedy"
] | null | null | The programming competition season has already started and it's time to train for ICPC. Sereja coaches his teams for a number of year and he knows that to get ready for the training session it's not enough to prepare only problems and editorial. As the training sessions lasts for several hours, teams become hungry. Thu... | The first line of input contains a single integer *n* (1<=≤<=*n*<=≤<=200<=000) — the number of training sessions.
The second line contains *n* integers *a*1, *a*2, ..., *a**n* (0<=≤<=*a**i*<=≤<=10<=000) — the number of teams that will be present on each of the days. | If there is a way to order pizzas using only coupons and discounts and do not buy any extra pizzas on any of the days, then print "YES" (without quotes) in the only line of output. Otherwise, print "NO" (without quotes). | [
"4\n1 2 1 2\n",
"3\n1 0 1\n"
] | [
"YES\n",
"NO\n"
] | In the first sample, Sereja can use one coupon to buy one pizza on the first and the second days, one coupon to buy pizza on the second and the third days and one discount to buy pizzas on the fourth days. This is the only way to order pizzas for this sample.
In the second sample, Sereja can't use neither the coupon n... | 1,000 | [
{
"input": "4\n1 2 1 2",
"output": "YES"
},
{
"input": "3\n1 0 1",
"output": "NO"
},
{
"input": "3\n1 3 1",
"output": "NO"
},
{
"input": "3\n2 0 2",
"output": "YES"
},
{
"input": "1\n179",
"output": "NO"
},
{
"input": "10\n0 0 5 9 9 3 0 0 0 10",
"o... | 1,631,740,130 | 2,147,483,647 | Python 3 | OK | TESTS | 79 | 171 | 20,377,600 | def main():
n = int(input())
pizzas = [int(i) for i in input().split()]
for i in range(n):
# un-normal response
if pizzas[i] < 0:
print('NO')
return
if pizzas[i]%2 == 1:
# pizzas[i] = 0
# affect next day: make it prone for... | Title: Coupons and Discounts
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
The programming competition season has already started and it's time to train for ICPC. Sereja coaches his teams for a number of year and he knows that to get ready for the training session it's not enough to prep... | ```python
def main():
n = int(input())
pizzas = [int(i) for i in input().split()]
for i in range(n):
# un-normal response
if pizzas[i] < 0:
print('NO')
return
if pizzas[i]%2 == 1:
# pizzas[i] = 0
# affect next day: make it... | 3 | MatrixStudio/Codeforces-Python-Submissions | |
255 | A | Greg's Workout | PROGRAMMING | 800 | [
"implementation"
] | null | null | Greg is a beginner bodybuilder. Today the gym coach gave him the training plan. All it had was *n* integers *a*1,<=*a*2,<=...,<=*a**n*. These numbers mean that Greg needs to do exactly *n* exercises today. Besides, Greg should repeat the *i*-th in order exercise *a**i* times.
Greg now only does three types of exercise... | The first line contains integer *n* (1<=≤<=*n*<=≤<=20). The second line contains *n* integers *a*1,<=*a*2,<=...,<=*a**n* (1<=≤<=*a**i*<=≤<=25) — the number of times Greg repeats the exercises. | Print word "chest" (without the quotes), if the chest gets the most exercise, "biceps" (without the quotes), if the biceps gets the most exercise and print "back" (without the quotes) if the back gets the most exercise.
It is guaranteed that the input is such that the answer to the problem is unambiguous. | [
"2\n2 8\n",
"3\n5 1 10\n",
"7\n3 3 2 7 9 6 8\n"
] | [
"biceps\n",
"back\n",
"chest\n"
] | In the first sample Greg does 2 chest, 8 biceps and zero back exercises, so the biceps gets the most exercises.
In the second sample Greg does 5 chest, 1 biceps and 10 back exercises, so the back gets the most exercises.
In the third sample Greg does 18 chest, 12 biceps and 8 back exercises, so the chest gets the mos... | 500 | [
{
"input": "2\n2 8",
"output": "biceps"
},
{
"input": "3\n5 1 10",
"output": "back"
},
{
"input": "7\n3 3 2 7 9 6 8",
"output": "chest"
},
{
"input": "4\n5 6 6 2",
"output": "chest"
},
{
"input": "5\n8 2 2 6 3",
"output": "chest"
},
{
"input": "6\n8 7 ... | 1,655,119,077 | 2,147,483,647 | Python 3 | WRONG_ANSWER | TESTS | 1 | 62 | 0 | input()
chest = 0
biceps = 0
back = 0
count = 0
for exer in input().split():
nummed = int(exer)
if count%3 == 0:
chest += nummed
elif count%3 == 1:
biceps += nummed
else:
back += nummed
count += 1
if chest > biceps:
if chest > back:
print("chest")
else:
print("biceps")
else:
if back > biceps:
pri... | Title: Greg's Workout
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Greg is a beginner bodybuilder. Today the gym coach gave him the training plan. All it had was *n* integers *a*1,<=*a*2,<=...,<=*a**n*. These numbers mean that Greg needs to do exactly *n* exercises today. Besides, Greg ... | ```python
input()
chest = 0
biceps = 0
back = 0
count = 0
for exer in input().split():
nummed = int(exer)
if count%3 == 0:
chest += nummed
elif count%3 == 1:
biceps += nummed
else:
back += nummed
count += 1
if chest > biceps:
if chest > back:
print("chest")
else:
print("biceps")
else:
if back > bic... | 0 | MatrixStudio/Codeforces-Python-Submissions | |
507 | B | Amr and Pins | PROGRAMMING | 1,400 | [
"geometry",
"math"
] | null | null | Amr loves Geometry. One day he came up with a very interesting problem.
Amr has a circle of radius *r* and center in point (*x*,<=*y*). He wants the circle center to be in new position (*x*',<=*y*').
In one step Amr can put a pin to the border of the circle in a certain point, then rotate the circle around that pin b... | Input consists of 5 space-separated integers *r*, *x*, *y*, *x*' *y*' (1<=≤<=*r*<=≤<=105, <=-<=105<=≤<=*x*,<=*y*,<=*x*',<=*y*'<=≤<=105), circle radius, coordinates of original center of the circle and coordinates of destination center of the circle respectively. | Output a single integer — minimum number of steps required to move the center of the circle to the destination point. | [
"2 0 0 0 4\n",
"1 1 1 4 4\n",
"4 5 6 5 6\n"
] | [
"1\n",
"3\n",
"0\n"
] | In the first sample test the optimal way is to put a pin at point (0, 2) and rotate the circle by 180 degrees counter-clockwise (or clockwise, no matter).
<img class="tex-graphics" src="https://espresso.codeforces.com/4e40fd4cc24a2050a0488aa131e6244369328039.png" style="max-width: 100.0%;max-height: 100.0%;"/> | 1,000 | [
{
"input": "2 0 0 0 4",
"output": "1"
},
{
"input": "1 1 1 4 4",
"output": "3"
},
{
"input": "4 5 6 5 6",
"output": "0"
},
{
"input": "10 20 0 40 0",
"output": "1"
},
{
"input": "9 20 0 40 0",
"output": "2"
},
{
"input": "5 -1 -6 -5 1",
"output": "... | 1,695,839,178 | 2,147,483,647 | PyPy 3-64 | OK | TESTS | 37 | 62 | 0 | import math
r, x, y, nx, ny = map(int,input().split())
step = 2*r
d = math.sqrt((nx-x)**2 + (ny-y)**2)
l, r = 0, 10**10
ans = 10**10
while l <= r :
mid = (l+r)//2
cur = step*mid
if(cur + 10**(-9) > d) :
ans = mid
r = mid - 1
else :
l = mid + 1
print(ans) | Title: Amr and Pins
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Amr loves Geometry. One day he came up with a very interesting problem.
Amr has a circle of radius *r* and center in point (*x*,<=*y*). He wants the circle center to be in new position (*x*',<=*y*').
In one step Amr can ... | ```python
import math
r, x, y, nx, ny = map(int,input().split())
step = 2*r
d = math.sqrt((nx-x)**2 + (ny-y)**2)
l, r = 0, 10**10
ans = 10**10
while l <= r :
mid = (l+r)//2
cur = step*mid
if(cur + 10**(-9) > d) :
ans = mid
r = mid - 1
else :
l = mid + 1
print(ans)
`... | 3 | MatrixStudio/Codeforces-Python-Submissions | |
119 | A | Epic Game | PROGRAMMING | 800 | [
"implementation"
] | null | null | Simon and Antisimon play a game. Initially each player receives one fixed positive integer that doesn't change throughout the game. Simon receives number *a* and Antisimon receives number *b*. They also have a heap of *n* stones. The players take turns to make a move and Simon starts. During a move a player should take... | The only string contains space-separated integers *a*, *b* and *n* (1<=≤<=*a*,<=*b*,<=*n*<=≤<=100) — the fixed numbers Simon and Antisimon have received correspondingly and the initial number of stones in the pile. | If Simon wins, print "0" (without the quotes), otherwise print "1" (without the quotes). | [
"3 5 9\n",
"1 1 100\n"
] | [
"0",
"1"
] | The greatest common divisor of two non-negative integers *a* and *b* is such maximum positive integer *k*, that *a* is divisible by *k* without remainder and similarly, *b* is divisible by *k* without remainder. Let *gcd*(*a*, *b*) represent the operation of calculating the greatest common divisor of numbers *a* and *b... | 500 | [
{
"input": "3 5 9",
"output": "0"
},
{
"input": "1 1 100",
"output": "1"
},
{
"input": "23 12 16",
"output": "1"
},
{
"input": "95 26 29",
"output": "1"
},
{
"input": "73 32 99",
"output": "1"
},
{
"input": "1 1 1",
"output": "0"
},
{
"inpu... | 1,619,064,395 | 2,147,483,647 | Python 3 | OK | TESTS | 45 | 124 | 0 | from math import gcd as g
a,b,n=map(int,input().split())
t=1
while n:t=1-t;n-=g(n,b)if t else g(n,a)
print(t) | Title: Epic Game
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Simon and Antisimon play a game. Initially each player receives one fixed positive integer that doesn't change throughout the game. Simon receives number *a* and Antisimon receives number *b*. They also have a heap of *n* sto... | ```python
from math import gcd as g
a,b,n=map(int,input().split())
t=1
while n:t=1-t;n-=g(n,b)if t else g(n,a)
print(t)
``` | 3 | MatrixStudio/Codeforces-Python-Submissions | |
742 | A | Arpa’s hard exam and Mehrdad’s naive cheat | PROGRAMMING | 1,000 | [
"implementation",
"math",
"number theory"
] | null | null | There exists an island called Arpa’s land, some beautiful girls live there, as ugly ones do.
Mehrdad wants to become minister of Arpa’s land. Arpa has prepared an exam. Exam has only one question, given *n*, print the last digit of 1378*n*.
Mehrdad has become quite confused and wants you to help him. Please help, al... | The single line of input contains one integer *n* (0<=<=≤<=<=*n*<=<=≤<=<=109). | Print single integer — the last digit of 1378*n*. | [
"1\n",
"2\n"
] | [
"8",
"4"
] | In the first example, last digit of 1378<sup class="upper-index">1</sup> = 1378 is 8.
In the second example, last digit of 1378<sup class="upper-index">2</sup> = 1378·1378 = 1898884 is 4. | 500 | [
{
"input": "1",
"output": "8"
},
{
"input": "2",
"output": "4"
},
{
"input": "1000",
"output": "6"
},
{
"input": "3",
"output": "2"
},
{
"input": "4",
"output": "6"
},
{
"input": "1000000000",
"output": "6"
},
{
"input": "5",
"output": ... | 1,647,166,183 | 2,147,483,647 | Python 3 | OK | TESTS | 30 | 46 | 0 | arr = [8, 4, 2, 6]
power = int(input())
if power == 0:
print(1)
elif power > 0:
print(arr[(power-1) % 4]) | Title: Arpa’s hard exam and Mehrdad’s naive cheat
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
There exists an island called Arpa’s land, some beautiful girls live there, as ugly ones do.
Mehrdad wants to become minister of Arpa’s land. Arpa has prepared an exam. Exam has only one ques... | ```python
arr = [8, 4, 2, 6]
power = int(input())
if power == 0:
print(1)
elif power > 0:
print(arr[(power-1) % 4])
``` | 3 | MatrixStudio/Codeforces-Python-Submissions | |
678 | A | Johny Likes Numbers | PROGRAMMING | 800 | [
"implementation",
"math"
] | null | null | Johny likes numbers *n* and *k* very much. Now Johny wants to find the smallest integer *x* greater than *n*, so it is divisible by the number *k*. | The only line contains two integers *n* and *k* (1<=≤<=*n*,<=*k*<=≤<=109). | Print the smallest integer *x*<=><=*n*, so it is divisible by the number *k*. | [
"5 3\n",
"25 13\n",
"26 13\n"
] | [
"6\n",
"26\n",
"39\n"
] | none | 0 | [
{
"input": "5 3",
"output": "6"
},
{
"input": "25 13",
"output": "26"
},
{
"input": "26 13",
"output": "39"
},
{
"input": "1 1",
"output": "2"
},
{
"input": "8 8",
"output": "16"
},
{
"input": "14 15",
"output": "15"
},
{
"input": "197 894"... | 1,676,974,851 | 2,147,483,647 | Python 3 | TIME_LIMIT_EXCEEDED | TESTS | 11 | 500 | 0 | n,k=map(int,input().split())
for i in range(n+1,n+k+1):
if i%k==0:
print(i)
break
else:
pass
| Title: Johny Likes Numbers
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Johny likes numbers *n* and *k* very much. Now Johny wants to find the smallest integer *x* greater than *n*, so it is divisible by the number *k*.
Input Specification:
The only line contains two integers *n* and *... | ```python
n,k=map(int,input().split())
for i in range(n+1,n+k+1):
if i%k==0:
print(i)
break
else:
pass
``` | 0 | MatrixStudio/Codeforces-Python-Submissions | |
402 | A | Nuts | PROGRAMMING | 1,100 | [
"greedy",
"math"
] | null | null | You have *a* nuts and lots of boxes. The boxes have a wonderful feature: if you put *x* (*x*<=≥<=0) divisors (the spacial bars that can divide a box) to it, you get a box, divided into *x*<=+<=1 sections.
You are minimalist. Therefore, on the one hand, you are against dividing some box into more than *k* sections. On ... | The first line contains four space-separated integers *k*, *a*, *b*, *v* (2<=≤<=*k*<=≤<=1000; 1<=≤<=*a*,<=*b*,<=*v*<=≤<=1000) — the maximum number of sections in the box, the number of nuts, the number of divisors and the capacity of each section of the box. | Print a single integer — the answer to the problem. | [
"3 10 3 3\n",
"3 10 1 3\n",
"100 100 1 1000\n"
] | [
"2\n",
"3\n",
"1\n"
] | In the first sample you can act like this:
- Put two divisors to the first box. Now the first box has three sections and we can put three nuts into each section. Overall, the first box will have nine nuts. - Do not put any divisors into the second box. Thus, the second box has one section for the last nut.
In the ... | 500 | [
{
"input": "3 10 3 3",
"output": "2"
},
{
"input": "3 10 1 3",
"output": "3"
},
{
"input": "100 100 1 1000",
"output": "1"
},
{
"input": "5 347 20 1",
"output": "327"
},
{
"input": "6 978 10 5",
"output": "186"
},
{
"input": "6 856 50 35",
"output"... | 1,394,986,018 | 2,218 | Python 3 | WRONG_ANSWER | PRETESTS | 5 | 61 | 0 | k,a,b,v=map(int,input().split())
ans=0
while a>0:
if b>=k-1:
ans+=b//(k-1)
a-=k*v*(b//(k-1))
b=b%(k-1)
elif b!=0:
ans+=1
a-=(b+1)*v
b=0
else:
ans+=a//v +(1 if a%v else 0)
a=0
print(ans) | Title: Nuts
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
You have *a* nuts and lots of boxes. The boxes have a wonderful feature: if you put *x* (*x*<=≥<=0) divisors (the spacial bars that can divide a box) to it, you get a box, divided into *x*<=+<=1 sections.
You are minimalist. Ther... | ```python
k,a,b,v=map(int,input().split())
ans=0
while a>0:
if b>=k-1:
ans+=b//(k-1)
a-=k*v*(b//(k-1))
b=b%(k-1)
elif b!=0:
ans+=1
a-=(b+1)*v
b=0
else:
ans+=a//v +(1 if a%v else 0)
a=0
print(ans)
``` | 0 | MatrixStudio/Codeforces-Python-Submissions | |
152 | A | Marks | PROGRAMMING | 900 | [
"implementation"
] | null | null | Vasya, or Mr. Vasily Petrov is a dean of a department in a local university. After the winter exams he got his hands on a group's gradebook.
Overall the group has *n* students. They received marks for *m* subjects. Each student got a mark from 1 to 9 (inclusive) for each subject.
Let's consider a student the best at ... | The first input line contains two integers *n* and *m* (1<=≤<=*n*,<=*m*<=≤<=100) — the number of students and the number of subjects, correspondingly. Next *n* lines each containing *m* characters describe the gradebook. Each character in the gradebook is a number from 1 to 9. Note that the marks in a rows are not sepa... | Print the single number — the number of successful students in the given group. | [
"3 3\n223\n232\n112\n",
"3 5\n91728\n11828\n11111\n"
] | [
"2\n",
"3\n"
] | In the first sample test the student number 1 is the best at subjects 1 and 3, student 2 is the best at subjects 1 and 2, but student 3 isn't the best at any subject.
In the second sample test each student is the best at at least one subject. | 500 | [
{
"input": "3 3\n223\n232\n112",
"output": "2"
},
{
"input": "3 5\n91728\n11828\n11111",
"output": "3"
},
{
"input": "2 2\n48\n27",
"output": "1"
},
{
"input": "2 1\n4\n6",
"output": "1"
},
{
"input": "1 2\n57",
"output": "1"
},
{
"input": "1 1\n5",
... | 1,548,497,697 | 2,147,483,647 | Python 3 | OK | TESTS | 44 | 109 | 0 | '''input
3 5
91728
11828
11111
'''
n, m = map(int, input().split())
maxMarks = [-1 for i in range(m)]
students = []
for _ in range(n):
marks = [int(i) for i in input()]
for index, i in enumerate(marks):
if maxMarks[index] < i:
maxMarks[index] = i
students.append(marks)
succStud = 0
for i in students:
for in... | Title: Marks
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Vasya, or Mr. Vasily Petrov is a dean of a department in a local university. After the winter exams he got his hands on a group's gradebook.
Overall the group has *n* students. They received marks for *m* subjects. Each student ... | ```python
'''input
3 5
91728
11828
11111
'''
n, m = map(int, input().split())
maxMarks = [-1 for i in range(m)]
students = []
for _ in range(n):
marks = [int(i) for i in input()]
for index, i in enumerate(marks):
if maxMarks[index] < i:
maxMarks[index] = i
students.append(marks)
succStud = 0
for i in student... | 3 | MatrixStudio/Codeforces-Python-Submissions | |
337 | A | Puzzles | PROGRAMMING | 900 | [
"greedy"
] | null | null | The end of the school year is near and Ms. Manana, the teacher, will soon have to say goodbye to a yet another class. She decided to prepare a goodbye present for her *n* students and give each of them a jigsaw puzzle (which, as wikipedia states, is a tiling puzzle that requires the assembly of numerous small, often od... | The first line contains space-separated integers *n* and *m* (2<=≤<=*n*<=≤<=*m*<=≤<=50). The second line contains *m* space-separated integers *f*1,<=*f*2,<=...,<=*f**m* (4<=≤<=*f**i*<=≤<=1000) — the quantities of pieces in the puzzles sold in the shop. | Print a single integer — the least possible difference the teacher can obtain. | [
"4 6\n10 12 10 7 5 22\n"
] | [
"5\n"
] | Sample 1. The class has 4 students. The shop sells 6 puzzles. If Ms. Manana buys the first four puzzles consisting of 10, 12, 10 and 7 pieces correspondingly, then the difference between the sizes of the largest and the smallest puzzle will be equal to 5. It is impossible to obtain a smaller difference. Note that the t... | 500 | [
{
"input": "4 6\n10 12 10 7 5 22",
"output": "5"
},
{
"input": "2 2\n4 4",
"output": "0"
},
{
"input": "2 10\n4 5 6 7 8 9 10 11 12 12",
"output": "0"
},
{
"input": "4 5\n818 136 713 59 946",
"output": "759"
},
{
"input": "3 20\n446 852 783 313 549 965 40 88 86 617... | 1,693,403,411 | 2,147,483,647 | PyPy 3-64 | WRONG_ANSWER | TESTS | 1 | 122 | 0 | n, m = map(int, input().split())
f = list(map(int, input().split()))
least = float('inf')
f.sort()
for i in range(1, m-n):
least = min(least, f[n+i-1]-f[i])
print(least) | Title: Puzzles
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
The end of the school year is near and Ms. Manana, the teacher, will soon have to say goodbye to a yet another class. She decided to prepare a goodbye present for her *n* students and give each of them a jigsaw puzzle (which, a... | ```python
n, m = map(int, input().split())
f = list(map(int, input().split()))
least = float('inf')
f.sort()
for i in range(1, m-n):
least = min(least, f[n+i-1]-f[i])
print(least)
``` | 0 | MatrixStudio/Codeforces-Python-Submissions | |
402 | C | Searching for Graph | PROGRAMMING | 1,500 | [
"brute force",
"constructive algorithms",
"graphs"
] | null | null | Let's call an undirected graph of *n* vertices *p*-interesting, if the following conditions fulfill:
- the graph contains exactly 2*n*<=+<=*p* edges; - the graph doesn't contain self-loops and multiple edges; - for any integer *k* (1<=≤<=*k*<=≤<=*n*), any subgraph consisting of *k* vertices contains at most 2*k*<=... | The first line contains a single integer *t* (1<=≤<=*t*<=≤<=5) — the number of tests in the input. Next *t* lines each contains two space-separated integers: *n*, *p* (5<=≤<=*n*<=≤<=24; *p*<=≥<=0; ) — the number of vertices in the graph and the interest value for the appropriate test.
It is guaranteed that the requir... | For each of the *t* tests print 2*n*<=+<=*p* lines containing the description of the edges of a *p*-interesting graph: the *i*-th line must contain two space-separated integers *a**i*,<=*b**i* (1<=≤<=*a**i*,<=*b**i*<=≤<=*n*; *a**i*<=≠<=*b**i*) — two vertices, connected by an edge in the resulting graph. Consider the gr... | [
"1\n6 0\n"
] | [
"1 2\n1 3\n1 4\n1 5\n1 6\n2 3\n2 4\n2 5\n2 6\n3 4\n3 5\n3 6\n"
] | none | 1,500 | [
{
"input": "1\n6 0",
"output": "1 2\n1 3\n1 4\n1 5\n1 6\n2 3\n2 4\n2 5\n2 6\n3 4\n3 5\n3 6"
},
{
"input": "1\n5 0",
"output": "1 2\n1 3\n1 4\n1 5\n2 3\n2 4\n2 5\n3 4\n3 5\n4 5"
},
{
"input": "5\n6 0\n5 0\n7 0\n8 0\n9 0",
"output": "1 2\n1 3\n1 4\n1 5\n1 6\n2 3\n2 4\n2 5\n2 6\n3 4\n3 ... | 1,502,776,648 | 2,147,483,647 | Python 3 | OK | TESTS | 21 | 62 | 4,608,000 | t = int(input())
while(t > 0):
n, p = map(int, input().split())
temp = 2 * n + p
l = 1
r = l + 1
while(temp > 0):
if(r == n + 1):
l += 1
r = l + 1
print(l,r)
r += 1
temp -= 1
t -= 1
| Title: Searching for Graph
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Let's call an undirected graph of *n* vertices *p*-interesting, if the following conditions fulfill:
- the graph contains exactly 2*n*<=+<=*p* edges; - the graph doesn't contain self-loops and multiple edges; - ... | ```python
t = int(input())
while(t > 0):
n, p = map(int, input().split())
temp = 2 * n + p
l = 1
r = l + 1
while(temp > 0):
if(r == n + 1):
l += 1
r = l + 1
print(l,r)
r += 1
temp -= 1
t -= 1
``` | 3 | MatrixStudio/Codeforces-Python-Submissions | |
742 | A | Arpa’s hard exam and Mehrdad’s naive cheat | PROGRAMMING | 1,000 | [
"implementation",
"math",
"number theory"
] | null | null | There exists an island called Arpa’s land, some beautiful girls live there, as ugly ones do.
Mehrdad wants to become minister of Arpa’s land. Arpa has prepared an exam. Exam has only one question, given *n*, print the last digit of 1378*n*.
Mehrdad has become quite confused and wants you to help him. Please help, al... | The single line of input contains one integer *n* (0<=<=≤<=<=*n*<=<=≤<=<=109). | Print single integer — the last digit of 1378*n*. | [
"1\n",
"2\n"
] | [
"8",
"4"
] | In the first example, last digit of 1378<sup class="upper-index">1</sup> = 1378 is 8.
In the second example, last digit of 1378<sup class="upper-index">2</sup> = 1378·1378 = 1898884 is 4. | 500 | [
{
"input": "1",
"output": "8"
},
{
"input": "2",
"output": "4"
},
{
"input": "1000",
"output": "6"
},
{
"input": "3",
"output": "2"
},
{
"input": "4",
"output": "6"
},
{
"input": "1000000000",
"output": "6"
},
{
"input": "5",
"output": ... | 1,683,194,428 | 2,147,483,647 | Python 3 | WRONG_ANSWER | TESTS | 0 | 31 | 0 | sum = (pow(int(input()), 1378));
print (sum);
| Title: Arpa’s hard exam and Mehrdad’s naive cheat
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
There exists an island called Arpa’s land, some beautiful girls live there, as ugly ones do.
Mehrdad wants to become minister of Arpa’s land. Arpa has prepared an exam. Exam has only one ques... | ```python
sum = (pow(int(input()), 1378));
print (sum);
``` | 0 | MatrixStudio/Codeforces-Python-Submissions | |
261 | B | Maxim and Restaurant | PROGRAMMING | 1,900 | [
"dp",
"math",
"probabilities"
] | null | null | Maxim has opened his own restaurant! The restaurant has got a huge table, the table's length is *p* meters.
Maxim has got a dinner party tonight, *n* guests will come to him. Let's index the guests of Maxim's restaurant from 1 to *n*. Maxim knows the sizes of all guests that are going to come to him. The *i*-th guest'... | The first line contains integer *n* (1<=≤<=*n*<=≤<=50) — the number of guests in the restaurant. The next line contains integers *a*1, *a*2, ..., *a**n* (1<=≤<=*a**i*<=≤<=50) — the guests' sizes in meters. The third line contains integer *p* (1<=≤<=*p*<=≤<=50) — the table's length in meters.
The numbers in the lines ... | In a single line print a real number — the answer to the problem. The answer will be considered correct, if the absolute or relative error doesn't exceed 10<=-<=4. | [
"3\n1 2 3\n3\n"
] | [
"1.3333333333\n"
] | In the first sample the people will come in the following orders:
- (1, 2, 3) — there will be two people in the restaurant; - (1, 3, 2) — there will be one person in the restaurant; - (2, 1, 3) — there will be two people in the restaurant; - (2, 3, 1) — there will be one person in the restaurant; - (3, 1, 2) — t... | 1,000 | [
{
"input": "3\n1 2 3\n3",
"output": "1.3333333333"
},
{
"input": "9\n2 2 2 2 2 2 2 1 2\n9",
"output": "4.5555555556"
},
{
"input": "7\n2 1 1 2 1 1 2\n2",
"output": "1.2857142857"
},
{
"input": "8\n3 1 5 6 1 5 4 4\n7",
"output": "1.6250000000"
},
{
"input": "2\n1 3... | 1,589,916,755 | 2,147,483,647 | PyPy 3 | WRONG_ANSWER | TESTS | 0 | 280 | 0 | n = input()
n = int(n)
arr = [0] * n
fact = [0] * 51
a = input().split()
p = input()
p = int(p)
for i in range(n):
arr[i] = int(a[i])
if n == 1:
if arr[0] <= p:
print(1)
else:
print(0)
exit(0)
def pre():
fact[0] = 1
for i in range(1, 51):
fact[i] = fact[i - 1] * i
def get(arr, min... | Title: Maxim and Restaurant
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Maxim has opened his own restaurant! The restaurant has got a huge table, the table's length is *p* meters.
Maxim has got a dinner party tonight, *n* guests will come to him. Let's index the guests of Maxim's rest... | ```python
n = input()
n = int(n)
arr = [0] * n
fact = [0] * 51
a = input().split()
p = input()
p = int(p)
for i in range(n):
arr[i] = int(a[i])
if n == 1:
if arr[0] <= p:
print(1)
else:
print(0)
exit(0)
def pre():
fact[0] = 1
for i in range(1, 51):
fact[i] = fact[i - 1] * i
def ge... | 0 | MatrixStudio/Codeforces-Python-Submissions | |
205 | A | Little Elephant and Rozdil | PROGRAMMING | 900 | [
"brute force",
"implementation"
] | null | null | The Little Elephant loves Ukraine very much. Most of all he loves town Rozdol (ukr. "Rozdil").
However, Rozdil is dangerous to settle, so the Little Elephant wants to go to some other town. The Little Elephant doesn't like to spend much time on travelling, so for his journey he will choose a town that needs minimum ti... | The first line contains a single integer *n* (1<=≤<=*n*<=≤<=105) — the number of cities. The next line contains *n* integers, separated by single spaces: the *i*-th integer represents the time needed to go from town Rozdil to the *i*-th town. The time values are positive integers, not exceeding 109.
You can consider t... | Print the answer on a single line — the number of the town the Little Elephant will go to. If there are multiple cities with minimum travel time, print "Still Rozdil" (without the quotes). | [
"2\n7 4\n",
"7\n7 4 47 100 4 9 12\n"
] | [
"2\n",
"Still Rozdil\n"
] | In the first sample there are only two cities where the Little Elephant can go. The travel time for the first town equals 7, to the second one — 4. The town which is closest to Rodzil (the only one) is the second one, so the answer is 2.
In the second sample the closest cities are cities two and five, the travelling t... | 500 | [
{
"input": "2\n7 4",
"output": "2"
},
{
"input": "7\n7 4 47 100 4 9 12",
"output": "Still Rozdil"
},
{
"input": "1\n47",
"output": "1"
},
{
"input": "2\n1000000000 1000000000",
"output": "Still Rozdil"
},
{
"input": "7\n7 6 5 4 3 2 1",
"output": "7"
},
{
... | 1,656,041,286 | 2,147,483,647 | Python 3 | WRONG_ANSWER | TESTS | 0 | 62 | 0 | numcities=int(input())
cities=list(map(int, input().strip().split()))
citynum = 1
min = 0
min = cities[citynum]
citiesmincount = 1
while True:
citynum = citynum + 1
if citynum == numcities:
break
if min > cities[citynum]:
min = cities[citynum]
citiesmincount = 1
if min == cities[cityn... | Title: Little Elephant and Rozdil
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
The Little Elephant loves Ukraine very much. Most of all he loves town Rozdol (ukr. "Rozdil").
However, Rozdil is dangerous to settle, so the Little Elephant wants to go to some other town. The Little Elepha... | ```python
numcities=int(input())
cities=list(map(int, input().strip().split()))
citynum = 1
min = 0
min = cities[citynum]
citiesmincount = 1
while True:
citynum = citynum + 1
if citynum == numcities:
break
if min > cities[citynum]:
min = cities[citynum]
citiesmincount = 1
if min == ci... | 0 | 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": "... | 1,599,996,484 | 2,147,483,647 | PyPy 3 | OK | TESTS | 102 | 140 | 0 | s=input()
r=input()
l=[]
a=""
for i in range (0,len(s)):
if s[i]!=r[i]:
l.append('1')
else:
l.append('0')
for i in l:
a+=i
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
s=input()
r=input()
l=[]
a=""
for i in range (0,len(s)):
if s[i]!=r[i]:
l.append('1')
else:
l.append('0')
for i in l:
a+=i
print(a)
``` | 3.965 | MatrixStudio/Codeforces-Python-Submissions |
924 | A | Mystical Mosaic | PROGRAMMING | 1,300 | [
"greedy",
"implementation"
] | null | null | There is a rectangular grid of *n* rows of *m* initially-white cells each.
Arkady performed a certain number (possibly zero) of operations on it. In the *i*-th operation, a non-empty subset of rows *R**i* and a non-empty subset of columns *C**i* are chosen. For each row *r* in *R**i* and each column *c* in *C**i*, the... | The first line contains two space-separated integers *n* and *m* (1<=≤<=*n*,<=*m*<=≤<=50) — the number of rows and columns of the grid, respectively.
Each of the following *n* lines contains a string of *m* characters, each being either '.' (denoting a white cell) or '#' (denoting a black cell), representing the desir... | If the given grid can be achieved by any valid sequence of operations, output "Yes"; otherwise output "No" (both without quotes).
You can print each character in any case (upper or lower). | [
"5 8\n.#.#..#.\n.....#..\n.#.#..#.\n#.#....#\n.....#..\n",
"5 5\n..#..\n..#..\n#####\n..#..\n..#..\n",
"5 9\n........#\n#........\n..##.#...\n.......#.\n....#.#.#\n"
] | [
"Yes\n",
"No\n",
"No\n"
] | For the first example, the desired setup can be produced by 3 operations, as is shown below.
For the second example, the desired setup cannot be produced, since in order to colour the center row, the third row and all columns must be selected in one operation, but after that no column can be selected again, hence it w... | 500 | [
{
"input": "5 8\n.#.#..#.\n.....#..\n.#.#..#.\n#.#....#\n.....#..",
"output": "Yes"
},
{
"input": "5 5\n..#..\n..#..\n#####\n..#..\n..#..",
"output": "No"
},
{
"input": "5 9\n........#\n#........\n..##.#...\n.......#.\n....#.#.#",
"output": "No"
},
{
"input": "1 1\n#",
"o... | 1,612,258,132 | 2,147,483,647 | PyPy 3 | OK | TESTS | 50 | 124 | 1,433,600 | n, m = map(int, input().split())
s = [input() for _ in range(n)]
l = []
for i in range(n):
se = set()
for j in range(m):
if s[i][j]=='#':
se.add(j)
for li in l:
if len(se&li)!=0 and se!=li:
print('No')
exit()
l.append(se)
... | Title: Mystical Mosaic
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
There is a rectangular grid of *n* rows of *m* initially-white cells each.
Arkady performed a certain number (possibly zero) of operations on it. In the *i*-th operation, a non-empty subset of rows *R**i* and a non-emp... | ```python
n, m = map(int, input().split())
s = [input() for _ in range(n)]
l = []
for i in range(n):
se = set()
for j in range(m):
if s[i][j]=='#':
se.add(j)
for li in l:
if len(se&li)!=0 and se!=li:
print('No')
exit()
l.a... | 3 | MatrixStudio/Codeforces-Python-Submissions | |
459 | A | Pashmak and Garden | PROGRAMMING | 1,200 | [
"implementation"
] | null | null | Pashmak has fallen in love with an attractive girl called Parmida since one year ago...
Today, Pashmak set up a meeting with his partner in a romantic garden. Unfortunately, Pashmak has forgotten where the garden is. But he remembers that the garden looks like a square with sides parallel to the coordinate axes. He al... | The first line contains four space-separated *x*1,<=*y*1,<=*x*2,<=*y*2 (<=-<=100<=≤<=*x*1,<=*y*1,<=*x*2,<=*y*2<=≤<=100) integers, where *x*1 and *y*1 are coordinates of the first tree and *x*2 and *y*2 are coordinates of the second tree. It's guaranteed that the given points are distinct. | If there is no solution to the problem, print -1. Otherwise print four space-separated integers *x*3,<=*y*3,<=*x*4,<=*y*4 that correspond to the coordinates of the two other trees. If there are several solutions you can output any of them.
Note that *x*3,<=*y*3,<=*x*4,<=*y*4 must be in the range (<=-<=1000<=≤<=*x*3,<... | [
"0 0 0 1\n",
"0 0 1 1\n",
"0 0 1 2\n"
] | [
"1 0 1 1\n",
"0 1 1 0\n",
"-1\n"
] | none | 500 | [
{
"input": "0 0 0 1",
"output": "1 0 1 1"
},
{
"input": "0 0 1 1",
"output": "0 1 1 0"
},
{
"input": "0 0 1 2",
"output": "-1"
},
{
"input": "-100 -100 100 100",
"output": "-100 100 100 -100"
},
{
"input": "-100 -100 99 100",
"output": "-1"
},
{
"input... | 1,669,057,929 | 2,147,483,647 | PyPy 3-64 | WRONG_ANSWER | TESTS | 0 | 46 | 0 | x1,y1,x2,y2=map(int,input().split())
li=[x1,y1,x2,y2]
if len(set(li))>2:print(-1);exit()
d=max(abs((x2)-(x1)),abs((y2)-(y1)))
if int((((x2)-(x1))**2+((y2)-(y1))**2)**0.5)==(((x2)-(x1))**2+((y2)-(y1))**2)**0.5:
if x1==x2:
print(x1,y2,y2,y2)
elif y1==y2:
print(x1,x2,x2,x2)
else:
if l... | Title: Pashmak and Garden
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Pashmak has fallen in love with an attractive girl called Parmida since one year ago...
Today, Pashmak set up a meeting with his partner in a romantic garden. Unfortunately, Pashmak has forgotten where the garden is... | ```python
x1,y1,x2,y2=map(int,input().split())
li=[x1,y1,x2,y2]
if len(set(li))>2:print(-1);exit()
d=max(abs((x2)-(x1)),abs((y2)-(y1)))
if int((((x2)-(x1))**2+((y2)-(y1))**2)**0.5)==(((x2)-(x1))**2+((y2)-(y1))**2)**0.5:
if x1==x2:
print(x1,y2,y2,y2)
elif y1==y2:
print(x1,x2,x2,x2)
else:... | 0 | MatrixStudio/Codeforces-Python-Submissions | |
245 | A | System Administrator | PROGRAMMING | 800 | [
"implementation"
] | null | null | Polycarpus is a system administrator. There are two servers under his strict guidance — *a* and *b*. To stay informed about the servers' performance, Polycarpus executes commands "ping a" and "ping b". Each ping command sends exactly ten packets to the server specified in the argument of the command. Executing a progra... | The first line contains a single integer *n* (2<=≤<=*n*<=≤<=1000) — the number of commands Polycarpus has fulfilled. Each of the following *n* lines contains three integers — the description of the commands. The *i*-th of these lines contains three space-separated integers *t**i*, *x**i*, *y**i* (1<=≤<=*t**i*<=≤<=2; *x... | In the first line print string "LIVE" (without the quotes) if server *a* is "alive", otherwise print "DEAD" (without the quotes).
In the second line print the state of server *b* in the similar format. | [
"2\n1 5 5\n2 6 4\n",
"3\n1 0 10\n2 0 10\n1 10 0\n"
] | [
"LIVE\nLIVE\n",
"LIVE\nDEAD\n"
] | Consider the first test case. There 10 packets were sent to server *a*, 5 of them reached it. Therefore, at least half of all packets sent to this server successfully reached it through the network. Overall there were 10 packets sent to server *b*, 6 of them reached it. Therefore, at least half of all packets sent to t... | 0 | [
{
"input": "2\n1 5 5\n2 6 4",
"output": "LIVE\nLIVE"
},
{
"input": "3\n1 0 10\n2 0 10\n1 10 0",
"output": "LIVE\nDEAD"
},
{
"input": "10\n1 3 7\n2 4 6\n1 2 8\n2 5 5\n2 10 0\n2 10 0\n1 8 2\n2 2 8\n2 10 0\n1 1 9",
"output": "DEAD\nLIVE"
},
{
"input": "11\n1 8 2\n1 6 4\n1 9 1\n1... | 1,569,804,171 | 2,147,483,647 | Python 3 | OK | TESTS | 13 | 248 | 0 | n = int(input())
live_a = 0
dead_a = 0
live_b = 0
dead_b = 0
status_a = False
status_b = False
for i in range(n):
x = list(map(int, input().split()))
if x[0] == 1:
live_a += x[1]
dead_a += x[2]
else:
live_b += x[1]
dead_b += x[2]
if live_a >= dead_a:
status_a = True
if live_b >= dead_b:
status_b = True
... | Title: System Administrator
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Polycarpus is a system administrator. There are two servers under his strict guidance — *a* and *b*. To stay informed about the servers' performance, Polycarpus executes commands "ping a" and "ping b". Each ping co... | ```python
n = int(input())
live_a = 0
dead_a = 0
live_b = 0
dead_b = 0
status_a = False
status_b = False
for i in range(n):
x = list(map(int, input().split()))
if x[0] == 1:
live_a += x[1]
dead_a += x[2]
else:
live_b += x[1]
dead_b += x[2]
if live_a >= dead_a:
status_a = True
if live_b >= dead_b:
status... | 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... | 1,694,529,905 | 2,147,483,647 | Python 3 | OK | TESTS | 35 | 62 | 0 | from sys import stdin
input = stdin.readline
if __name__ == "__main__":
n, m = map(int, input().split())
print((n*m)//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
from sys import stdin
input = stdin.readline
if __name__ == "__main__":
n, m = map(int, input().split())
print((n*m)//2)
``` | 3.9845 | MatrixStudio/Codeforces-Python-Submissions |
988 | B | Substrings Sort | PROGRAMMING | 1,100 | [
"sortings",
"strings"
] | null | null | You are given $n$ strings. Each string consists of lowercase English letters. Rearrange (reorder) the given strings in such a way that for every string, all strings that are placed before it are its substrings.
String $a$ is a substring of string $b$ if it is possible to choose several consecutive letters in $b$ in su... | The first line contains an integer $n$ ($1 \le n \le 100$) — the number of strings.
The next $n$ lines contain the given strings. The number of letters in each string is from $1$ to $100$, inclusive. Each string consists of lowercase English letters.
Some strings might be equal. | If it is impossible to reorder $n$ given strings in required order, print "NO" (without quotes).
Otherwise print "YES" (without quotes) and $n$ given strings in required order. | [
"5\na\naba\nabacaba\nba\naba\n",
"5\na\nabacaba\nba\naba\nabab\n",
"3\nqwerty\nqwerty\nqwerty\n"
] | [
"YES\na\nba\naba\naba\nabacaba\n",
"NO\n",
"YES\nqwerty\nqwerty\nqwerty\n"
] | In the second example you cannot reorder the strings because the string "abab" is not a substring of the string "abacaba". | 0 | [
{
"input": "5\na\naba\nabacaba\nba\naba",
"output": "YES\na\nba\naba\naba\nabacaba"
},
{
"input": "5\na\nabacaba\nba\naba\nabab",
"output": "NO"
},
{
"input": "3\nqwerty\nqwerty\nqwerty",
"output": "YES\nqwerty\nqwerty\nqwerty"
},
{
"input": "1\nwronganswer",
"output": "Y... | 1,679,676,044 | 2,147,483,647 | PyPy 3-64 | WRONG_ANSWER | TESTS | 4 | 46 | 0 | import sys
input = sys.stdin.readline
strings = []
n= int(input())
for _ in range(n):
strings.append(input())
ind = 1
flag = False
while ind<n:
index = ind-1
if strings[ind-1] in strings[ind]:
ind+=1
continue
elif strings[ind] in strings[index]:
while index>=0:
... | Title: Substrings Sort
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
You are given $n$ strings. Each string consists of lowercase English letters. Rearrange (reorder) the given strings in such a way that for every string, all strings that are placed before it are its substrings.
String ... | ```python
import sys
input = sys.stdin.readline
strings = []
n= int(input())
for _ in range(n):
strings.append(input())
ind = 1
flag = False
while ind<n:
index = ind-1
if strings[ind-1] in strings[ind]:
ind+=1
continue
elif strings[ind] in strings[index]:
while in... | 0 | MatrixStudio/Codeforces-Python-Submissions | |
102 | B | Sum of Digits | PROGRAMMING | 1,000 | [
"implementation"
] | B. Sum of Digits | 2 | 265 | Having watched the last Harry Potter film, little Gerald also decided to practice magic. He found in his father's magical book a spell that turns any number in the sum of its digits. At the moment Gerald learned that, he came across a number *n*. How many times can Gerald put a spell on it until the number becomes one-... | The first line contains the only integer *n* (0<=≤<=*n*<=≤<=10100000). It is guaranteed that *n* doesn't contain any leading zeroes. | Print the number of times a number can be replaced by the sum of its digits until it only contains one digit. | [
"0\n",
"10\n",
"991\n"
] | [
"0\n",
"1\n",
"3\n"
] | In the first sample the number already is one-digit — Herald can't cast a spell.
The second test contains number 10. After one casting of a spell it becomes 1, and here the process is completed. Thus, Gerald can only cast the spell once.
The third test contains number 991. As one casts a spell the following transform... | 1,000 | [
{
"input": "0",
"output": "0"
},
{
"input": "10",
"output": "1"
},
{
"input": "991",
"output": "3"
},
{
"input": "99",
"output": "2"
},
{
"input": "100",
"output": "1"
},
{
"input": "123456789",
"output": "2"
},
{
"input": "32",
"output... | 1,622,268,023 | 2,147,483,647 | PyPy 3 | OK | TESTS | 51 | 1,402 | 14,643,200 | #!/usr/bin/env python
from __future__ import division, print_function
import math
import os
import sys
from fractions import *
from sys import *
from decimal import *
from io import BytesIO, IOBase
from itertools import accumulate,combinations,permutations,combinations_with_replacement,product
from collection... | Title: Sum of Digits
Time Limit: 2 seconds
Memory Limit: 265 megabytes
Problem Description:
Having watched the last Harry Potter film, little Gerald also decided to practice magic. He found in his father's magical book a spell that turns any number in the sum of its digits. At the moment Gerald learned that, he came... | ```python
#!/usr/bin/env python
from __future__ import division, print_function
import math
import os
import sys
from fractions import *
from sys import *
from decimal import *
from io import BytesIO, IOBase
from itertools import accumulate,combinations,permutations,combinations_with_replacement,product
from ... | 3.623151 | MatrixStudio/Codeforces-Python-Submissions |
743 | A | Vladik and flights | PROGRAMMING | 1,200 | [
"constructive algorithms",
"greedy",
"implementation"
] | null | null | Vladik is a competitive programmer. This year he is going to win the International Olympiad in Informatics. But it is not as easy as it sounds: the question Vladik face now is to find the cheapest way to get to the olympiad.
Vladik knows *n* airports. All the airports are located on a straight line. Each airport has u... | The first line contains three integers *n*, *a*, and *b* (1<=≤<=*n*<=≤<=105, 1<=≤<=*a*,<=*b*<=≤<=*n*) — the number of airports, the id of the airport from which Vladik starts his route and the id of the airport which he has to reach.
The second line contains a string with length *n*, which consists only of characters... | Print single integer — the minimum cost Vladik has to pay to get to the olympiad. | [
"4 1 4\n1010\n",
"5 5 2\n10110\n"
] | [
"1",
"0"
] | In the first example Vladik can fly to the airport 2 at first and pay |1 - 2| = 1 (because the airports belong to different companies), and then fly from the airport 2 to the airport 4 for free (because the airports belong to the same company). So the cost of the whole flight is equal to 1. It's impossible to get to th... | 500 | [
{
"input": "4 1 4\n1010",
"output": "1"
},
{
"input": "5 5 2\n10110",
"output": "0"
},
{
"input": "10 9 5\n1011111001",
"output": "1"
},
{
"input": "7 3 7\n1110111",
"output": "0"
},
{
"input": "1 1 1\n1",
"output": "0"
},
{
"input": "10 3 3\n100101101... | 1,687,632,988 | 2,147,483,647 | PyPy 3-64 | OK | TESTS | 56 | 61 | 0 | n,a,b=map(int,input().split())
s=input()
print(0) if s[a-1]==s[b-1]else print(1) | Title: Vladik and flights
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Vladik is a competitive programmer. This year he is going to win the International Olympiad in Informatics. But it is not as easy as it sounds: the question Vladik face now is to find the cheapest way to get to the o... | ```python
n,a,b=map(int,input().split())
s=input()
print(0) if s[a-1]==s[b-1]else print(1)
``` | 3 | 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": "... | 1,582,113,367 | 2,147,483,647 | Python 3 | WRONG_ANSWER | TESTS | 8 | 186 | 0 | n,m=map(int,input().split())
i=1
while i<=m:
m-=i
i+=1
if i==n and m>=n:
i=1
if m>=n:
m-=n
if m==0:
break
print(m) | 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
n,m=map(int,input().split())
i=1
while i<=m:
m-=i
i+=1
if i==n and m>=n:
i=1
if m>=n:
m-=n
if m==0:
break
print(m)
``` | 0 | MatrixStudio/Codeforces-Python-Submissions |
699 | A | Launch of Collider | PROGRAMMING | 1,000 | [
"implementation"
] | null | null | There will be a launch of a new, powerful and unusual collider very soon, which located along a straight line. *n* particles will be launched inside it. All of them are located in a straight line and there can not be two or more particles located in the same point. The coordinates of the particles coincide with the dis... | The first line contains the positive integer *n* (1<=≤<=*n*<=≤<=200<=000) — the number of particles.
The second line contains *n* symbols "L" and "R". If the *i*-th symbol equals "L", then the *i*-th particle will move to the left, otherwise the *i*-th symbol equals "R" and the *i*-th particle will move to the right.... | In the first line print the only integer — the first moment (in microseconds) when two particles are at the same point and there will be an explosion.
Print the only integer -1, if the collision of particles doesn't happen. | [
"4\nRLRL\n2 4 6 10\n",
"3\nLLR\n40 50 60\n"
] | [
"1\n",
"-1\n"
] | In the first sample case the first explosion will happen in 1 microsecond because the particles number 1 and 2 will simultaneously be at the same point with the coordinate 3.
In the second sample case there will be no explosion because there are no particles which will simultaneously be at the same point. | 500 | [
{
"input": "4\nRLRL\n2 4 6 10",
"output": "1"
},
{
"input": "3\nLLR\n40 50 60",
"output": "-1"
},
{
"input": "4\nRLLR\n46 230 264 470",
"output": "92"
},
{
"input": "6\nLLRLLL\n446 492 650 844 930 970",
"output": "97"
},
{
"input": "8\nRRLLLLLL\n338 478 512 574 59... | 1,565,851,362 | 2,147,483,647 | Python 3 | OK | TESTS | 85 | 217 | 16,076,800 | n,k = int(input()),input()
l = list(map(int,input().split()))
h = [(l[i+1]-l[i])//2 for i in range(n-1) if k[i]=='R' and k[i+1]=='L' ]
if len(h)==0:print(-1)
else:print(min(h)) | Title: Launch of Collider
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
There will be a launch of a new, powerful and unusual collider very soon, which located along a straight line. *n* particles will be launched inside it. All of them are located in a straight line and there can not be... | ```python
n,k = int(input()),input()
l = list(map(int,input().split()))
h = [(l[i+1]-l[i])//2 for i in range(n-1) if k[i]=='R' and k[i+1]=='L' ]
if len(h)==0:print(-1)
else:print(min(h))
``` | 3 | MatrixStudio/Codeforces-Python-Submissions | |
146 | B | Lucky Mask | PROGRAMMING | 1,300 | [
"brute force",
"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 calls a mask of a positive integer *n* the number that is obtained after successive writing ... | The only line contains two integers *a* and *b* (1<=≤<=*a*,<=*b*<=≤<=105). It is guaranteed that number *b* is lucky. | In the only line print a single number — the number *c* that is sought by Petya. | [
"1 7\n",
"100 47\n"
] | [
"7\n",
"147\n"
] | none | 1,000 | [
{
"input": "1 7",
"output": "7"
},
{
"input": "100 47",
"output": "147"
},
{
"input": "458 47",
"output": "467"
},
{
"input": "7 7",
"output": "17"
},
{
"input": "547 47",
"output": "647"
},
{
"input": "77 77",
"output": "177"
},
{
"input":... | 1,655,872,698 | 618 | PyPy 3 | WRONG_ANSWER | TESTS | 2 | 124 | 0 | # // Problem: B. Lucky Mask
# // Contest: Codeforces - Codeforces Round #104 (Div. 2)
# // URL: https://codeforces.com/contest/146/problem/B
# // Memory Limit: 256 MB
# // Time Limit: 2000 ms
a,b=input().split()
if int(a) <= int(b):
print(b)
exit(0)
le = len(b)
print(a[:-le]+b) | Title: Lucky Mask
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.
Pe... | ```python
# // Problem: B. Lucky Mask
# // Contest: Codeforces - Codeforces Round #104 (Div. 2)
# // URL: https://codeforces.com/contest/146/problem/B
# // Memory Limit: 256 MB
# // Time Limit: 2000 ms
a,b=input().split()
if int(a) <= int(b):
print(b)
exit(0)
le = len(b)
print(a[:-le]+b)
``` | 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",
... | 1,527,135,823 | 2,147,483,647 | Python 3 | RUNTIME_ERROR | TESTS | 0 | 77 | 0 | import numpy as np
a=list(map(int,input().split()))
n=a[0]
m=a[1]
a=np.zeros((n,m))
b=np.zeros((1,m))
for i in range(n):
c=list(map(int,list(input())))
a[i]=np.array([c])
b=b+a[i]
x=b>0
x=list(x[0])
for i in range(n):
y=(b-a[i])>0
y=list(y[0])
if x==y:
print("YES")
break;
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
import numpy as np
a=list(map(int,input().split()))
n=a[0]
m=a[1]
a=np.zeros((n,m))
b=np.zeros((1,m))
for i in range(n):
c=list(map(int,list(input())))
a[i]=np.array([c])
b=b+a[i]
x=b>0
x=list(x[0])
for i in range(n):
y=(b-a[i])>0
y=list(y[0])
if x==y:
print("YES")
break;
else:
... | -1 | MatrixStudio/Codeforces-Python-Submissions | |
819 | A | Mister B and Boring Game | PROGRAMMING | 2,200 | [
"games",
"greedy"
] | null | null | Sometimes Mister B has free evenings when he doesn't know what to do. Fortunately, Mister B found a new game, where the player can play against aliens.
All characters in this game are lowercase English letters. There are two players: Mister B and his competitor.
Initially the players have a string *s* consisting of t... | First and only line contains four space-separated integers: *a*, *b*, *l* and *r* (1<=≤<=*a*,<=*b*<=≤<=12, 1<=≤<=*l*<=≤<=*r*<=≤<=109) — the numbers of letters each player appends and the bounds of the segment. | Print one integer — the minimum possible number of different letters in the segment from position *l* to position *r*, inclusive, in string *s*. | [
"1 1 1 8\n",
"4 2 2 6\n",
"3 7 4 6\n"
] | [
"2",
"3",
"1"
] | In the first sample test one of optimal strategies generate string *s* = "abababab...", that's why answer is 2.
In the second sample test string *s* = "abcdbcaefg..." can be obtained, chosen segment will look like "bcdbc", that's why answer is 3.
In the third sample test string *s* = "abczzzacad..." can be obtained, ... | 500 | [
{
"input": "1 1 1 8",
"output": "2"
},
{
"input": "4 2 2 6",
"output": "3"
},
{
"input": "3 7 4 6",
"output": "1"
},
{
"input": "4 5 1 1",
"output": "1"
},
{
"input": "12 12 1 1000",
"output": "13"
},
{
"input": "12 1 1000 1000",
"output": "1"
},... | 1,500,557,416 | 2,147,483,647 | Python 3 | WRONG_ANSWER | TESTS | 14 | 62 | 4,608,000 | (a,b,l,r) = (int(i) for i in input().split())
alf = 'abcdefghijklmnopqrstuvwxyz'
tstr = alf[:a]
tstr+=tstr[-1]*b
genstr = ''
i = 0
zapr = tstr[-a:]
while len(genstr)<a:
if alf[i] not in zapr:
genstr+=alf[i]
i+=1
tstr+=genstr
tstr+=tstr[-1]*b
onelen = 2*(a+b)
x = onelen - l%(onelen) + 1
y = r%(onelen)... | Title: Mister B and Boring Game
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Sometimes Mister B has free evenings when he doesn't know what to do. Fortunately, Mister B found a new game, where the player can play against aliens.
All characters in this game are lowercase English letters... | ```python
(a,b,l,r) = (int(i) for i in input().split())
alf = 'abcdefghijklmnopqrstuvwxyz'
tstr = alf[:a]
tstr+=tstr[-1]*b
genstr = ''
i = 0
zapr = tstr[-a:]
while len(genstr)<a:
if alf[i] not in zapr:
genstr+=alf[i]
i+=1
tstr+=genstr
tstr+=tstr[-1]*b
onelen = 2*(a+b)
x = onelen - l%(onelen) + 1
y = ... | 0 | MatrixStudio/Codeforces-Python-Submissions | |
567 | A | Lineland Mail | PROGRAMMING | 900 | [
"greedy",
"implementation"
] | null | null | All cities of Lineland are located on the *Ox* coordinate axis. Thus, each city is associated with its position *x**i* — a coordinate on the *Ox* axis. No two cities are located at a single point.
Lineland residents love to send letters to each other. A person may send a letter only if the recipient lives in another c... | The first line of the input contains integer *n* (2<=≤<=*n*<=≤<=105) — the number of cities in Lineland. The second line contains the sequence of *n* distinct integers *x*1,<=*x*2,<=...,<=*x**n* (<=-<=109<=≤<=*x**i*<=≤<=109), where *x**i* is the *x*-coordinate of the *i*-th city. All the *x**i*'s are distinct and follo... | Print *n* lines, the *i*-th line must contain two integers *min**i*,<=*max**i*, separated by a space, where *min**i* is the minimum cost of sending a letter from the *i*-th city, and *max**i* is the maximum cost of sending a letter from the *i*-th city. | [
"4\n-5 -2 2 7\n",
"2\n-1 1\n"
] | [
"3 12\n3 9\n4 7\n5 12\n",
"2 2\n2 2\n"
] | none | 500 | [
{
"input": "4\n-5 -2 2 7",
"output": "3 12\n3 9\n4 7\n5 12"
},
{
"input": "2\n-1 1",
"output": "2 2\n2 2"
},
{
"input": "3\n-1 0 1",
"output": "1 2\n1 1\n1 2"
},
{
"input": "4\n-1 0 1 3",
"output": "1 4\n1 3\n1 2\n2 4"
},
{
"input": "3\n-1000000000 0 1000000000",
... | 1,618,758,542 | 2,147,483,647 | Python 3 | OK | TESTS | 54 | 592 | 8,294,400 | n=int(input())
a=[int(j) for j in input().split()]
for j in range(n):
if(j==0):
mn=a[1]-a[j]
elif(j==n-1):
mn=a[j]-a[j-1]
else:
x1=a[j]-a[j-1]
x2=a[j+1]-a[j]
if(x1>x2):
mn=x2
else:
mn=x1
if(j==n-1):
mx=a[j]-a[0]
elif(j=... | Title: Lineland Mail
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
All cities of Lineland are located on the *Ox* coordinate axis. Thus, each city is associated with its position *x**i* — a coordinate on the *Ox* axis. No two cities are located at a single point.
Lineland residents love... | ```python
n=int(input())
a=[int(j) for j in input().split()]
for j in range(n):
if(j==0):
mn=a[1]-a[j]
elif(j==n-1):
mn=a[j]-a[j-1]
else:
x1=a[j]-a[j-1]
x2=a[j+1]-a[j]
if(x1>x2):
mn=x2
else:
mn=x1
if(j==n-1):
mx=a[j]-a[0]
... | 3 | 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"
},
{
"... | 1,662,819,887 | 2,147,483,647 | PyPy 3-64 | OK | TESTS | 34 | 77 | 3,072,000 | n = int(input())
s = list(input())[::-1]
out = []
for i in range(n):
ind = int((i+1)/2)
out = out[:ind] + [s[i]] + out[ind:]
print("".join(out[::-1]))
| 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
n = int(input())
s = list(input())[::-1]
out = []
for i in range(n):
ind = int((i+1)/2)
out = out[:ind] + [s[i]] + out[ind:]
print("".join(out[::-1]))
``` | 3 | MatrixStudio/Codeforces-Python-Submissions | |
118 | A | String Task | PROGRAMMING | 1,000 | [
"implementation",
"strings"
] | null | null | Petya started to attend programming lessons. On the first lesson his task was to write a simple program. The program was supposed to do the following: in the given string, consisting if uppercase and lowercase Latin letters, it:
- deletes all the vowels, - inserts a character "." before each consonant, - replaces ... | The first line represents input string of Petya's program. This string only consists of uppercase and lowercase Latin letters and its length is from 1 to 100, inclusive. | Print the resulting string. It is guaranteed that this string is not empty. | [
"tour\n",
"Codeforces\n",
"aBAcAba\n"
] | [
".t.r\n",
".c.d.f.r.c.s\n",
".b.c.b\n"
] | none | 500 | [
{
"input": "tour",
"output": ".t.r"
},
{
"input": "Codeforces",
"output": ".c.d.f.r.c.s"
},
{
"input": "aBAcAba",
"output": ".b.c.b"
},
{
"input": "obn",
"output": ".b.n"
},
{
"input": "wpwl",
"output": ".w.p.w.l"
},
{
"input": "ggdvq",
"output": "... | 1,693,312,140 | 2,147,483,647 | PyPy 3-64 | OK | TESTS | 42 | 124 | 0 | x = input()
vowels = ["A","E","I","U","Y","O","a","e","i","u","y","o"]
for i in x:
if i in vowels:
del i
else:
print(f".{i}".lower(),end="") | Title: String Task
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Petya started to attend programming lessons. On the first lesson his task was to write a simple program. The program was supposed to do the following: in the given string, consisting if uppercase and lowercase Latin letters... | ```python
x = input()
vowels = ["A","E","I","U","Y","O","a","e","i","u","y","o"]
for i in x:
if i in vowels:
del i
else:
print(f".{i}".lower(),end="")
``` | 3 | MatrixStudio/Codeforces-Python-Submissions | |
634 | A | Island Puzzle | PROGRAMMING | 1,300 | [
"constructive algorithms",
"implementation"
] | null | null | A remote island chain contains *n* islands, labeled 1 through *n*. Bidirectional bridges connect the islands to form a simple cycle — a bridge connects islands 1 and 2, islands 2 and 3, and so on, and additionally a bridge connects islands *n* and 1. The center of each island contains an identical pedestal, and all but... | The first line contains a single integer *n* (2<=≤<=*n*<=≤<=200<=000) — the total number of islands.
The second line contains *n* space-separated integers *a**i* (0<=≤<=*a**i*<=≤<=*n*<=-<=1) — the statue currently placed on the *i*-th island. If *a**i*<==<=0, then the island has no statue. It is guaranteed that the *a... | Print "YES" (without quotes) if the rearrangement can be done in the existing network, and "NO" otherwise. | [
"3\n1 0 2\n2 0 1\n",
"2\n1 0\n0 1\n",
"4\n1 2 3 0\n0 3 2 1\n"
] | [
"YES\n",
"YES\n",
"NO\n"
] | In the first sample, the islanders can first move statue 1 from island 1 to island 2, then move statue 2 from island 3 to island 1, and finally move statue 1 from island 2 to island 3.
In the second sample, the islanders can simply move statue 1 from island 1 to island 2.
In the third sample, no sequence of movements... | 500 | [
{
"input": "3\n1 0 2\n2 0 1",
"output": "YES"
},
{
"input": "2\n1 0\n0 1",
"output": "YES"
},
{
"input": "4\n1 2 3 0\n0 3 2 1",
"output": "NO"
},
{
"input": "9\n3 8 4 6 7 1 5 2 0\n6 4 8 5 3 1 2 0 7",
"output": "NO"
},
{
"input": "4\n2 3 1 0\n2 0 1 3",
"output"... | 1,689,452,439 | 2,147,483,647 | PyPy 3-64 | WRONG_ANSWER | TESTS | 0 | 30 | 0 | print("_RANDOM_GUESS_1689452439.7698092")# 1689452439.7698298 | Title: Island Puzzle
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
A remote island chain contains *n* islands, labeled 1 through *n*. Bidirectional bridges connect the islands to form a simple cycle — a bridge connects islands 1 and 2, islands 2 and 3, and so on, and additionally a bridg... | ```python
print("_RANDOM_GUESS_1689452439.7698092")# 1689452439.7698298
``` | 0 | MatrixStudio/Codeforces-Python-Submissions | |
181 | A | Series of Crimes | PROGRAMMING | 800 | [
"brute force",
"geometry",
"implementation"
] | null | null | The Berland capital is shaken with three bold crimes committed by the Pihsters, a notorious criminal gang.
The Berland capital's map is represented by an *n*<=×<=*m* rectangular table. Each cell of the table on the map represents some districts of the capital.
The capital's main detective Polycarpus took a map and m... | The first line contains two space-separated integers *n* and *m* (2<=≤<=*n*,<=*m*<=≤<=100) — the number of rows and columns in the table, correspondingly.
Each of the next *n* lines contains *m* characters — the description of the capital's map. Each character can either be a "." (dot), or an "*" (asterisk). A charact... | Print two integers — the number of the row and the number of the column of the city district that is the fourth one to be robbed. The rows are numbered starting from one from top to bottom and the columns are numbered starting from one from left to right. | [
"3 2\n.*\n..\n**\n",
"3 3\n*.*\n*..\n...\n"
] | [
"1 1\n",
"2 3\n"
] | none | 500 | [
{
"input": "3 2\n.*\n..\n**",
"output": "1 1"
},
{
"input": "2 5\n*....\n*...*",
"output": "1 5"
},
{
"input": "7 2\n..\n**\n..\n..\n..\n..\n.*",
"output": "7 1"
},
{
"input": "7 2\n*.\n..\n..\n..\n..\n..\n**",
"output": "1 2"
},
{
"input": "2 10\n*......*..\n....... | 1,554,397,971 | 2,147,483,647 | Python 3 | WRONG_ANSWER | TESTS | 7 | 218 | 0 | x,y = map(int,input().split())
c = 0
z = []
t = 0
for i in range(x):
z.append(input())
for j in range(x):
c = 0
for k in range(y):
if z[j].count("*") == 2:
if z[j][k] == "*":
t = k
c = c + 1
if c == 1:
m = k
if c == 2:
m1 = k
if z[j].count("*") == 1:
a1 = j+1
... | Title: Series of Crimes
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
The Berland capital is shaken with three bold crimes committed by the Pihsters, a notorious criminal gang.
The Berland capital's map is represented by an *n*<=×<=*m* rectangular table. Each cell of the table on the ma... | ```python
x,y = map(int,input().split())
c = 0
z = []
t = 0
for i in range(x):
z.append(input())
for j in range(x):
c = 0
for k in range(y):
if z[j].count("*") == 2:
if z[j][k] == "*":
t = k
c = c + 1
if c == 1:
m = k
if c == 2:
m1 = k
if z[j].count("*") == 1:
a1... | 0 | MatrixStudio/Codeforces-Python-Submissions | |
631 | C | Report | PROGRAMMING | 1,700 | [
"data structures",
"sortings"
] | null | null | Each month Blake gets the report containing main economic indicators of the company "Blake Technologies". There are *n* commodities produced by the company. For each of them there is exactly one integer in the final report, that denotes corresponding revenue. Before the report gets to Blake, it passes through the hands... | The first line of the input contains two integers *n* and *m* (1<=≤<=*n*,<=*m*<=≤<=200<=000) — the number of commodities in the report and the number of managers, respectively.
The second line contains *n* integers *a**i* (|*a**i*|<=≤<=109) — the initial report before it gets to the first manager.
Then follow *m* lin... | Print *n* integers — the final report, which will be passed to Blake by manager number *m*. | [
"3 1\n1 2 3\n2 2\n",
"4 2\n1 2 4 3\n2 3\n1 2\n"
] | [
"2 1 3 ",
"2 4 1 3 "
] | In the first sample, the initial report looked like: 1 2 3. After the first manager the first two numbers were transposed: 2 1 3. The report got to Blake in this form.
In the second sample the original report was like this: 1 2 4 3. After the first manager the report changed to: 4 2 1 3. After the second manager the r... | 1,500 | [
{
"input": "3 1\n1 2 3\n2 2",
"output": "2 1 3 "
},
{
"input": "4 2\n1 2 4 3\n2 3\n1 2",
"output": "2 4 1 3 "
},
{
"input": "4 1\n4 3 2 1\n1 4",
"output": "1 2 3 4 "
},
{
"input": "5 1\n1 2 3 4 5\n2 5",
"output": "5 4 3 2 1 "
},
{
"input": "6 2\n3 1 2 6 4 5\n1 6\n... | 1,466,526,942 | 2,147,483,647 | Python 3 | RUNTIME_ERROR | TESTS | 0 | 46 | 0 | t, k = [int(a) for a in input().strip().split()]
l = []
for i in range(t):
n, p = [int(a) for a in input().strip().split()]
l.append(n*100+p)
l.sort(reverse=True)
c=0
for i in range(t):
print(l[i])
if int(l[k]) == int(l[i]):
c += 1
print(c) | Title: Report
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Each month Blake gets the report containing main economic indicators of the company "Blake Technologies". There are *n* commodities produced by the company. For each of them there is exactly one integer in the final report, that... | ```python
t, k = [int(a) for a in input().strip().split()]
l = []
for i in range(t):
n, p = [int(a) for a in input().strip().split()]
l.append(n*100+p)
l.sort(reverse=True)
c=0
for i in range(t):
print(l[i])
if int(l[k]) == int(l[i]):
c += 1
print(c)
``` | -1 | MatrixStudio/Codeforces-Python-Submissions | |
981 | A | Antipalindrome | PROGRAMMING | 900 | [
"brute force",
"implementation",
"strings"
] | null | null | A string is a palindrome if it reads the same from the left to the right and from the right to the left. For example, the strings "kek", "abacaba", "r" and "papicipap" are palindromes, while the strings "abb" and "iq" are not.
A substring $s[l \ldots r]$ ($1<=\leq<=l<=\leq<=r<=\leq<=|s|$) of a string $s<==<=s_{1}s_{2}... | The first line contains a non-empty string $s$ with length at most $50$ characters, containing lowercase English letters only. | If there is such a substring in $s$ that is not a palindrome, print the maximum length of such a substring. Otherwise print $0$.
Note that there can be multiple longest substrings that are not palindromes, but their length is unique. | [
"mew\n",
"wuffuw\n",
"qqqqqqqq\n"
] | [
"3\n",
"5\n",
"0\n"
] | "mew" is not a palindrome, so the longest substring of it that is not a palindrome, is the string "mew" itself. Thus, the answer for the first example is $3$.
The string "uffuw" is one of the longest non-palindrome substrings (of length $5$) of the string "wuffuw", so the answer for the second example is $5$.
All sub... | 500 | [
{
"input": "mew",
"output": "3"
},
{
"input": "wuffuw",
"output": "5"
},
{
"input": "qqqqqqqq",
"output": "0"
},
{
"input": "ijvji",
"output": "4"
},
{
"input": "iiiiiii",
"output": "0"
},
{
"input": "wobervhvvkihcuyjtmqhaaigvvgiaahqmtjyuchikvvhvrebow"... | 1,527,436,094 | 3,494 | Python 3 | OK | TESTS | 133 | 93 | 0 | s = input()
def main():
letters = set()
for letter in s:
letters.add(letter)
if len(letters) == 1:
return 0
l = len(s)
is_polindrom = True
for i in range(l//2):
if s[i]!=s[l-1-i]:
is_polindrom = False
break
if is_polindrom == False:
... | Title: Antipalindrome
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
A string is a palindrome if it reads the same from the left to the right and from the right to the left. For example, the strings "kek", "abacaba", "r" and "papicipap" are palindromes, while the strings "abb" and "iq" ar... | ```python
s = input()
def main():
letters = set()
for letter in s:
letters.add(letter)
if len(letters) == 1:
return 0
l = len(s)
is_polindrom = True
for i in range(l//2):
if s[i]!=s[l-1-i]:
is_polindrom = False
break
if is_polindrom == Fals... | 3 | MatrixStudio/Codeforces-Python-Submissions | |
908 | A | New Year and Counting Cards | PROGRAMMING | 800 | [
"brute force",
"implementation"
] | null | null | Your friend has *n* cards.
You know that each card has a lowercase English letter on one side and a digit on the other.
Currently, your friend has laid out the cards on a table so only one side of each card is visible.
You would like to know if the following statement is true for cards that your friend owns: "If a c... | The first and only line of input will contain a string *s* (1<=≤<=|*s*|<=≤<=50), denoting the sides of the cards that you can see on the table currently. Each character of *s* is either a lowercase English letter or a digit. | Print a single integer, the minimum number of cards you must turn over to verify your claim. | [
"ee\n",
"z\n",
"0ay1\n"
] | [
"2\n",
"0\n",
"2\n"
] | In the first sample, we must turn over both cards. Note that even though both cards have the same letter, they could possibly have different numbers on the other side.
In the second sample, we don't need to turn over any cards. The statement is vacuously true, since you know your friend has no cards with a vowel on th... | 500 | [
{
"input": "ee",
"output": "2"
},
{
"input": "z",
"output": "0"
},
{
"input": "0ay1",
"output": "2"
},
{
"input": "0abcdefghijklmnopqrstuvwxyz1234567896",
"output": "10"
},
{
"input": "0a0a9e9e2i2i9o9o6u6u9z9z4x4x9b9b",
"output": "18"
},
{
"input": "01... | 1,691,569,617 | 2,147,483,647 | Python 3 | WRONG_ANSWER | TESTS | 3 | 46 | 0 | def solve():
need = "aeiou02468"
total = 0
for x in input():
if x in need:
total += 1
print(total)
if __name__ == "__main__":
solve()
| Title: New Year and Counting Cards
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Your friend has *n* cards.
You know that each card has a lowercase English letter on one side and a digit on the other.
Currently, your friend has laid out the cards on a table so only one side of each car... | ```python
def solve():
need = "aeiou02468"
total = 0
for x in input():
if x in need:
total += 1
print(total)
if __name__ == "__main__":
solve()
``` | 0 | MatrixStudio/Codeforces-Python-Submissions | |
743 | A | Vladik and flights | PROGRAMMING | 1,200 | [
"constructive algorithms",
"greedy",
"implementation"
] | null | null | Vladik is a competitive programmer. This year he is going to win the International Olympiad in Informatics. But it is not as easy as it sounds: the question Vladik face now is to find the cheapest way to get to the olympiad.
Vladik knows *n* airports. All the airports are located on a straight line. Each airport has u... | The first line contains three integers *n*, *a*, and *b* (1<=≤<=*n*<=≤<=105, 1<=≤<=*a*,<=*b*<=≤<=*n*) — the number of airports, the id of the airport from which Vladik starts his route and the id of the airport which he has to reach.
The second line contains a string with length *n*, which consists only of characters... | Print single integer — the minimum cost Vladik has to pay to get to the olympiad. | [
"4 1 4\n1010\n",
"5 5 2\n10110\n"
] | [
"1",
"0"
] | In the first example Vladik can fly to the airport 2 at first and pay |1 - 2| = 1 (because the airports belong to different companies), and then fly from the airport 2 to the airport 4 for free (because the airports belong to the same company). So the cost of the whole flight is equal to 1. It's impossible to get to th... | 500 | [
{
"input": "4 1 4\n1010",
"output": "1"
},
{
"input": "5 5 2\n10110",
"output": "0"
},
{
"input": "10 9 5\n1011111001",
"output": "1"
},
{
"input": "7 3 7\n1110111",
"output": "0"
},
{
"input": "1 1 1\n1",
"output": "0"
},
{
"input": "10 3 3\n100101101... | 1,587,301,049 | 2,147,483,647 | Python 3 | RUNTIME_ERROR | TESTS | 0 | 78 | 0 | l, i, j = map(int, input().split())
s = input()
if s[i] == s[j]:
print(0)
else:
print(1) | Title: Vladik and flights
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Vladik is a competitive programmer. This year he is going to win the International Olympiad in Informatics. But it is not as easy as it sounds: the question Vladik face now is to find the cheapest way to get to the o... | ```python
l, i, j = map(int, input().split())
s = input()
if s[i] == s[j]:
print(0)
else:
print(1)
``` | -1 | 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"
},
{
"... | 1,598,000,218 | 2,147,483,647 | Python 3 | OK | TESTS | 114 | 109 | 6,758,400 | a,b=map(int,input().split())
c=input()
d={}
for i in c:
d[i]=d.get(i,0)+1
m=max(d.values())
if m>b:
print('NO')
else:
print('YES') | 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
a,b=map(int,input().split())
c=input()
d={}
for i in c:
d[i]=d.get(i,0)+1
m=max(d.values())
if m>b:
print('NO')
else:
print('YES')
``` | 3 | MatrixStudio/Codeforces-Python-Submissions | |
967 | A | Mind the Gap | PROGRAMMING | 1,100 | [
"implementation"
] | null | null | These days Arkady works as an air traffic controller at a large airport. He controls a runway which is usually used for landings only. Thus, he has a schedule of planes that are landing in the nearest future, each landing lasts $1$ minute.
He was asked to insert one takeoff in the schedule. The takeoff takes $1$ minut... | The first line of input contains two integers $n$ and $s$ ($1 \le n \le 100$, $1 \le s \le 60$) — the number of landings on the schedule and the minimum allowed time (in minutes) between a landing and a takeoff.
Each of next $n$ lines contains two integers $h$ and $m$ ($0 \le h \le 23$, $0 \le m \le 59$) — the time, i... | Print two integers $h$ and $m$ — the hour and the minute from the current moment of the earliest time Arkady can insert the takeoff. | [
"6 60\n0 0\n1 20\n3 21\n5 0\n19 30\n23 40\n",
"16 50\n0 30\n1 20\n3 0\n4 30\n6 10\n7 50\n9 30\n11 10\n12 50\n14 30\n16 10\n17 50\n19 30\n21 10\n22 50\n23 59\n",
"3 17\n0 30\n1 0\n12 0\n"
] | [
"6 1\n",
"24 50\n",
"0 0\n"
] | In the first example note that there is not enough time between 1:20 and 3:21, because each landing and the takeoff take one minute.
In the second example there is no gaps in the schedule, so Arkady can only add takeoff after all landings. Note that it is possible that one should wait more than $24$ hours to insert th... | 500 | [
{
"input": "6 60\n0 0\n1 20\n3 21\n5 0\n19 30\n23 40",
"output": "6 1"
},
{
"input": "16 50\n0 30\n1 20\n3 0\n4 30\n6 10\n7 50\n9 30\n11 10\n12 50\n14 30\n16 10\n17 50\n19 30\n21 10\n22 50\n23 59",
"output": "24 50"
},
{
"input": "3 17\n0 30\n1 0\n12 0",
"output": "0 0"
},
{
... | 1,525,037,418 | 2,147,483,647 | Python 3 | WRONG_ANSWER | TESTS | 9 | 124 | 7,065,600 | n,s=map(int,input().split())
a=[]
for i in range(n):
q=list(map(int,input().split()))
a.append(q[0]*60+q[1])
if a[0]>s+1:
print(0,0)
exit()
for j in range(1440):
for i in range(n-1):
if a[i]+s<j<a[i+1]-s:
print(j//60,j%60)
exit()
j=a[n-1]+s+1
print(j//60... | Title: Mind the Gap
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
These days Arkady works as an air traffic controller at a large airport. He controls a runway which is usually used for landings only. Thus, he has a schedule of planes that are landing in the nearest future, each landing ... | ```python
n,s=map(int,input().split())
a=[]
for i in range(n):
q=list(map(int,input().split()))
a.append(q[0]*60+q[1])
if a[0]>s+1:
print(0,0)
exit()
for j in range(1440):
for i in range(n-1):
if a[i]+s<j<a[i+1]-s:
print(j//60,j%60)
exit()
j=a[n-1]+s+1
p... | 0 | MatrixStudio/Codeforces-Python-Submissions | |
165 | A | Supercentral Point | PROGRAMMING | 1,000 | [
"implementation"
] | null | null | One day Vasya painted a Cartesian coordinate system on a piece of paper and marked some set of points (*x*1,<=*y*1),<=(*x*2,<=*y*2),<=...,<=(*x**n*,<=*y**n*). Let's define neighbors for some fixed point from the given set (*x*,<=*y*):
- point (*x*',<=*y*') is (*x*,<=*y*)'s right neighbor, if *x*'<=><=*x* and *y*'... | The first input line contains the only integer *n* (1<=≤<=*n*<=≤<=200) — the number of points in the given set. Next *n* lines contain the coordinates of the points written as "*x* *y*" (without the quotes) (|*x*|,<=|*y*|<=≤<=1000), all coordinates are integers. The numbers in the line are separated by exactly one spac... | Print the only number — the number of supercentral points of the given set. | [
"8\n1 1\n4 2\n3 1\n1 2\n0 2\n0 1\n1 0\n1 3\n",
"5\n0 0\n0 1\n1 0\n0 -1\n-1 0\n"
] | [
"2\n",
"1\n"
] | In the first sample the supercentral points are only points (1, 1) and (1, 2).
In the second sample there is one supercental point — point (0, 0). | 500 | [
{
"input": "8\n1 1\n4 2\n3 1\n1 2\n0 2\n0 1\n1 0\n1 3",
"output": "2"
},
{
"input": "5\n0 0\n0 1\n1 0\n0 -1\n-1 0",
"output": "1"
},
{
"input": "9\n-565 -752\n-184 723\n-184 -752\n-184 1\n950 723\n-565 723\n950 -752\n950 1\n-565 1",
"output": "1"
},
{
"input": "25\n-651 897\n... | 1,652,959,180 | 2,147,483,647 | Python 3 | OK | TESTS | 26 | 92 | 4,505,600 | n = int(input())
l = []
count = 0
for _ in range(n):
r = list(map(int,input().split()))
l.append(r)
for i in range(n):
t = l[i]
x = t[0]
y = t[1]
if any(x==x1 and y<y1 for x1,y1 in l) and any(x==x1 and y>y1 for x1,y1 in l) and any(y==y1 and x<x1 for x1,y1 in l) and any(y==y1 and x>x1 for x1,y1 in ... | Title: Supercentral Point
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
One day Vasya painted a Cartesian coordinate system on a piece of paper and marked some set of points (*x*1,<=*y*1),<=(*x*2,<=*y*2),<=...,<=(*x**n*,<=*y**n*). Let's define neighbors for some fixed point from the give... | ```python
n = int(input())
l = []
count = 0
for _ in range(n):
r = list(map(int,input().split()))
l.append(r)
for i in range(n):
t = l[i]
x = t[0]
y = t[1]
if any(x==x1 and y<y1 for x1,y1 in l) and any(x==x1 and y>y1 for x1,y1 in l) and any(y==y1 and x<x1 for x1,y1 in l) and any(y==y1 and x>x1 for... | 3 | MatrixStudio/Codeforces-Python-Submissions | |
832 | A | Sasha and Sticks | PROGRAMMING | 800 | [
"games",
"math"
] | null | null | It's one more school day now. Sasha doesn't like classes and is always bored at them. So, each day he invents some game and plays in it alone or with friends.
Today he invented one simple game to play with Lena, with whom he shares a desk. The rules are simple. Sasha draws *n* sticks in a row. After that the players t... | The first line contains two integers *n* and *k* (1<=≤<=*n*,<=*k*<=≤<=1018, *k*<=≤<=*n*) — the number of sticks drawn by Sasha and the number *k* — the number of sticks to be crossed out on each turn. | If Sasha wins, print "YES" (without quotes), otherwise print "NO" (without quotes).
You can print each letter in arbitrary case (upper of lower). | [
"1 1\n",
"10 4\n"
] | [
"YES\n",
"NO\n"
] | In the first example Sasha crosses out 1 stick, and then there are no sticks. So Lena can't make a move, and Sasha wins.
In the second example Sasha crosses out 4 sticks, then Lena crosses out 4 sticks, and after that there are only 2 sticks left. Sasha can't make a move. The players make equal number of moves, so Sas... | 500 | [
{
"input": "1 1",
"output": "YES"
},
{
"input": "10 4",
"output": "NO"
},
{
"input": "251656215122324104 164397544865601257",
"output": "YES"
},
{
"input": "963577813436662285 206326039287271924",
"output": "NO"
},
{
"input": "1000000000000000000 1",
"output":... | 1,627,632,395 | 2,147,483,647 | Python 3 | OK | TESTS | 62 | 77 | 6,758,400 | n,k = list(map(int, input().split()))
print('NO' if (n//k)%2==0 else 'YES') | Title: Sasha and Sticks
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
It's one more school day now. Sasha doesn't like classes and is always bored at them. So, each day he invents some game and plays in it alone or with friends.
Today he invented one simple game to play with Lena, with ... | ```python
n,k = list(map(int, input().split()))
print('NO' if (n//k)%2==0 else 'YES')
``` | 3 | MatrixStudio/Codeforces-Python-Submissions | |
155 | A | I_love_\%username\% | PROGRAMMING | 800 | [
"brute force"
] | null | null | Vasya adores sport programming. He can't write programs but he loves to watch the contests' progress. Vasya even has a favorite coder and Vasya pays special attention to him.
One day Vasya decided to collect the results of all contests where his favorite coder participated and track the progress of his coolness. For e... | The first line contains the single integer *n* (1<=≤<=*n*<=≤<=1000) — the number of contests where the coder participated.
The next line contains *n* space-separated non-negative integer numbers — they are the points which the coder has earned. The points are given in the chronological order. All points do not exceed ... | Print the single number — the number of amazing performances the coder has had during his whole history of participating in the contests. | [
"5\n100 50 200 150 200\n",
"10\n4664 6496 5814 7010 5762 5736 6944 4850 3698 7242\n"
] | [
"2\n",
"4\n"
] | In the first sample the performances number 2 and 3 are amazing.
In the second sample the performances number 2, 4, 9 and 10 are amazing. | 500 | [
{
"input": "5\n100 50 200 150 200",
"output": "2"
},
{
"input": "10\n4664 6496 5814 7010 5762 5736 6944 4850 3698 7242",
"output": "4"
},
{
"input": "1\n6",
"output": "0"
},
{
"input": "2\n2 1",
"output": "1"
},
{
"input": "5\n100 36 53 7 81",
"output": "2"
... | 1,678,006,004 | 2,147,483,647 | Python 3 | OK | TESTS | 37 | 122 | 0 | n = int(input())
a = list(map(int,input().split()))
c = 0
l = [a[0]]
for i in range(1,n):
if a[i]>max(l) or a[i]<min(l):
c += 1
l.append(a[i])
print(c)
| Title: I_love_\%username\%
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Vasya adores sport programming. He can't write programs but he loves to watch the contests' progress. Vasya even has a favorite coder and Vasya pays special attention to him.
One day Vasya decided to collect the re... | ```python
n = int(input())
a = list(map(int,input().split()))
c = 0
l = [a[0]]
for i in range(1,n):
if a[i]>max(l) or a[i]<min(l):
c += 1
l.append(a[i])
print(c)
``` | 3 | MatrixStudio/Codeforces-Python-Submissions | |
27 | A | Next Test | PROGRAMMING | 1,200 | [
"implementation",
"sortings"
] | A. Next Test | 2 | 256 | «Polygon» is a system which allows to create programming tasks in a simple and professional way. When you add a test to the problem, the corresponding form asks you for the test index. As in most cases it is clear which index the next test will have, the system suggests the default value of the index. It is calculated ... | The first line contains one integer *n* (1<=≤<=*n*<=≤<=3000) — the amount of previously added tests. The second line contains *n* distinct integers *a*1,<=*a*2,<=...,<=*a**n* (1<=≤<=*a**i*<=≤<=3000) — indexes of these tests. | Output the required default value for the next test index. | [
"3\n1 7 2\n"
] | [
"3\n"
] | none | 500 | [
{
"input": "1\n1",
"output": "2"
},
{
"input": "2\n2 1",
"output": "3"
},
{
"input": "3\n3 4 1",
"output": "2"
},
{
"input": "4\n6 4 3 5",
"output": "1"
},
{
"input": "5\n3 2 1 7 4",
"output": "5"
},
{
"input": "6\n4 1 2 5 3 7",
"output": "6"
},
... | 1,664,861,442 | 2,147,483,647 | Python 3 | OK | TESTS | 30 | 186 | 0 | n = input()
inp = [int(i) for i in input().split()]
for i in range(1,max(inp)+2):
if i not in inp:
print(i)
break | Title: Next Test
Time Limit: 2 seconds
Memory Limit: 256 megabytes
Problem Description:
«Polygon» is a system which allows to create programming tasks in a simple and professional way. When you add a test to the problem, the corresponding form asks you for the test index. As in most cases it is clear which index the... | ```python
n = input()
inp = [int(i) for i in input().split()]
for i in range(1,max(inp)+2):
if i not in inp:
print(i)
break
``` | 3.9535 | MatrixStudio/Codeforces-Python-Submissions |
77 | B | Falling Anvils | PROGRAMMING | 1,800 | [
"math",
"probabilities"
] | B. Falling Anvils | 2 | 256 | For some reason in many American cartoons anvils fall from time to time onto heroes' heads. Of course, safes, wardrobes, cruisers, planes fall sometimes too... But anvils do so most of all.
Anvils come in different sizes and shapes. Quite often they get the hero stuck deep in the ground. But have you ever thought who ... | The first line contains integer *t* (1<=≤<=*t*<=≤<=10000) — amount of testcases.
Each of the following *t* lines contain two space-separated integers *a* and *b* (0<=≤<=*a*,<=*b*<=≤<=106).
Pretests contain all the tests with 0<=<<=*a*<=<<=10,<=0<=≤<=*b*<=<<=10. | Print *t* lines — the probability of a successful anvil hit for each testcase. The absolute or relative error of the answer should not exceed 10<=-<=6. | [
"2\n4 2\n1 2\n"
] | [
"0.6250000000\n0.5312500000\n"
] | none | 1,000 | [
{
"input": "2\n4 2\n1 2",
"output": "0.6250000000\n0.5312500000"
},
{
"input": "90\n1 1\n2 1\n3 1\n4 1\n5 1\n6 1\n7 1\n8 1\n9 1\n1 2\n2 2\n3 2\n4 2\n5 2\n6 2\n7 2\n8 2\n9 2\n1 3\n2 3\n3 3\n4 3\n5 3\n6 3\n7 3\n8 3\n9 3\n1 4\n2 4\n3 4\n4 4\n5 4\n6 4\n7 4\n8 4\n9 4\n1 5\n2 5\n3 5\n4 5\n5 5\n6 5\n7 5\n8... | 1,532,366,168 | 2,147,483,647 | Python 3 | RUNTIME_ERROR | TESTS | 1 | 218 | 0 | t = int(input())
for _ in range(t):
a, b = map(int, input().split())
if a == 0 and b == 0:
print(1)
elif a == 0:
print(0.5)
elif a > 4 * b:
print('%.10f' % (a - 4 * b) / a + 0.5 + b / a)
else:
print('%.10f' % (a / 16 / b + 0.5))
| Title: Falling Anvils
Time Limit: 2 seconds
Memory Limit: 256 megabytes
Problem Description:
For some reason in many American cartoons anvils fall from time to time onto heroes' heads. Of course, safes, wardrobes, cruisers, planes fall sometimes too... But anvils do so most of all.
Anvils come in different sizes an... | ```python
t = int(input())
for _ in range(t):
a, b = map(int, input().split())
if a == 0 and b == 0:
print(1)
elif a == 0:
print(0.5)
elif a > 4 * b:
print('%.10f' % (a - 4 * b) / a + 0.5 + b / a)
else:
print('%.10f' % (a / 16 / b + 0.5))
``` | -1 | MatrixStudio/Codeforces-Python-Submissions |
63 | A | Sinking Ship | PROGRAMMING | 900 | [
"implementation",
"sortings",
"strings"
] | A. Sinking Ship | 2 | 256 | The ship crashed into a reef and is sinking. Now the entire crew must be evacuated. All *n* crew members have already lined up in a row (for convenience let's label them all from left to right with positive integers from 1 to *n*) and await further instructions. However, one should evacuate the crew properly, in a stri... | The first line contains an integer *n*, which is the number of people in the crew (1<=≤<=*n*<=≤<=100). Then follow *n* lines. The *i*-th of those lines contains two words — the name of the crew member who is *i*-th in line, and his status on the ship. The words are separated by exactly one space. There are no other spa... | Print *n* lines. The *i*-th of them should contain the name of the crew member who must be the *i*-th one to leave the ship. | [
"6\nJack captain\nAlice woman\nCharlie man\nTeddy rat\nBob child\nJulia woman\n"
] | [
"Teddy\nAlice\nBob\nJulia\nCharlie\nJack\n"
] | none | 500 | [
{
"input": "6\nJack captain\nAlice woman\nCharlie man\nTeddy rat\nBob child\nJulia woman",
"output": "Teddy\nAlice\nBob\nJulia\nCharlie\nJack"
},
{
"input": "1\nA captain",
"output": "A"
},
{
"input": "1\nAbcdefjhij captain",
"output": "Abcdefjhij"
},
{
"input": "5\nA captain... | 1,592,241,513 | 2,147,483,647 | PyPy 3 | TIME_LIMIT_EXCEEDED | TESTS | 0 | 2,000 | 1,228,800 | n=int(input())
a=[]
for i in range(n):
f,l=map(str,input().split())
a.append([f,l])
cap=[]
wnc=[]
rat=[]
man=[]
for i in range(n):
if a[i][1]=='rat':
rat.append(a[i][0])
elif a[i][1]=='woman' or a[i][1]=='child':
wnc.append(a[i][0])
elif a[i][1]=='man':
man.append(a[i][0])
... | Title: Sinking Ship
Time Limit: 2 seconds
Memory Limit: 256 megabytes
Problem Description:
The ship crashed into a reef and is sinking. Now the entire crew must be evacuated. All *n* crew members have already lined up in a row (for convenience let's label them all from left to right with positive integers from 1 to ... | ```python
n=int(input())
a=[]
for i in range(n):
f,l=map(str,input().split())
a.append([f,l])
cap=[]
wnc=[]
rat=[]
man=[]
for i in range(n):
if a[i][1]=='rat':
rat.append(a[i][0])
elif a[i][1]=='woman' or a[i][1]=='child':
wnc.append(a[i][0])
elif a[i][1]=='man':
man.append(a... | 0 | MatrixStudio/Codeforces-Python-Submissions |
5 | B | Center Alignment | PROGRAMMING | 1,200 | [
"implementation",
"strings"
] | B. Center Alignment | 1 | 64 | Almost every text editor has a built-in function of center text alignment. The developers of the popular in Berland text editor «Textpad» decided to introduce this functionality into the fourth release of the product.
You are to implement the alignment in the shortest possible time. Good luck! | The input file consists of one or more lines, each of the lines contains Latin letters, digits and/or spaces. The lines cannot start or end with a space. It is guaranteed that at least one of the lines has positive length. The length of each line and the total amount of the lines do not exceed 1000. | Format the given text, aligning it center. Frame the whole text with characters «*» of the minimum size. If a line cannot be aligned perfectly (for example, the line has even length, while the width of the block is uneven), you should place such lines rounding down the distance to the left or to the right edge and brin... | [
"This is\n\nCodeforces\nBeta\nRound\n5\n",
"welcome to the\nCodeforces\nBeta\nRound 5\n\nand\ngood luck\n"
] | [
"************\n* This is *\n* *\n*Codeforces*\n* Beta *\n* Round *\n* 5 *\n************\n",
"****************\n*welcome to the*\n* Codeforces *\n* Beta *\n* Round 5 *\n* *\n* and *\n* good luck *\n****************\n"
] | none | 0 | [
{
"input": "This is\n\nCodeforces\nBeta\nRound\n5",
"output": "************\n* This is *\n* *\n*Codeforces*\n* Beta *\n* Round *\n* 5 *\n************"
},
{
"input": "welcome to the\nCodeforces\nBeta\nRound 5\n\nand\ngood luck",
"output": "****************\n*welcome to th... | 1,520,175,943 | 2,147,483,647 | Python 3 | RUNTIME_ERROR | TESTS | 0 | 92 | 5,632,000 | # -*- coding: utf-8 -*-
"""
Created on Sun Mar 4 14:41:00 2018
@author: hp
"""
import sys
lines = [line.strip() for line in sys.stdin]
longest = 0
for i in range(len(lines)):
if longest < len(lines[i]):
longest = len(lines[i])
left = 1
for i in range(longest + 1):
print('... | Title: Center Alignment
Time Limit: 1 seconds
Memory Limit: 64 megabytes
Problem Description:
Almost every text editor has a built-in function of center text alignment. The developers of the popular in Berland text editor «Textpad» decided to introduce this functionality into the fourth release of the product.
You ... | ```python
# -*- coding: utf-8 -*-
"""
Created on Sun Mar 4 14:41:00 2018
@author: hp
"""
import sys
lines = [line.strip() for line in sys.stdin]
longest = 0
for i in range(len(lines)):
if longest < len(lines[i]):
longest = len(lines[i])
left = 1
for i in range(longest + 1):
... | -1 | 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... | 1,666,039,258 | 2,147,483,647 | Python 3 | WRONG_ANSWER | TESTS | 2 | 31 | 0 | s=input()
if "he" in s and "llo" in s:
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
s=input()
if "he" in s and "llo" in s:
print("YES")
else:print("NO")
``` | 0 | MatrixStudio/Codeforces-Python-Submissions |
451 | A | Game With Sticks | PROGRAMMING | 900 | [
"implementation"
] | null | null | After winning gold and silver in IOI 2014, Akshat and Malvika want to have some fun. Now they are playing a game on a grid made of *n* horizontal and *m* vertical sticks.
An intersection point is any point on the grid which is formed by the intersection of one horizontal stick and one vertical stick.
In the grid show... | The first line of input contains two space-separated integers, *n* and *m* (1<=≤<=*n*,<=*m*<=≤<=100). | Print a single line containing "Akshat" or "Malvika" (without the quotes), depending on the winner of the game. | [
"2 2\n",
"2 3\n",
"3 3\n"
] | [
"Malvika\n",
"Malvika\n",
"Akshat\n"
] | Explanation of the first sample:
The grid has four intersection points, numbered from 1 to 4.
If Akshat chooses intersection point 1, then he will remove two sticks (1 - 2 and 1 - 3). The resulting grid will look like this.
Now there is only one remaining intersection point (i.e. 4). Malvika must choose it and remov... | 500 | [
{
"input": "2 2",
"output": "Malvika"
},
{
"input": "2 3",
"output": "Malvika"
},
{
"input": "3 3",
"output": "Akshat"
},
{
"input": "20 68",
"output": "Malvika"
},
{
"input": "1 1",
"output": "Akshat"
},
{
"input": "1 2",
"output": "Akshat"
},
... | 1,693,295,440 | 2,147,483,647 | Python 3 | OK | TESTS | 28 | 31 | 0 | inp = input().split()
row = int(inp[0])
col = int(inp[1])
player = 'Akshat' #'Malvika'
while row*col != 0:
row -=1
col -=1
if player == 'Akshat':
player = 'Malvika'
else:
player = 'Akshat'
if player == 'Akshat':
print('Malvika')
else:
print('Akshat') | Title: Game With Sticks
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
After winning gold and silver in IOI 2014, Akshat and Malvika want to have some fun. Now they are playing a game on a grid made of *n* horizontal and *m* vertical sticks.
An intersection point is any point on the grid... | ```python
inp = input().split()
row = int(inp[0])
col = int(inp[1])
player = 'Akshat' #'Malvika'
while row*col != 0:
row -=1
col -=1
if player == 'Akshat':
player = 'Malvika'
else:
player = 'Akshat'
if player == 'Akshat':
print('Malvika')
else:
print('Akshat')
... | 3 | 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... | 1,676,876,809 | 2,147,483,647 | PyPy 3-64 | OK | TESTS | 56 | 154 | 1,331,200 | [target_lines, reduction_coefficient] = [int(i) for i in input().split()]
def calculate_lines(initial_lines, reduction_coefficient):
res = 0
while initial_lines > 0:
res += initial_lines
initial_lines //= reduction_coefficient
return res
left = 0
right = target_lines
while left <= right:
mid = left + (right... | 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
[target_lines, reduction_coefficient] = [int(i) for i in input().split()]
def calculate_lines(initial_lines, reduction_coefficient):
res = 0
while initial_lines > 0:
res += initial_lines
initial_lines //= reduction_coefficient
return res
left = 0
right = target_lines
while left <= right:
mid = lef... | 3 | MatrixStudio/Codeforces-Python-Submissions | |
567 | A | Lineland Mail | PROGRAMMING | 900 | [
"greedy",
"implementation"
] | null | null | All cities of Lineland are located on the *Ox* coordinate axis. Thus, each city is associated with its position *x**i* — a coordinate on the *Ox* axis. No two cities are located at a single point.
Lineland residents love to send letters to each other. A person may send a letter only if the recipient lives in another c... | The first line of the input contains integer *n* (2<=≤<=*n*<=≤<=105) — the number of cities in Lineland. The second line contains the sequence of *n* distinct integers *x*1,<=*x*2,<=...,<=*x**n* (<=-<=109<=≤<=*x**i*<=≤<=109), where *x**i* is the *x*-coordinate of the *i*-th city. All the *x**i*'s are distinct and follo... | Print *n* lines, the *i*-th line must contain two integers *min**i*,<=*max**i*, separated by a space, where *min**i* is the minimum cost of sending a letter from the *i*-th city, and *max**i* is the maximum cost of sending a letter from the *i*-th city. | [
"4\n-5 -2 2 7\n",
"2\n-1 1\n"
] | [
"3 12\n3 9\n4 7\n5 12\n",
"2 2\n2 2\n"
] | none | 500 | [
{
"input": "4\n-5 -2 2 7",
"output": "3 12\n3 9\n4 7\n5 12"
},
{
"input": "2\n-1 1",
"output": "2 2\n2 2"
},
{
"input": "3\n-1 0 1",
"output": "1 2\n1 1\n1 2"
},
{
"input": "4\n-1 0 1 3",
"output": "1 4\n1 3\n1 2\n2 4"
},
{
"input": "3\n-1000000000 0 1000000000",
... | 1,663,180,534 | 2,147,483,647 | PyPy 3-64 | OK | TESTS | 54 | 202 | 14,438,400 | n = int(input())
x = list(map(int, input().split()))
for i in range(n):
if i == 0:
mn = x[i + 1] - x[i]
elif i == n - 1:
mn = x[i] - x[i - 1]
else:
mn = min(x[i + 1] - x[i], x[i] - x[i - 1])
mx = max(x[n - 1] - x[i], x[i] - x[0])
print(mn, mx) | Title: Lineland Mail
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
All cities of Lineland are located on the *Ox* coordinate axis. Thus, each city is associated with its position *x**i* — a coordinate on the *Ox* axis. No two cities are located at a single point.
Lineland residents love... | ```python
n = int(input())
x = list(map(int, input().split()))
for i in range(n):
if i == 0:
mn = x[i + 1] - x[i]
elif i == n - 1:
mn = x[i] - x[i - 1]
else:
mn = min(x[i + 1] - x[i], x[i] - x[i - 1])
mx = max(x[n - 1] - x[i], x[i] - x[0])
print(mn, mx)
``` | 3 | MatrixStudio/Codeforces-Python-Submissions | |
768 | A | Oath of the Night's Watch | PROGRAMMING | 900 | [
"constructive algorithms",
"sortings"
] | null | null | "Night gathers, and now my watch begins. It shall not end until my death. I shall take no wife, hold no lands, father no children. I shall wear no crowns and win no glory. I shall live and die at my post. I am the sword in the darkness. I am the watcher on the walls. I am the shield that guards the realms of men. I ple... | First line consists of a single integer *n* (1<=≤<=*n*<=≤<=105) — the number of stewards with Jon Snow.
Second line consists of *n* space separated integers *a*1,<=*a*2,<=...,<=*a**n* (0<=≤<=*a**i*<=≤<=109) representing the values assigned to the stewards. | Output a single integer representing the number of stewards which Jon will feed. | [
"2\n1 5\n",
"3\n1 2 5\n"
] | [
"0",
"1"
] | In the first sample, Jon Snow cannot support steward with strength 1 because there is no steward with strength less than 1 and he cannot support steward with strength 5 because there is no steward with strength greater than 5.
In the second sample, Jon Snow can support steward with strength 2 because there are steward... | 500 | [
{
"input": "2\n1 5",
"output": "0"
},
{
"input": "3\n1 2 5",
"output": "1"
},
{
"input": "4\n1 2 3 4",
"output": "2"
},
{
"input": "8\n7 8 9 4 5 6 1 2",
"output": "6"
},
{
"input": "1\n1",
"output": "0"
},
{
"input": "1\n100",
"output": "0"
},
... | 1,678,451,214 | 2,147,483,647 | Python 3 | WRONG_ANSWER | TESTS | 9 | 77 | 10,547,200 | n = int(input())
arr = map(int,input().split())
sarr = set(arr)
if(len(sarr)<=2):print(0)
else:
print(n-2)
| Title: Oath of the Night's Watch
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
"Night gathers, and now my watch begins. It shall not end until my death. I shall take no wife, hold no lands, father no children. I shall wear no crowns and win no glory. I shall live and die at my post. I am... | ```python
n = int(input())
arr = map(int,input().split())
sarr = set(arr)
if(len(sarr)<=2):print(0)
else:
print(n-2)
``` | 0 | MatrixStudio/Codeforces-Python-Submissions | |
284 | A | Cows and Primitive Roots | PROGRAMMING | 1,400 | [
"implementation",
"math",
"number theory"
] | null | null | The cows have just learned what a primitive root is! Given a prime *p*, a primitive root is an integer *x* (1<=≤<=*x*<=<<=*p*) such that none of integers *x*<=-<=1,<=*x*2<=-<=1,<=...,<=*x**p*<=-<=2<=-<=1 are divisible by *p*, but *x**p*<=-<=1<=-<=1 is.
Unfortunately, computing primitive roots can be time consumin... | The input contains a single line containing an integer *p* (2<=≤<=*p*<=<<=2000). It is guaranteed that *p* is a prime. | Output on a single line the number of primitive roots . | [
"3\n",
"5\n"
] | [
"1\n",
"2\n"
] | The only primitive root <img align="middle" class="tex-formula" src="https://espresso.codeforces.com/3722298ba062e95b18705d1253eb4e5d31e3b2d1.png" style="max-width: 100.0%;max-height: 100.0%;"/> is 2.
The primitive roots <img align="middle" class="tex-formula" src="https://espresso.codeforces.com/1d85c6a17ef1c42b53cf9... | 500 | [
{
"input": "3",
"output": "1"
},
{
"input": "5",
"output": "2"
},
{
"input": "7",
"output": "2"
},
{
"input": "11",
"output": "4"
},
{
"input": "17",
"output": "8"
},
{
"input": "19",
"output": "6"
},
{
"input": "1583",
"output": "672"
... | 1,613,842,963 | 2,147,483,647 | PyPy 3 | TIME_LIMIT_EXCEEDED | TESTS | 6 | 2,000 | 1,740,800 | p = int(input())
arr = [i for i in range(2, p) if ((i**(p-1)) - 1)%p == 0 ]
arr_no = []
for i in arr:
count = 0
for j in range(1, p-1):
if ((i**j) - 1)%p != 0:
count += 1
if count == p - 2:
arr_no.append(i)
print(len(arr_no)) | Title: Cows and Primitive Roots
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
The cows have just learned what a primitive root is! Given a prime *p*, a primitive root is an integer *x* (1<=≤<=*x*<=<<=*p*) such that none of integers *x*<=-<=1,<=*x*2<=-<=1,<=...,<=*x**p*<=-<=2<=-<=1 ar... | ```python
p = int(input())
arr = [i for i in range(2, p) if ((i**(p-1)) - 1)%p == 0 ]
arr_no = []
for i in arr:
count = 0
for j in range(1, p-1):
if ((i**j) - 1)%p != 0:
count += 1
if count == p - 2:
arr_no.append(i)
print(len(arr_no))
``` | 0 | MatrixStudio/Codeforces-Python-Submissions | |
916 | A | Jamie and Alarm Snooze | PROGRAMMING | 900 | [
"brute force",
"implementation",
"math"
] | null | null | Jamie loves sleeping. One day, he decides that he needs to wake up at exactly *hh*:<=*mm*. However, he hates waking up, so he wants to make waking up less painful by setting the alarm at a lucky time. He will then press the snooze button every *x* minutes until *hh*:<=*mm* is reached, and only then he will wake up. He ... | The first line contains a single integer *x* (1<=≤<=*x*<=≤<=60).
The second line contains two two-digit integers, *hh* and *mm* (00<=≤<=*hh*<=≤<=23,<=00<=≤<=*mm*<=≤<=59). | Print the minimum number of times he needs to press the button. | [
"3\n11 23\n",
"5\n01 07\n"
] | [
"2\n",
"0\n"
] | In the first sample, Jamie needs to wake up at 11:23. So, he can set his alarm at 11:17. He would press the snooze button when the alarm rings at 11:17 and at 11:20.
In the second sample, Jamie can set his alarm at exactly at 01:07 which is lucky. | 500 | [
{
"input": "3\n11 23",
"output": "2"
},
{
"input": "5\n01 07",
"output": "0"
},
{
"input": "34\n09 24",
"output": "3"
},
{
"input": "2\n14 37",
"output": "0"
},
{
"input": "14\n19 54",
"output": "9"
},
{
"input": "42\n15 44",
"output": "12"
},
... | 1,516,376,102 | 3,602 | Python 3 | OK | TESTS | 254 | 77 | 5,632,000 | t=int(input())
n,m=input().split()
p,k=int(n),int(m)
d=0
s=0
l=0
while d!=1:
if k>10:
if str(k)[0]=='7' or str(k)[1]=='7':
if s%t==0:
print(s//t)
l=1
d=1
break
elif k<10:
if str(k)[0]=='7':
if s%t==0:
... | Title: Jamie and Alarm Snooze
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Jamie loves sleeping. One day, he decides that he needs to wake up at exactly *hh*:<=*mm*. However, he hates waking up, so he wants to make waking up less painful by setting the alarm at a lucky time. He will the... | ```python
t=int(input())
n,m=input().split()
p,k=int(n),int(m)
d=0
s=0
l=0
while d!=1:
if k>10:
if str(k)[0]=='7' or str(k)[1]=='7':
if s%t==0:
print(s//t)
l=1
d=1
break
elif k<10:
if str(k)[0]=='7':
if s%t==... | 3 | MatrixStudio/Codeforces-Python-Submissions | |
712 | B | Memory and Trident | PROGRAMMING | 1,100 | [
"implementation",
"strings"
] | null | null | Memory is performing a walk on the two-dimensional plane, starting at the origin. He is given a string *s* with his directions for motion:
- An 'L' indicates he should move one unit left. - An 'R' indicates he should move one unit right. - A 'U' indicates he should move one unit up. - A 'D' indicates he should move... | The first and only line contains the string *s* (1<=≤<=|*s*|<=≤<=100<=000) — the instructions Memory is given. | If there is a string satisfying the conditions, output a single integer — the minimum number of edits required. In case it's not possible to change the sequence in such a way that it will bring Memory to to the origin, output -1. | [
"RRU\n",
"UDUR\n",
"RUUR\n"
] | [
"-1\n",
"1\n",
"2\n"
] | In the first sample test, Memory is told to walk right, then right, then up. It is easy to see that it is impossible to edit these instructions to form a valid walk.
In the second sample test, Memory is told to walk up, then down, then up, then right. One possible solution is to change *s* to "LDUR". This string uses ... | 1,000 | [
{
"input": "RRU",
"output": "-1"
},
{
"input": "UDUR",
"output": "1"
},
{
"input": "RUUR",
"output": "2"
},
{
"input": "DDDD",
"output": "2"
},
{
"input": "RRRR",
"output": "2"
},
{
"input": "RRRUUD",
"output": "2"
},
{
"input": "UDURLRDURL... | 1,473,529,081 | 3,181 | Python 3 | OK | TESTS | 75 | 77 | 307,200 | def compute():
s = input()
if len(s)%2 == 1:return -1
d = {'R':0,'L':0,'U':0,'D':0}
for x in s:d[x] += 1
return (abs(d['L']-d['R']) + abs(d['U']-d['D']))//2
print(compute())
| Title: Memory and Trident
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Memory is performing a walk on the two-dimensional plane, starting at the origin. He is given a string *s* with his directions for motion:
- An 'L' indicates he should move one unit left. - An 'R' indicates he shou... | ```python
def compute():
s = input()
if len(s)%2 == 1:return -1
d = {'R':0,'L':0,'U':0,'D':0}
for x in s:d[x] += 1
return (abs(d['L']-d['R']) + abs(d['U']-d['D']))//2
print(compute())
``` | 3 | MatrixStudio/Codeforces-Python-Submissions | |
486 | A | Calculating Function | PROGRAMMING | 800 | [
"implementation",
"math"
] | null | null | For a positive integer *n* let's define a function *f*:
*f*(*n*)<==<=<=-<=1<=+<=2<=-<=3<=+<=..<=+<=(<=-<=1)*n**n*
Your task is to calculate *f*(*n*) for a given integer *n*. | The single line contains the positive integer *n* (1<=≤<=*n*<=≤<=1015). | Print *f*(*n*) in a single line. | [
"4\n",
"5\n"
] | [
"2\n",
"-3\n"
] | *f*(4) = - 1 + 2 - 3 + 4 = 2
*f*(5) = - 1 + 2 - 3 + 4 - 5 = - 3 | 500 | [
{
"input": "4",
"output": "2"
},
{
"input": "5",
"output": "-3"
},
{
"input": "1000000000",
"output": "500000000"
},
{
"input": "1000000001",
"output": "-500000001"
},
{
"input": "1000000000000000",
"output": "500000000000000"
},
{
"input": "100",
... | 1,692,853,501 | 2,147,483,647 | PyPy 3-64 | OK | TESTS | 39 | 46 | 0 | n=int(input())
if ((n%2)==0):
print(int(n/2))
else:
print(int((-1)*((n+1)/2))) | Title: Calculating Function
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
For a positive integer *n* let's define a function *f*:
*f*(*n*)<==<=<=-<=1<=+<=2<=-<=3<=+<=..<=+<=(<=-<=1)*n**n*
Your task is to calculate *f*(*n*) for a given integer *n*.
Input Specification:
The single line... | ```python
n=int(input())
if ((n%2)==0):
print(int(n/2))
else:
print(int((-1)*((n+1)/2)))
``` | 3 | 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"
},
... | 1,678,300,347 | 2,147,483,647 | Python 3 | RUNTIME_ERROR | TESTS | 0 | 30 | 0 | print(4, n-4) | 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
print(4, n-4)
``` | -1 | MatrixStudio/Codeforces-Python-Submissions | |
898 | A | Rounding | PROGRAMMING | 800 | [
"implementation",
"math"
] | null | null | Vasya has a non-negative integer *n*. He wants to round it to nearest integer, which ends up with 0. If *n* already ends up with 0, Vasya considers it already rounded.
For example, if *n*<==<=4722 answer is 4720. If *n*<==<=5 Vasya can round it to 0 or to 10. Both ways are correct.
For given *n* find out to which int... | The first line contains single integer *n* (0<=≤<=*n*<=≤<=109) — number that Vasya has. | Print result of rounding *n*. Pay attention that in some cases answer isn't unique. In that case print any correct answer. | [
"5\n",
"113\n",
"1000000000\n",
"5432359\n"
] | [
"0\n",
"110\n",
"1000000000\n",
"5432360\n"
] | In the first example *n* = 5. Nearest integers, that ends up with zero are 0 and 10. Any of these answers is correct, so you can print 0 or 10. | 500 | [
{
"input": "5",
"output": "0"
},
{
"input": "113",
"output": "110"
},
{
"input": "1000000000",
"output": "1000000000"
},
{
"input": "5432359",
"output": "5432360"
},
{
"input": "999999994",
"output": "999999990"
},
{
"input": "10",
"output": "10"
... | 1,688,572,039 | 2,147,483,647 | Python 3 | OK | TESTS | 64 | 46 | 0 | n = int(input())
m = round(n/10)
print(m*10) | Title: Rounding
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Vasya has a non-negative integer *n*. He wants to round it to nearest integer, which ends up with 0. If *n* already ends up with 0, Vasya considers it already rounded.
For example, if *n*<==<=4722 answer is 4720. If *n*<==<=5... | ```python
n = int(input())
m = round(n/10)
print(m*10)
``` | 3 | MatrixStudio/Codeforces-Python-Submissions | |
633 | A | Ebony and Ivory | PROGRAMMING | 1,100 | [
"brute force",
"math",
"number theory"
] | null | null | Dante is engaged in a fight with "The Savior". Before he can fight it with his sword, he needs to break its shields. He has two guns, Ebony and Ivory, each of them is able to perform any non-negative number of shots.
For every bullet that hits the shield, Ebony deals *a* units of damage while Ivory deals *b* units of ... | The first line of the input contains three integers *a*, *b*, *c* (1<=≤<=*a*,<=*b*<=≤<=100,<=1<=≤<=*c*<=≤<=10<=000) — the number of units of damage dealt by Ebony gun and Ivory gun, and the total number of damage required to break the shield, respectively. | Print "Yes" (without quotes) if Dante can deal exactly *c* damage to the shield and "No" (without quotes) otherwise. | [
"4 6 15\n",
"3 2 7\n",
"6 11 6\n"
] | [
"No\n",
"Yes\n",
"Yes\n"
] | In the second sample, Dante can fire 1 bullet from Ebony and 2 from Ivory to deal exactly 1·3 + 2·2 = 7 damage. In the third sample, Dante can fire 1 bullet from ebony and no bullets from ivory to do 1·6 + 0·11 = 6 damage. | 250 | [
{
"input": "4 6 15",
"output": "No"
},
{
"input": "3 2 7",
"output": "Yes"
},
{
"input": "6 11 6",
"output": "Yes"
},
{
"input": "3 12 15",
"output": "Yes"
},
{
"input": "5 5 10",
"output": "Yes"
},
{
"input": "6 6 7",
"output": "No"
},
{
"... | 1,677,141,068 | 2,147,483,647 | Python 3 | WRONG_ANSWER | TESTS | 10 | 31 | 0 | a,b,c=map(int,(input().split()))
if (abs(c-(a+b)) % a== 0 or abs(c-(a+b)) % b==0):
print("Yes")
else:
print("No") | Title: Ebony and Ivory
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Dante is engaged in a fight with "The Savior". Before he can fight it with his sword, he needs to break its shields. He has two guns, Ebony and Ivory, each of them is able to perform any non-negative number of shots.
F... | ```python
a,b,c=map(int,(input().split()))
if (abs(c-(a+b)) % a== 0 or abs(c-(a+b)) % b==0):
print("Yes")
else:
print("No")
``` | 0 | MatrixStudio/Codeforces-Python-Submissions | |
755 | B | PolandBall and Game | PROGRAMMING | 1,100 | [
"binary search",
"data structures",
"games",
"greedy",
"sortings",
"strings"
] | null | null | PolandBall is playing a game with EnemyBall. The rules are simple. Players have to say words in turns. You cannot say a word which was already said. PolandBall starts. The Ball which can't say a new word loses.
You're given two lists of words familiar to PolandBall and EnemyBall. Can you determine who wins the game, i... | The first input line contains two integers *n* and *m* (1<=≤<=*n*,<=*m*<=≤<=103) — number of words PolandBall and EnemyBall know, respectively.
Then *n* strings follow, one per line — words familiar to PolandBall.
Then *m* strings follow, one per line — words familiar to EnemyBall.
Note that one Ball cannot know a w... | In a single line of print the answer — "YES" if PolandBall wins and "NO" otherwise. Both Balls play optimally. | [
"5 1\npolandball\nis\na\ncool\ncharacter\nnope\n",
"2 2\nkremowka\nwadowicka\nkremowka\nwiedenska\n",
"1 2\na\na\nb\n"
] | [
"YES",
"YES",
"NO"
] | In the first example PolandBall knows much more words and wins effortlessly.
In the second example if PolandBall says kremowka first, then EnemyBall cannot use that word anymore. EnemyBall can only say wiedenska. PolandBall says wadowicka and wins. | 1,000 | [
{
"input": "5 1\npolandball\nis\na\ncool\ncharacter\nnope",
"output": "YES"
},
{
"input": "2 2\nkremowka\nwadowicka\nkremowka\nwiedenska",
"output": "YES"
},
{
"input": "1 2\na\na\nb",
"output": "NO"
},
{
"input": "2 2\na\nb\nb\nc",
"output": "YES"
},
{
"input": "... | 1,630,511,054 | 2,147,483,647 | PyPy 3 | OK | TESTS | 33 | 186 | 26,112,000 | n, m = map(int, input().split())
s1 = {input() for x in range(n)}
s2 = {input() for y in range(m)}
s3 = s1 & s2
if len(s3) % 2 == 0:
turn = 0
else:
turn = 1
ln1 = len(s1) - len(s3)
ln2 = len(s2) - len(s3)
if ln1 > ln2 or ln1 == ln2 and turn == 1:
print('YES')
elif ln2 > ln1 or ln1 == ln2 and turn == 0:
... | Title: PolandBall and Game
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
PolandBall is playing a game with EnemyBall. The rules are simple. Players have to say words in turns. You cannot say a word which was already said. PolandBall starts. The Ball which can't say a new word loses.
You... | ```python
n, m = map(int, input().split())
s1 = {input() for x in range(n)}
s2 = {input() for y in range(m)}
s3 = s1 & s2
if len(s3) % 2 == 0:
turn = 0
else:
turn = 1
ln1 = len(s1) - len(s3)
ln2 = len(s2) - len(s3)
if ln1 > ln2 or ln1 == ln2 and turn == 1:
print('YES')
elif ln2 > ln1 or ln1 == ln2 and turn... | 3 | MatrixStudio/Codeforces-Python-Submissions | |
717 | C | Potions Homework | PROGRAMMING | 1,200 | [
"implementation",
"sortings"
] | null | null | Harry Water, Ronaldo, Her-my-oh-knee and their friends have started a new school year at their MDCS School of Speechcraft and Misery. At the time, they are very happy to have seen each other after a long time. The sun is shining, birds are singing, flowers are blooming, and their Potions class teacher, professor Snipe ... | The first line of input contains integer *n* (1<=≤<=*n*<=≤<=100<=000) — the number of tasks. The next *n* lines contain exactly one integer number *a**i* (1<=≤<=*a**i*<=≤<=100<=000) — both the difficulty of the initial task and the laziness of the *i*-th students. | Print the minimum total time to finish all tasks modulo 10<=007. | [
"2\n1\n3\n"
] | [
"6\n"
] | In the first sample, if the students switch their tasks, they will be able to finish them in 3 + 3 = 6 time units. | 0 | [
{
"input": "2\n1\n3",
"output": "6"
}
] | 1,624,445,485 | 2,147,483,647 | PyPy 3 | RUNTIME_ERROR | TESTS | 2 | 467 | 6,860,800 | mod = 10**4 + 7
n = int(input())
nn = n
ml = []
while nn:
nn -= 1
ml.append(int(input()))
if n % 2 == 0:
c = 0
for i in range(n//2):
c += 2*(ml[i]*ml[n-1-i])
print(c % mod)
else:
temp = ml[n//2]
c = temp**2
ml.remove(temp)
for i in range(n//2):
c += 2... | Title: Potions Homework
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Harry Water, Ronaldo, Her-my-oh-knee and their friends have started a new school year at their MDCS School of Speechcraft and Misery. At the time, they are very happy to have seen each other after a long time. The sun ... | ```python
mod = 10**4 + 7
n = int(input())
nn = n
ml = []
while nn:
nn -= 1
ml.append(int(input()))
if n % 2 == 0:
c = 0
for i in range(n//2):
c += 2*(ml[i]*ml[n-1-i])
print(c % mod)
else:
temp = ml[n//2]
c = temp**2
ml.remove(temp)
for i in range(n//2):
... | -1 | MatrixStudio/Codeforces-Python-Submissions | |
0 | none | none | none | 0 | [
"none"
] | null | null | There is a right triangle with legs of length *a* and *b*. Your task is to determine whether it is possible to locate the triangle on the plane in such a way that none of its sides is parallel to the coordinate axes. All the vertices must have integer coordinates. If there exists such a location, you have to output the... | The first line contains two integers *a*,<=*b* (1<=≤<=*a*,<=*b*<=≤<=1000), separated by a single space. | In the first line print either "YES" or "NO" (without the quotes) depending on whether the required location exists. If it does, print in the next three lines three pairs of integers — the coordinates of the triangle vertices, one pair per line. The coordinates must be integers, not exceeding 109 in their absolute valu... | [
"1 1\n",
"5 5\n",
"5 10\n"
] | [
"NO\n",
"YES\n2 1\n5 5\n-2 4\n",
"YES\n-10 4\n-2 -2\n1 2\n"
] | none | 0 | [
{
"input": "1 1",
"output": "NO"
},
{
"input": "5 5",
"output": "YES\n2 1\n5 5\n-2 4"
},
{
"input": "5 10",
"output": "YES\n-10 4\n-2 -2\n1 2"
},
{
"input": "2 2",
"output": "NO"
},
{
"input": "5 6",
"output": "NO"
},
{
"input": "5 11",
"output": "... | 1,442,855,861 | 2,147,483,647 | PyPy 3 | WRONG_ANSWER | TESTS | 9 | 93 | 409,600 | import math
x,y = map(int, input().split())
val1 = 0
val2 = 0
val3 = 0
val4 = 0
for i in range(1, 40):
if x*x-i*i>0:
d = x*x-i*i
b = 0
for j in range(1,40):
if j*j==d:
b = j
break
if b==0: continue
val1 = i
v... | Title: none
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
There is a right triangle with legs of length *a* and *b*. Your task is to determine whether it is possible to locate the triangle on the plane in such a way that none of its sides is parallel to the coordinate axes. All the verti... | ```python
import math
x,y = map(int, input().split())
val1 = 0
val2 = 0
val3 = 0
val4 = 0
for i in range(1, 40):
if x*x-i*i>0:
d = x*x-i*i
b = 0
for j in range(1,40):
if j*j==d:
b = j
break
if b==0: continue
val1 = i
... | 0 | MatrixStudio/Codeforces-Python-Submissions | |
758 | A | Holiday Of Equality | PROGRAMMING | 800 | [
"implementation",
"math"
] | null | null | In Berland it is the holiday of equality. In honor of the holiday the king decided to equalize the welfare of all citizens in Berland by the expense of the state treasury.
Totally in Berland there are *n* citizens, the welfare of each of them is estimated as the integer in *a**i* burles (burle is the currency in Berl... | The first line contains the integer *n* (1<=≤<=*n*<=≤<=100) — the number of citizens in the kingdom.
The second line contains *n* integers *a*1,<=*a*2,<=...,<=*a**n*, where *a**i* (0<=≤<=*a**i*<=≤<=106) — the welfare of the *i*-th citizen. | In the only line print the integer *S* — the minimum number of burles which are had to spend. | [
"5\n0 1 2 3 4\n",
"5\n1 1 0 1 1\n",
"3\n1 3 1\n",
"1\n12\n"
] | [
"10",
"1",
"4",
"0"
] | In the first example if we add to the first citizen 4 burles, to the second 3, to the third 2 and to the fourth 1, then the welfare of all citizens will equal 4.
In the second example it is enough to give one burle to the third citizen.
In the third example it is necessary to give two burles to the first and the thi... | 500 | [
{
"input": "5\n0 1 2 3 4",
"output": "10"
},
{
"input": "5\n1 1 0 1 1",
"output": "1"
},
{
"input": "3\n1 3 1",
"output": "4"
},
{
"input": "1\n12",
"output": "0"
},
{
"input": "3\n1 2 3",
"output": "3"
},
{
"input": "14\n52518 718438 358883 462189 853... | 1,681,649,200 | 2,147,483,647 | Python 3 | OK | TESTS | 41 | 77 | 0 | n=int(input())
a=[int(i) for i in input().split()][:n]
x=max(a)
count=0
for i in a:
count=count+x-i
print(count)
| Title: Holiday Of Equality
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
In Berland it is the holiday of equality. In honor of the holiday the king decided to equalize the welfare of all citizens in Berland by the expense of the state treasury.
Totally in Berland there are *n* citizens... | ```python
n=int(input())
a=[int(i) for i in input().split()][:n]
x=max(a)
count=0
for i in a:
count=count+x-i
print(count)
``` | 3 | MatrixStudio/Codeforces-Python-Submissions | |
552 | B | Vanya and Books | PROGRAMMING | 1,200 | [
"implementation",
"math"
] | null | null | Vanya got an important task — he should enumerate books in the library and label each book with its number. Each of the *n* books should be assigned with a number from 1 to *n*. Naturally, distinct books should be assigned distinct numbers.
Vanya wants to know how many digits he will have to write down as he labels th... | The first line contains integer *n* (1<=≤<=*n*<=≤<=109) — the number of books in the library. | Print the number of digits needed to number all the books. | [
"13\n",
"4\n"
] | [
"17\n",
"4\n"
] | Note to the first test. The books get numbers 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, which totals to 17 digits.
Note to the second sample. The books get numbers 1, 2, 3, 4, which totals to 4 digits. | 1,000 | [
{
"input": "13",
"output": "17"
},
{
"input": "4",
"output": "4"
},
{
"input": "100",
"output": "192"
},
{
"input": "99",
"output": "189"
},
{
"input": "1000000000",
"output": "8888888899"
},
{
"input": "1000000",
"output": "5888896"
},
{
"... | 1,478,509,663 | 2,147,483,647 | PyPy 3 | OK | TESTS | 55 | 140 | 0 | n=input()
p=len(n)
print((int(n)+1)*p-int('1'*p)) | Title: Vanya and Books
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Vanya got an important task — he should enumerate books in the library and label each book with its number. Each of the *n* books should be assigned with a number from 1 to *n*. Naturally, distinct books should be assig... | ```python
n=input()
p=len(n)
print((int(n)+1)*p-int('1'*p))
``` | 3 | MatrixStudio/Codeforces-Python-Submissions | |
26 | B | Regular Bracket Sequence | PROGRAMMING | 1,400 | [
"greedy"
] | B. Regular Bracket Sequence | 5 | 256 | A bracket sequence is called regular if it is possible to obtain correct arithmetic expression by inserting characters «+» and «1» into this sequence. For example, sequences «(())()», «()» and «(()(()))» are regular, while «)(», «(()» and «(()))(» are not.
One day Johnny got bracket sequence. He decided to remove some... | Input consists of a single line with non-empty string of «(» and «)» characters. Its length does not exceed 106. | Output the maximum possible length of a regular bracket sequence. | [
"(()))(\n",
"((()())\n"
] | [
"4\n",
"6\n"
] | none | 1,000 | [
{
"input": "(()))(",
"output": "4"
},
{
"input": "((()())",
"output": "6"
},
{
"input": "(",
"output": "0"
},
{
"input": ")",
"output": "0"
},
{
"input": ")(()(",
"output": "2"
},
{
"input": "))))))(",
"output": "0"
},
{
"input": "()()(()((... | 1,689,442,409 | 2,147,483,647 | Python 3 | WRONG_ANSWER | TESTS | 0 | 30 | 0 | def maximum_regular_length(sequence):
count = 0
open_count = 0
for char in sequence:
if char == '(':
open_count += 1
elif char == ')' and open_count > 0:
open_count -= 1
count += 2
return count
| Title: Regular Bracket Sequence
Time Limit: 5 seconds
Memory Limit: 256 megabytes
Problem Description:
A bracket sequence is called regular if it is possible to obtain correct arithmetic expression by inserting characters «+» and «1» into this sequence. For example, sequences «(())()», «()» and «(()(()))» are regula... | ```python
def maximum_regular_length(sequence):
count = 0
open_count = 0
for char in sequence:
if char == '(':
open_count += 1
elif char == ')' and open_count > 0:
open_count -= 1
count += 2
return count
``` | 0 | MatrixStudio/Codeforces-Python-Submissions |
505 | A | Mr. Kitayuta's Gift | PROGRAMMING | 1,100 | [
"brute force",
"implementation",
"strings"
] | null | null | Mr. Kitayuta has kindly given you a string *s* consisting of lowercase English letters. You are asked to insert exactly one lowercase English letter into *s* to make it a palindrome. A palindrome is a string that reads the same forward and backward. For example, "noon", "testset" and "a" are all palindromes, while "tes... | The only line of the input contains a string *s* (1<=≤<=|*s*|<=≤<=10). Each character in *s* is a lowercase English letter. | If it is possible to turn *s* into a palindrome by inserting one lowercase English letter, print the resulting string in a single line. Otherwise, print "NA" (without quotes, case-sensitive). In case there is more than one solution, any of them will be accepted. | [
"revive\n",
"ee\n",
"kitayuta\n"
] | [
"reviver\n",
"eye",
"NA\n"
] | For the first sample, insert 'r' to the end of "revive" to obtain a palindrome "reviver".
For the second sample, there is more than one solution. For example, "eve" will also be accepted.
For the third sample, it is not possible to turn "kitayuta" into a palindrome by just inserting one letter. | 500 | [
{
"input": "revive",
"output": "reviver"
},
{
"input": "ee",
"output": "eee"
},
{
"input": "kitayuta",
"output": "NA"
},
{
"input": "evima",
"output": "NA"
},
{
"input": "a",
"output": "aa"
},
{
"input": "yutampo",
"output": "NA"
},
{
"inpu... | 1,421,586,715 | 715 | Python 3 | OK | TESTS | 40 | 77 | 0 | def is_palindrome(s):
return s == s[::-1]
s = input()
letters = set(s)
found = False
for letter in letters:
for i in range(len(s)+1):
temp = s[:i] + letter + s[i:]
if is_palindrome(temp):
print(temp)
found = True
break
if found:
break
if not found... | Title: Mr. Kitayuta's Gift
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Mr. Kitayuta has kindly given you a string *s* consisting of lowercase English letters. You are asked to insert exactly one lowercase English letter into *s* to make it a palindrome. A palindrome is a string that re... | ```python
def is_palindrome(s):
return s == s[::-1]
s = input()
letters = set(s)
found = False
for letter in letters:
for i in range(len(s)+1):
temp = s[:i] + letter + s[i:]
if is_palindrome(temp):
print(temp)
found = True
break
if found:
break
if... | 3 | MatrixStudio/Codeforces-Python-Submissions | |
653 | A | Bear and Three Balls | PROGRAMMING | 900 | [
"brute force",
"implementation",
"sortings"
] | null | null | Limak is a little polar bear. He has *n* balls, the *i*-th ball has size *t**i*.
Limak wants to give one ball to each of his three friends. Giving gifts isn't easy — there are two rules Limak must obey to make friends happy:
- No two friends can get balls of the same size. - No two friends can get balls of sizes th... | The first line of the input contains one integer *n* (3<=≤<=*n*<=≤<=50) — the number of balls Limak has.
The second line contains *n* integers *t*1,<=*t*2,<=...,<=*t**n* (1<=≤<=*t**i*<=≤<=1000) where *t**i* denotes the size of the *i*-th ball. | Print "YES" (without quotes) if Limak can choose three balls of distinct sizes, such that any two of them differ by no more than 2. Otherwise, print "NO" (without quotes). | [
"4\n18 55 16 17\n",
"6\n40 41 43 44 44 44\n",
"8\n5 972 3 4 1 4 970 971\n"
] | [
"YES\n",
"NO\n",
"YES\n"
] | In the first sample, there are 4 balls and Limak is able to choose three of them to satisfy the rules. He must must choose balls with sizes 18, 16 and 17.
In the second sample, there is no way to give gifts to three friends without breaking the rules.
In the third sample, there is even more than one way to choose bal... | 500 | [
{
"input": "4\n18 55 16 17",
"output": "YES"
},
{
"input": "6\n40 41 43 44 44 44",
"output": "NO"
},
{
"input": "8\n5 972 3 4 1 4 970 971",
"output": "YES"
},
{
"input": "3\n959 747 656",
"output": "NO"
},
{
"input": "4\n1 2 2 3",
"output": "YES"
},
{
... | 1,636,211,196 | 2,147,483,647 | Python 3 | OK | TESTS | 84 | 46 | 4,505,600 | #!/usr/bin/env python
# coding=utf-8
'''
Author: Deean
Date: 2021-11-06 22:54:59
LastEditTime: 2021-11-06 23:05:26
Description: Bear and Three Balls
FilePath: CF653A.py
'''
def func():
_ = int(input())
balls = sorted(list(set(map(int, input().strip().split()))))
for i in range(2, len(balls)):
if ... | Title: Bear and Three Balls
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Limak is a little polar bear. He has *n* balls, the *i*-th ball has size *t**i*.
Limak wants to give one ball to each of his three friends. Giving gifts isn't easy — there are two rules Limak must obey to make fri... | ```python
#!/usr/bin/env python
# coding=utf-8
'''
Author: Deean
Date: 2021-11-06 22:54:59
LastEditTime: 2021-11-06 23:05:26
Description: Bear and Three Balls
FilePath: CF653A.py
'''
def func():
_ = int(input())
balls = sorted(list(set(map(int, input().strip().split()))))
for i in range(2, len(balls)):
... | 3 | MatrixStudio/Codeforces-Python-Submissions | |
797 | A | k-Factorization | PROGRAMMING | 1,100 | [
"implementation",
"math",
"number theory"
] | null | null | Given a positive integer *n*, find *k* integers (not necessary distinct) such that all these integers are strictly greater than 1, and their product is equal to *n*. | The first line contains two integers *n* and *k* (2<=≤<=*n*<=≤<=100000, 1<=≤<=*k*<=≤<=20). | If it's impossible to find the representation of *n* as a product of *k* numbers, print -1.
Otherwise, print *k* integers in any order. Their product must be equal to *n*. If there are multiple answers, print any of them. | [
"100000 2\n",
"100000 20\n",
"1024 5\n"
] | [
"2 50000 \n",
"-1\n",
"2 64 2 2 2 \n"
] | none | 0 | [
{
"input": "100000 2",
"output": "2 50000 "
},
{
"input": "100000 20",
"output": "-1"
},
{
"input": "1024 5",
"output": "2 64 2 2 2 "
},
{
"input": "100000 10",
"output": "2 2 2 2 2 5 5 5 5 5 "
},
{
"input": "99999 3",
"output": "3 813 41 "
},
{
"input... | 1,657,532,569 | 2,147,483,647 | Python 3 | WRONG_ANSWER | TESTS | 4 | 46 | 0 | n, h1 = map(int, input().split())
i = 2
L = []
while i * i <= n:
while n % i == 0:
L.append(i)
n = n // i
i = i + 1
if n > 1:
L.append(h1)
if len(L) < h1:
print(-1)
else:
while len(L) > h1:
h2 = L[0] * L[1]
del L[0]
L[0] = h2
for i in L:
print(i,e... | Title: k-Factorization
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Given a positive integer *n*, find *k* integers (not necessary distinct) such that all these integers are strictly greater than 1, and their product is equal to *n*.
Input Specification:
The first line contains two int... | ```python
n, h1 = map(int, input().split())
i = 2
L = []
while i * i <= n:
while n % i == 0:
L.append(i)
n = n // i
i = i + 1
if n > 1:
L.append(h1)
if len(L) < h1:
print(-1)
else:
while len(L) > h1:
h2 = L[0] * L[1]
del L[0]
L[0] = h2
for i in L:
... | 0 | MatrixStudio/Codeforces-Python-Submissions | |
987 | B | High School: Become Human | PROGRAMMING | 1,100 | [
"math"
] | null | null | Year 2118. Androids are in mass production for decades now, and they do all the work for humans. But androids have to go to school to be able to solve creative tasks. Just like humans before.
It turns out that high school struggles are not gone. If someone is not like others, he is bullied. Vasya-8800 is an economy-cl... | On the only line of input there are two integers $x$ and $y$ ($1 \le x, y \le 10^{9}$). | If $x^y < y^x$, then print '<' (without quotes). If $x^y > y^x$, then print '>' (without quotes). If $x^y = y^x$, then print '=' (without quotes). | [
"5 8\n",
"10 3\n",
"6 6\n"
] | [
">\n",
"<\n",
"=\n"
] | In the first example $5^8 = 5 \cdot 5 \cdot 5 \cdot 5 \cdot 5 \cdot 5 \cdot 5 \cdot 5 = 390625$, and $8^5 = 8 \cdot 8 \cdot 8 \cdot 8 \cdot 8 = 32768$. So you should print '>'.
In the second example $10^3 = 1000 < 3^{10} = 59049$.
In the third example $6^6 = 46656 = 6^6$. | 1,000 | [
{
"input": "5 8",
"output": ">"
},
{
"input": "10 3",
"output": "<"
},
{
"input": "6 6",
"output": "="
},
{
"input": "14 1",
"output": ">"
},
{
"input": "2 4",
"output": "="
},
{
"input": "987654321 123456987",
"output": "<"
},
{
"input": "... | 1,646,286,010 | 2,147,483,647 | PyPy 3-64 | WRONG_ANSWER | TESTS | 4 | 46 | 0 | import math
x,y=map(int,input().split())
if(x==y):
print("=")
elif ((y*math.log(x))< (x*math.log(y))):
print("<")
else:
print(">") | Title: High School: Become Human
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Year 2118. Androids are in mass production for decades now, and they do all the work for humans. But androids have to go to school to be able to solve creative tasks. Just like humans before.
It turns out tha... | ```python
import math
x,y=map(int,input().split())
if(x==y):
print("=")
elif ((y*math.log(x))< (x*math.log(y))):
print("<")
else:
print(">")
``` | 0 | MatrixStudio/Codeforces-Python-Submissions | |
60 | A | Where Are My Flakes? | PROGRAMMING | 1,300 | [
"implementation",
"two pointers"
] | A. Where Are My Flakes? | 2 | 256 | One morning the Cereal Guy found out that all his cereal flakes were gone. He found a note instead of them. It turned out that his smart roommate hid the flakes in one of *n* boxes. The boxes stand in one row, they are numbered from 1 to *n* from the left to the right. The roommate left hints like "Hidden to the left o... | The first line contains two integers *n* and *m* (1<=≤<=*n*<=≤<=1000,<=0<=≤<=*m*<=≤<=1000) which represent the number of boxes and the number of hints correspondingly. Next *m* lines contain hints like "To the left of *i*" and "To the right of *i*", where *i* is integer (1<=≤<=*i*<=≤<=*n*). The hints may coincide. | The answer should contain exactly one integer — the number of boxes that should necessarily be checked or "-1" if the hints are contradictory. | [
"2 1\nTo the left of 2\n",
"3 2\nTo the right of 1\nTo the right of 2\n",
"3 1\nTo the left of 3\n",
"3 2\nTo the left of 2\nTo the right of 1\n"
] | [
"1\n",
"1\n",
"2\n",
"-1\n"
] | none | 500 | [
{
"input": "2 1\nTo the left of 2",
"output": "1"
},
{
"input": "3 2\nTo the right of 1\nTo the right of 2",
"output": "1"
},
{
"input": "3 1\nTo the left of 3",
"output": "2"
},
{
"input": "3 2\nTo the left of 2\nTo the right of 1",
"output": "-1"
},
{
"input": "... | 1,582,908,890 | 2,147,483,647 | PyPy 3 | OK | TESTS | 54 | 372 | 1,740,800 | import sys
# input = lambda: sys.stdin.readline().rstrip()
n, m = map(int, input().split())
mi = 0
ma = n
for i in range(m):
mas = list(map(str, input().split()))
mas[-1] = int(mas[-1])
if mas[2] == "left":
if ma >= mas[-1]:
ma = mas[-1] - 1
else:
if mi < ... | Title: Where Are My Flakes?
Time Limit: 2 seconds
Memory Limit: 256 megabytes
Problem Description:
One morning the Cereal Guy found out that all his cereal flakes were gone. He found a note instead of them. It turned out that his smart roommate hid the flakes in one of *n* boxes. The boxes stand in one row, they are... | ```python
import sys
# input = lambda: sys.stdin.readline().rstrip()
n, m = map(int, input().split())
mi = 0
ma = n
for i in range(m):
mas = list(map(str, input().split()))
mas[-1] = int(mas[-1])
if mas[2] == "left":
if ma >= mas[-1]:
ma = mas[-1] - 1
else:
... | 3.903758 | MatrixStudio/Codeforces-Python-Submissions |
370 | A | Rook, Bishop and King | PROGRAMMING | 1,100 | [
"graphs",
"math",
"shortest paths"
] | null | null | Little Petya is learning to play chess. He has already learned how to move a king, a rook and a bishop. Let us remind you the rules of moving chess pieces. A chessboard is 64 square fields organized into an 8<=×<=8 table. A field is represented by a pair of integers (*r*,<=*c*) — the number of the row and the number of... | The input contains four integers *r*1,<=*c*1,<=*r*2,<=*c*2 (1<=≤<=*r*1,<=*c*1,<=*r*2,<=*c*2<=≤<=8) — the coordinates of the starting and the final field. The starting field doesn't coincide with the final one.
You can assume that the chessboard rows are numbered from top to bottom 1 through 8, and the columns are numb... | Print three space-separated integers: the minimum number of moves the rook, the bishop and the king (in this order) is needed to move from field (*r*1,<=*c*1) to field (*r*2,<=*c*2). If a piece cannot make such a move, print a 0 instead of the corresponding number. | [
"4 3 1 6\n",
"5 5 5 6\n"
] | [
"2 1 3\n",
"1 0 1\n"
] | none | 500 | [
{
"input": "4 3 1 6",
"output": "2 1 3"
},
{
"input": "5 5 5 6",
"output": "1 0 1"
},
{
"input": "1 1 8 8",
"output": "2 1 7"
},
{
"input": "1 1 8 1",
"output": "1 0 7"
},
{
"input": "1 1 1 8",
"output": "1 0 7"
},
{
"input": "8 1 1 1",
"output": "... | 1,690,642,083 | 2,147,483,647 | Python 3 | OK | TESTS | 42 | 46 | 0 | r1,c1,r2,c2=map(int,input().split())
if r1==r2 or c1==c2:
r=1
else:
r=2
if abs((r1+c1)-(r2+c2))%2==1:
b=0
elif abs(c2-c1)==abs(r2-r1):
b=1
else:
b=2
k=max(abs(c2-c1),abs(r2-r1))
print(r,b,k) | Title: Rook, Bishop and King
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Little Petya is learning to play chess. He has already learned how to move a king, a rook and a bishop. Let us remind you the rules of moving chess pieces. A chessboard is 64 square fields organized into an 8<=×<=... | ```python
r1,c1,r2,c2=map(int,input().split())
if r1==r2 or c1==c2:
r=1
else:
r=2
if abs((r1+c1)-(r2+c2))%2==1:
b=0
elif abs(c2-c1)==abs(r2-r1):
b=1
else:
b=2
k=max(abs(c2-c1),abs(r2-r1))
print(r,b,k)
``` | 3 | 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 ... | 1,696,256,959 | 2,147,483,647 | Python 3 | OK | TESTS | 69 | 46 | 0 | mi=0
ch=0
for i in range(int(input())):
a=list(map(int,input().split()))
if a[0]>a[1]:
mi+=1
elif a[0]<a[1]:
ch+=1
else:
continue
if mi<ch:
print("Chris")
elif mi>ch:
print("Mishka")
else:
print("Friendship is magic!^^") | 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
mi=0
ch=0
for i in range(int(input())):
a=list(map(int,input().split()))
if a[0]>a[1]:
mi+=1
elif a[0]<a[1]:
ch+=1
else:
continue
if mi<ch:
print("Chris")
elif mi>ch:
print("Mishka")
else:
print("Friendship is magic!^^")
``` | 3 | 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... | 1,607,312,098 | 2,147,483,647 | Python 3 | COMPILATION_ERROR | TESTS | 0 | 0 | 0 | int main()
{
int t;
cin >> t;
for(int i = 0;i < t;++i)
{
int n;
cin >> n;
int64_t a[n],mina = 100000000000;
int64_t b[n],minb = 100000000000;
for(int i = 0;i < n;++i)
{
cin >> a[i];
mina = min(mina,a[i]);
}
... | 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
int main()
{
int t;
cin >> t;
for(int i = 0;i < t;++i)
{
int n;
cin >> n;
int64_t a[n],mina = 100000000000;
int64_t b[n],minb = 100000000000;
for(int i = 0;i < n;++i)
{
cin >> a[i];
mina = min(mina,a[i]);
... | -1 | 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"
},
{
"... | 1,571,158,207 | 2,147,483,647 | PyPy 3 | TIME_LIMIT_EXCEEDED | TESTS | 0 | 2,000 | 162,816,000 | n = int(input())
a = list(map(int, input().split()))
m = int(input())
count = [0]*(10**7 + 1)
for elem in a:
count[elem]+=1
p = [True]*(10**7+1)
f = [0]*(10**7 + 1)
for i in range(2, 10**7+1):
if p[i]:
if i**2 <= 10**7:
j = i*i
while j <=10**7:
p[j] =... | 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
n = int(input())
a = list(map(int, input().split()))
m = int(input())
count = [0]*(10**7 + 1)
for elem in a:
count[elem]+=1
p = [True]*(10**7+1)
f = [0]*(10**7 + 1)
for i in range(2, 10**7+1):
if p[i]:
if i**2 <= 10**7:
j = i*i
while j <=10**7:
... | 0 | MatrixStudio/Codeforces-Python-Submissions | |
368 | B | Sereja and Suffixes | PROGRAMMING | 1,100 | [
"data structures",
"dp"
] | null | null | Sereja has an array *a*, consisting of *n* integers *a*1, *a*2, ..., *a**n*. The boy cannot sit and do nothing, he decided to study an array. Sereja took a piece of paper and wrote out *m* integers *l*1,<=*l*2,<=...,<=*l**m* (1<=≤<=*l**i*<=≤<=*n*). For each number *l**i* he wants to know how many distinct numbers are s... | The first line contains two integers *n* and *m* (1<=≤<=*n*,<=*m*<=≤<=105). The second line contains *n* integers *a*1, *a*2, ..., *a**n* (1<=≤<=*a**i*<=≤<=105) — the array elements.
Next *m* lines contain integers *l*1,<=*l*2,<=...,<=*l**m*. The *i*-th line contains integer *l**i* (1<=≤<=*l**i*<=≤<=*n*). | Print *m* lines — on the *i*-th line print the answer to the number *l**i*. | [
"10 10\n1 2 3 4 1 2 3 4 100000 99999\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n"
] | [
"6\n6\n6\n6\n6\n5\n4\n3\n2\n1\n"
] | none | 1,000 | [
{
"input": "10 10\n1 2 3 4 1 2 3 4 100000 99999\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10",
"output": "6\n6\n6\n6\n6\n5\n4\n3\n2\n1"
},
{
"input": "8 3\n8 6 4 3 4 2 4 8\n6\n4\n2",
"output": "3\n4\n5"
},
{
"input": "7 10\n1 3 8 6 2 2 7\n4\n2\n6\n3\n4\n4\n6\n2\n7\n4",
"output": "3\n5\n2\n4\n3\n3\... | 1,697,023,182 | 2,147,483,647 | Python 3 | WRONG_ANSWER | TESTS | 8 | 31 | 0 | n, m = map(int, input().split())
a = [int(x) for x in input().split()]
dp = [1] * n
already = set()
for i in range(1, n):
if a[n-1-i] in already: dp[n-1-i] = dp[n-i]
else:
already.add(a[n-1-i])
dp[n-1-i] = dp[n-i] + 1
ans = []
for _ in range(m):
ans.append(dp[int(input())-1])
f... | Title: Sereja and Suffixes
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Sereja has an array *a*, consisting of *n* integers *a*1, *a*2, ..., *a**n*. The boy cannot sit and do nothing, he decided to study an array. Sereja took a piece of paper and wrote out *m* integers *l*1,<=*l*2,<=...... | ```python
n, m = map(int, input().split())
a = [int(x) for x in input().split()]
dp = [1] * n
already = set()
for i in range(1, n):
if a[n-1-i] in already: dp[n-1-i] = dp[n-i]
else:
already.add(a[n-1-i])
dp[n-1-i] = dp[n-i] + 1
ans = []
for _ in range(m):
ans.append(dp[int(input... | 0 | MatrixStudio/Codeforces-Python-Submissions | |
469 | A | I Wanna Be the Guy | PROGRAMMING | 800 | [
"greedy",
"implementation"
] | null | null | There is a game called "I Wanna Be the Guy", consisting of *n* levels. Little X and his friend Little Y are addicted to the game. Each of them wants to pass the whole game.
Little X can pass only *p* levels of the game. And Little Y can pass only *q* levels of the game. You are given the indices of levels Little X can... | The first line contains a single integer *n* (1<=≤<=<=*n*<=≤<=100).
The next line contains an integer *p* (0<=≤<=*p*<=≤<=*n*) at first, then follows *p* distinct integers *a*1,<=*a*2,<=...,<=*a**p* (1<=≤<=*a**i*<=≤<=*n*). These integers denote the indices of levels Little X can pass. The next line contains the levels... | If they can pass all the levels, print "I become the guy.". If it's impossible, print "Oh, my keyboard!" (without the quotes). | [
"4\n3 1 2 3\n2 2 4\n",
"4\n3 1 2 3\n2 2 3\n"
] | [
"I become the guy.\n",
"Oh, my keyboard!\n"
] | In the first sample, Little X can pass levels [1 2 3], and Little Y can pass level [2 4], so they can pass all the levels both.
In the second sample, no one can pass level 4. | 500 | [
{
"input": "4\n3 1 2 3\n2 2 4",
"output": "I become the guy."
},
{
"input": "4\n3 1 2 3\n2 2 3",
"output": "Oh, my keyboard!"
},
{
"input": "10\n5 8 6 1 5 4\n6 1 3 2 9 4 6",
"output": "Oh, my keyboard!"
},
{
"input": "10\n8 8 10 7 3 1 4 2 6\n8 9 5 10 3 7 2 4 8",
"output":... | 1,693,329,577 | 2,147,483,647 | Python 3 | OK | TESTS | 29 | 46 | 0 | n=int(input())
p=list(map(int,input().split()))
s=list(map(int,input().split()))
p.pop(0)
s.pop(0)
m=[]
for i in range(1,n+1):
m.append(i)
sum=0
for j in m:
if j in p+s:
sum+=1
if sum==len(m):
print("I become the guy.")
else:
print("Oh, my keyboard!")
| Title: I Wanna Be the Guy
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
There is a game called "I Wanna Be the Guy", consisting of *n* levels. Little X and his friend Little Y are addicted to the game. Each of them wants to pass the whole game.
Little X can pass only *p* levels of the g... | ```python
n=int(input())
p=list(map(int,input().split()))
s=list(map(int,input().split()))
p.pop(0)
s.pop(0)
m=[]
for i in range(1,n+1):
m.append(i)
sum=0
for j in m:
if j in p+s:
sum+=1
if sum==len(m):
print("I become the guy.")
else:
print("Oh, my keyboard!")
... | 3 | MatrixStudio/Codeforces-Python-Submissions | |
911 | B | Two Cakes | PROGRAMMING | 1,200 | [
"binary search",
"brute force",
"implementation"
] | null | null | It's New Year's Eve soon, so Ivan decided it's high time he started setting the table. Ivan has bought two cakes and cut them into pieces: the first cake has been cut into *a* pieces, and the second one — into *b* pieces.
Ivan knows that there will be *n* people at the celebration (including himself), so Ivan has set ... | The first line contains three integers *n*, *a* and *b* (1<=≤<=*a*,<=*b*<=≤<=100, 2<=≤<=*n*<=≤<=*a*<=+<=*b*) — the number of plates, the number of pieces of the first cake, and the number of pieces of the second cake, respectively. | Print the maximum possible number *x* such that Ivan can distribute the cake in such a way that each plate will contain at least *x* pieces of cake. | [
"5 2 3\n",
"4 7 10\n"
] | [
"1\n",
"3\n"
] | In the first example there is only one way to distribute cakes to plates, all of them will have 1 cake on it.
In the second example you can have two plates with 3 and 4 pieces of the first cake and two plates both with 5 pieces of the second cake. Minimal number of pieces is 3. | 0 | [
{
"input": "5 2 3",
"output": "1"
},
{
"input": "4 7 10",
"output": "3"
},
{
"input": "100 100 100",
"output": "2"
},
{
"input": "10 100 3",
"output": "3"
},
{
"input": "2 9 29",
"output": "9"
},
{
"input": "4 6 10",
"output": "3"
},
{
"inp... | 1,638,715,928 | 2,147,483,647 | PyPy 3-64 | WRONG_ANSWER | TESTS | 3 | 108 | 0 | a,b,c=map(int,input().split())
if a!=b+c:
print(b//a+c//a)
else:
print(1) | Title: Two Cakes
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
It's New Year's Eve soon, so Ivan decided it's high time he started setting the table. Ivan has bought two cakes and cut them into pieces: the first cake has been cut into *a* pieces, and the second one — into *b* pieces.
Iv... | ```python
a,b,c=map(int,input().split())
if a!=b+c:
print(b//a+c//a)
else:
print(1)
``` | 0 | MatrixStudio/Codeforces-Python-Submissions | |
884 | B | Japanese Crosswords Strike Back | PROGRAMMING | 1,100 | [
"implementation"
] | null | null | A one-dimensional Japanese crossword can be represented as a binary string of length *x*. An encoding of this crossword is an array *a* of size *n*, where *n* is the number of segments formed completely of 1's, and *a**i* is the length of *i*-th segment. No two segments touch or intersect.
For example:
- If *x*<==<... | The first line contains two integer numbers *n* and *x* (1<=≤<=*n*<=≤<=100000, 1<=≤<=*x*<=≤<=109) — the number of elements in the encoding and the length of the crossword Mishka picked.
The second line contains *n* integer numbers *a*1, *a*2, ..., *a**n* (1<=≤<=*a**i*<=≤<=10000) — the encoding. | Print YES if there exists exaclty one crossword with chosen length and encoding. Otherwise, print NO. | [
"2 4\n1 3\n",
"3 10\n3 3 2\n",
"2 10\n1 3\n"
] | [
"NO\n",
"YES\n",
"NO\n"
] | none | 0 | [
{
"input": "2 4\n1 3",
"output": "NO"
},
{
"input": "3 10\n3 3 2",
"output": "YES"
},
{
"input": "2 10\n1 3",
"output": "NO"
},
{
"input": "1 1\n1",
"output": "YES"
},
{
"input": "1 10\n10",
"output": "YES"
},
{
"input": "1 10000\n10000",
"output":... | 1,588,160,552 | 2,147,483,647 | Python 3 | OK | TESTS | 66 | 140 | 7,270,400 |
n, x = map(int, input().split())
l = list(map(int, input().split()))
if sum(l) + n - 1 == x:
print('YES')
else:
print('NO') | Title: Japanese Crosswords Strike Back
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
A one-dimensional Japanese crossword can be represented as a binary string of length *x*. An encoding of this crossword is an array *a* of size *n*, where *n* is the number of segments formed completely ... | ```python
n, x = map(int, input().split())
l = list(map(int, input().split()))
if sum(l) + n - 1 == x:
print('YES')
else:
print('NO')
``` | 3 | MatrixStudio/Codeforces-Python-Submissions | |
448 | A | Rewards | PROGRAMMING | 800 | [
"implementation"
] | null | null | Bizon the Champion is called the Champion for a reason.
Bizon the Champion has recently got a present — a new glass cupboard with *n* shelves and he decided to put all his presents there. All the presents can be divided into two types: medals and cups. Bizon the Champion has *a*1 first prize cups, *a*2 second prize c... | The first line contains integers *a*1, *a*2 and *a*3 (0<=≤<=*a*1,<=*a*2,<=*a*3<=≤<=100). The second line contains integers *b*1, *b*2 and *b*3 (0<=≤<=*b*1,<=*b*2,<=*b*3<=≤<=100). The third line contains integer *n* (1<=≤<=*n*<=≤<=100).
The numbers in the lines are separated by single spaces. | Print "YES" (without the quotes) if all the rewards can be put on the shelves in the described manner. Otherwise, print "NO" (without the quotes). | [
"1 1 1\n1 1 1\n4\n",
"1 1 3\n2 3 4\n2\n",
"1 0 0\n1 0 0\n1\n"
] | [
"YES\n",
"YES\n",
"NO\n"
] | none | 500 | [
{
"input": "1 1 1\n1 1 1\n4",
"output": "YES"
},
{
"input": "1 1 3\n2 3 4\n2",
"output": "YES"
},
{
"input": "1 0 0\n1 0 0\n1",
"output": "NO"
},
{
"input": "0 0 0\n0 0 0\n1",
"output": "YES"
},
{
"input": "100 100 100\n100 100 100\n100",
"output": "YES"
},
... | 1,659,360,758 | 2,147,483,647 | Python 3 | OK | TESTS | 25 | 46 | 0 | import math
a = list(map(int,input().split(" ")))
b = list(map(int,input().split(" ")))
sa = sum(a)
sb = sum(b)
n = int(input())
print(("NO","YES")[math.ceil(sa/5)+math.ceil(sb/10)<=n])
| Title: Rewards
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
Bizon the Champion is called the Champion for a reason.
Bizon the Champion has recently got a present — a new glass cupboard with *n* shelves and he decided to put all his presents there. All the presents can be divided into ... | ```python
import math
a = list(map(int,input().split(" ")))
b = list(map(int,input().split(" ")))
sa = sum(a)
sb = sum(b)
n = int(input())
print(("NO","YES")[math.ceil(sa/5)+math.ceil(sb/10)<=n])
``` | 3 | MatrixStudio/Codeforces-Python-Submissions | |
520 | A | Pangram | PROGRAMMING | 800 | [
"implementation",
"strings"
] | null | null | A word or a sentence in some language is called a pangram if all the characters of the alphabet of this language appear in it at least once. Pangrams are often used to demonstrate fonts in printing or test the output devices.
You are given a string consisting of lowercase and uppercase Latin letters. Check whether thi... | The first line contains a single integer *n* (1<=≤<=*n*<=≤<=100) — the number of characters in the string.
The second line contains the string. The string consists only of uppercase and lowercase Latin letters. | Output "YES", if the string is a pangram and "NO" otherwise. | [
"12\ntoosmallword\n",
"35\nTheQuickBrownFoxJumpsOverTheLazyDog\n"
] | [
"NO\n",
"YES\n"
] | none | 500 | [
{
"input": "12\ntoosmallword",
"output": "NO"
},
{
"input": "35\nTheQuickBrownFoxJumpsOverTheLazyDog",
"output": "YES"
},
{
"input": "1\na",
"output": "NO"
},
{
"input": "26\nqwertyuiopasdfghjklzxcvbnm",
"output": "YES"
},
{
"input": "26\nABCDEFGHIJKLMNOPQRSTUVWXY... | 1,693,335,539 | 2,147,483,647 | Python 3 | OK | TESTS | 59 | 46 | 921,600 | import string
len = int(input())
str = input()
str = str.lower()
alphabet = list(string.ascii_lowercase)
count = 0
# print(alphabet)
for i in str:
# print(i)
if i in alphabet:
alphabet.remove(i)
# print(alphabet)
# print(alphabet)
if alphabet == []:
print('YES')
else:
pri... | Title: Pangram
Time Limit: None seconds
Memory Limit: None megabytes
Problem Description:
A word or a sentence in some language is called a pangram if all the characters of the alphabet of this language appear in it at least once. Pangrams are often used to demonstrate fonts in printing or test the output devices.
... | ```python
import string
len = int(input())
str = input()
str = str.lower()
alphabet = list(string.ascii_lowercase)
count = 0
# print(alphabet)
for i in str:
# print(i)
if i in alphabet:
alphabet.remove(i)
# print(alphabet)
# print(alphabet)
if alphabet == []:
print('YES')
else... | 3 | MatrixStudio/Codeforces-Python-Submissions |
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