message stringlengths 2 59.7k | message_type stringclasses 2
values | message_id int64 0 1 | conversation_id int64 37 108k | cluster float64 20 20 | __index_level_0__ int64 74 217k |
|---|---|---|---|---|---|
Provide tags and a correct Python 3 solution for this coding contest problem.
Little Paul wants to learn how to play piano. He already has a melody he wants to start with. For simplicity he represented this melody as a sequence a_1, a_2, …, a_n of key numbers: the more a number is, the closer it is to the right end of... | instruction | 0 | 46,180 | 20 | 92,360 |
Tags: constructive algorithms, dp
Correct Solution:
```
#Code by Sounak, IIESTS
#------------------------------warmup----------------------------
import os
import sys
import math
from io import BytesIO, IOBase
from fractions import Fraction
import collections
from itertools import permutations
from collections import ... | output | 1 | 46,180 | 20 | 92,361 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Little Paul wants to learn how to play piano. He already has a melody he wants to start with. For simplicity he represented this melody as a sequence a_1, a_2, …, a_n of key numbers: the more a number is, the closer it is to the right end of... | instruction | 0 | 46,181 | 20 | 92,362 |
Tags: constructive algorithms, dp
Correct Solution:
```
n=int(input())
arr=list(map(int,input().split()))
dp=[[-1 for i in range(5+1)] for j in range(n)]
for i in range(1,6):
dp[0][i] =1
for i in range(1,n):
if arr[i] > arr[i - 1]:
for j in range(1,6):
for k in range(1,j):
if... | output | 1 | 46,181 | 20 | 92,363 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Little Paul wants to learn how to play piano. He already has a melody he wants to start with. For simplicity he represented this melody as a sequence a_1, a_2, …, a_n of key numbers: the more a number is, the closer it is to the right end of... | instruction | 0 | 46,182 | 20 | 92,364 |
Tags: constructive algorithms, dp
Correct Solution:
```
import math
from collections import Counter, defaultdict
R = lambda: map(int, input().split())
n = int(input())
arr = list(R())
if n == 1:
print(1)
exit(0)
dp = [[0] * 6 for i in range(n + 1)]
for i in range(1, n):
for j in range(1, 6):
if arr... | output | 1 | 46,182 | 20 | 92,365 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Little Paul wants to learn how to play piano. He already has a melody he wants to start with. For simplicity he represented this melody as a sequence a_1, a_2, …, a_n of key numbers: the more a number is, the closer it is to the right end of... | instruction | 0 | 46,183 | 20 | 92,366 |
Tags: constructive algorithms, dp
Correct Solution:
```
n = int(input())
arr = list(map(int, input().split()))
pal = 1 if arr[1] > arr[0] else 3 if arr[0] == arr[1] else 5
b = True
arr_pal = [pal]
for i in range(n - 2):
if arr[i + 1] > arr[i]:
if pal == 5:
b = False
break
if ... | output | 1 | 46,183 | 20 | 92,367 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Little Paul wants to learn how to play piano. He already has a melody he wants to start with. For simplicity he represented this melody as a sequence a_1, a_2, …, a_n of key numbers: the more a number is, the closer it is to the right end of... | instruction | 0 | 46,184 | 20 | 92,368 |
Tags: constructive algorithms, dp
Correct Solution:
```
n = int(input())
ar = [int(i) for i in input().split()]
if n == 1:
print(1)
exit()
if ar[1] > ar[0]:
li = [1]
elif ar[1] < ar[0]:
li = [5]
else:
li = [3]
c = 1
while c != n:
j = 0
if ar[c] > ar[c - 1]:
while c != n and ar[c]... | output | 1 | 46,184 | 20 | 92,369 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Little Paul wants to learn how to play piano. He already has a melody he wants to start with. For simplicity he represented this melody as a sequence a_1, a_2, …, a_n of key numbers: the more a number is, the closer it is to the right end of... | instruction | 0 | 46,185 | 20 | 92,370 |
Tags: constructive algorithms, dp
Correct Solution:
```
from collections import deque
n=int(input())
l=list(map(int,input().split()))
dp=[[-1 for j in range(5)] for i in range(n)]
dp[0][0]=1
dp[0][1]=1
dp[0][2]=1
dp[0][3]=1
dp[0][4]=1
f=0
for i in range(1,n):
for j in range(5):
for k in range(5):
... | output | 1 | 46,185 | 20 | 92,371 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Little Paul wants to learn how to play piano. He already has a melody he wants to start with. For simplicity he represented this melody as a sequence a_1, a_2, …, a_n of key numbers: the more a number is, the closer it is to the right end of... | instruction | 0 | 46,186 | 20 | 92,372 |
Tags: constructive algorithms, dp
Correct Solution:
```
n = int(input())
arr = list(map(int, input().split()))
dp = [[0] * 5 for i in range(n)]
dp[0] = [1, 1, 1, 1, 1]
for i in range(1, n):
if arr[i] > arr[i - 1]:
for j in range(1, 5):
dp[i][j] = max(dp[i][j - 1], dp[i - 1][j - 1])
elif arr... | output | 1 | 46,186 | 20 | 92,373 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Little Paul wants to learn how to play piano. He already has a melody he wants to start with. For simplicity he represented this melody as a sequence a_1, a_2, …, a_n of key numbers: the more a number is, the closer it is to the right end of... | instruction | 0 | 46,187 | 20 | 92,374 |
Tags: constructive algorithms, dp
Correct Solution:
```
n = int(input())
a = list(map(int,input().split()))
dp = [[0,1,2,3,4] for i in range(n+1)]
for i in range(2,n+1):
if a[i-1]==a[i-2]:
flag = -1
for k in range(5):
for j in range(5):
if dp[i-1][j]!=-1 and j!=k:
flag = j
break
if flag==-1:
... | output | 1 | 46,187 | 20 | 92,375 |
Provide tags and a correct Python 2 solution for this coding contest problem.
Little Paul wants to learn how to play piano. He already has a melody he wants to start with. For simplicity he represented this melody as a sequence a_1, a_2, …, a_n of key numbers: the more a number is, the closer it is to the right end of... | instruction | 0 | 46,188 | 20 | 92,376 |
Tags: constructive algorithms, dp
Correct Solution:
```
from sys import stdin, stdout
from collections import Counter, defaultdict
from itertools import permutations, combinations
raw_input = stdin.readline
pr = stdout.write
def in_arr():
return map(int,raw_input().split())
def pr_num(n):
stdout.write(str(n... | output | 1 | 46,188 | 20 | 92,377 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Little Paul wants to learn how to play piano. He already has a melody he wants to start with. For simplicity he represented this melody as a sequence a_1, a_2, …, a_n of key numbers: the more a ... | instruction | 0 | 46,189 | 20 | 92,378 |
Yes | output | 1 | 46,189 | 20 | 92,379 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Little Paul wants to learn how to play piano. He already has a melody he wants to start with. For simplicity he represented this melody as a sequence a_1, a_2, …, a_n of key numbers: the more a ... | instruction | 0 | 46,190 | 20 | 92,380 |
Yes | output | 1 | 46,190 | 20 | 92,381 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Little Paul wants to learn how to play piano. He already has a melody he wants to start with. For simplicity he represented this melody as a sequence a_1, a_2, …, a_n of key numbers: the more a ... | instruction | 0 | 46,191 | 20 | 92,382 |
Yes | output | 1 | 46,191 | 20 | 92,383 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Little Paul wants to learn how to play piano. He already has a melody he wants to start with. For simplicity he represented this melody as a sequence a_1, a_2, …, a_n of key numbers: the more a ... | instruction | 0 | 46,192 | 20 | 92,384 |
Yes | output | 1 | 46,192 | 20 | 92,385 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Little Paul wants to learn how to play piano. He already has a melody he wants to start with. For simplicity he represented this melody as a sequence a_1, a_2, …, a_n of key numbers: the more a ... | instruction | 0 | 46,193 | 20 | 92,386 |
No | output | 1 | 46,193 | 20 | 92,387 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Little Paul wants to learn how to play piano. He already has a melody he wants to start with. For simplicity he represented this melody as a sequence a_1, a_2, …, a_n of key numbers: the more a ... | instruction | 0 | 46,194 | 20 | 92,388 |
No | output | 1 | 46,194 | 20 | 92,389 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Little Paul wants to learn how to play piano. He already has a melody he wants to start with. For simplicity he represented this melody as a sequence a_1, a_2, …, a_n of key numbers: the more a ... | instruction | 0 | 46,195 | 20 | 92,390 |
No | output | 1 | 46,195 | 20 | 92,391 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Little Paul wants to learn how to play piano. He already has a melody he wants to start with. For simplicity he represented this melody as a sequence a_1, a_2, …, a_n of key numbers: the more a ... | instruction | 0 | 46,196 | 20 | 92,392 |
No | output | 1 | 46,196 | 20 | 92,393 |
Evaluate the correctness of the submitted Python 2 solution to the coding contest problem. Provide a "Yes" or "No" response.
Little Paul wants to learn how to play piano. He already has a melody he wants to start with. For simplicity he represented this melody as a sequence a_1, a_2, …, a_n of key numbers: the more a ... | instruction | 0 | 46,197 | 20 | 92,394 |
No | output | 1 | 46,197 | 20 | 92,395 |
Evaluate the correctness of the submitted Python 2 solution to the coding contest problem. Provide a "Yes" or "No" response.
Little Paul wants to learn how to play piano. He already has a melody he wants to start with. For simplicity he represented this melody as a sequence a_1, a_2, …, a_n of key numbers: the more a ... | instruction | 0 | 46,198 | 20 | 92,396 |
No | output | 1 | 46,198 | 20 | 92,397 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Vasya will fancy any number as long as it is an integer power of two. Petya, on the other hand, is very conservative and only likes a single integer p (which may be positive, negative, or zero). To combine their tastes, they invented p-binar... | instruction | 0 | 46,334 | 20 | 92,668 |
Tags: bitmasks, brute force, math
Correct Solution:
```
n, p = map(int, input().split())
for i in range(1, 1000):
x = n - i * p
b = bin(x)
if x <= 0: break
if b.count('1') <= i <= x:
print(i)
exit()
print(-1)
``` | output | 1 | 46,334 | 20 | 92,669 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Vasya will fancy any number as long as it is an integer power of two. Petya, on the other hand, is very conservative and only likes a single integer p (which may be positive, negative, or zero). To combine their tastes, they invented p-binar... | instruction | 0 | 46,335 | 20 | 92,670 |
Tags: bitmasks, brute force, math
Correct Solution:
```
n,p = map(int,input().split())
if n <= p:
print(-1)
exit()
for ans in range(1,10**6):
x = n-p*ans
if x >= ans and bin(x).count("1") <= ans:
print(ans)
break
else:
print(-1)
``` | output | 1 | 46,335 | 20 | 92,671 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Vasya will fancy any number as long as it is an integer power of two. Petya, on the other hand, is very conservative and only likes a single integer p (which may be positive, negative, or zero). To combine their tastes, they invented p-binar... | instruction | 0 | 46,336 | 20 | 92,672 |
Tags: bitmasks, brute force, math
Correct Solution:
```
def bitcount(n):
count = 0
while (n > 0):
count = count + 1
n = n & (n-1)
return count
n,p=input("").split()
n=int(n)
p=int(p)
for i in range(1,31):
m=n
m=m-(i*p)
count=bitcount(m)
if(m<=0):
print(-1)
br... | output | 1 | 46,336 | 20 | 92,673 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Vasya will fancy any number as long as it is an integer power of two. Petya, on the other hand, is very conservative and only likes a single integer p (which may be positive, negative, or zero). To combine their tastes, they invented p-binar... | instruction | 0 | 46,337 | 20 | 92,674 |
Tags: bitmasks, brute force, math
Correct Solution:
```
N, P = map(int, input().split())
def chk(k):
x = N - k*P
if x > 0 and sum(map(int, bin(x)[2:])) <= k <= x:
return 1
return 0
for i in range(1, 100):
if chk(i):
print(i)
break
else:
print(-1)
``` | output | 1 | 46,337 | 20 | 92,675 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Vasya will fancy any number as long as it is an integer power of two. Petya, on the other hand, is very conservative and only likes a single integer p (which may be positive, negative, or zero). To combine their tastes, they invented p-binar... | instruction | 0 | 46,338 | 20 | 92,676 |
Tags: bitmasks, brute force, math
Correct Solution:
```
n,p =map(int, input().split())
ans = -1
for i in range(40):
t = n - p*i
if t < 0:
break
cnt = 0
while t:
if t&1:
cnt += 1
t >>= 1
if n-p*i>=i and cnt <= i:
print(i)
exit()
print(ans)
``` | output | 1 | 46,338 | 20 | 92,677 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Vasya will fancy any number as long as it is an integer power of two. Petya, on the other hand, is very conservative and only likes a single integer p (which may be positive, negative, or zero). To combine their tastes, they invented p-binar... | instruction | 0 | 46,339 | 20 | 92,678 |
Tags: bitmasks, brute force, math
Correct Solution:
```
n, p = map(int, input().split())
def count(s):
c = 0
b = list(bin(s))
b.pop(0)
b.pop(0)
for i in b:
if i == '1':
c += 1
return c
i = 1
if p > 0:
l = n/(p+1)
while i <= l:
if count(n - i*p) <= i:
... | output | 1 | 46,339 | 20 | 92,679 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Vasya will fancy any number as long as it is an integer power of two. Petya, on the other hand, is very conservative and only likes a single integer p (which may be positive, negative, or zero). To combine their tastes, they invented p-binar... | instruction | 0 | 46,340 | 20 | 92,680 |
Tags: bitmasks, brute force, math
Correct Solution:
```
a,b=map(int,input().split())
def bn(x):
m=0
while x>0:
m+=x%2
x//=2
return m
mn=100000000
idx=0
if b==0:
print(bn(a))
exit(0)
else:
for n in range(1,100):
j=n*b
... | output | 1 | 46,340 | 20 | 92,681 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Vasya will fancy any number as long as it is an integer power of two. Petya, on the other hand, is very conservative and only likes a single integer p (which may be positive, negative, or zero). To combine their tastes, they invented p-binar... | instruction | 0 | 46,341 | 20 | 92,682 |
Tags: bitmasks, brute force, math
Correct Solution:
```
n,p=map(int,input().split())
#print("{0:b}".format(n).count('1'))
t=0
while (("{0:b}".format(n).count('1'))>t or n<t) and n>=0:
t+=1
n-=p
if n<0:
print(-1)
else:
print(t)
``` | output | 1 | 46,341 | 20 | 92,683 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya will fancy any number as long as it is an integer power of two. Petya, on the other hand, is very conservative and only likes a single integer p (which may be positive, negative, or zero).... | instruction | 0 | 46,342 | 20 | 92,684 |
Yes | output | 1 | 46,342 | 20 | 92,685 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya will fancy any number as long as it is an integer power of two. Petya, on the other hand, is very conservative and only likes a single integer p (which may be positive, negative, or zero).... | instruction | 0 | 46,343 | 20 | 92,686 |
Yes | output | 1 | 46,343 | 20 | 92,687 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya will fancy any number as long as it is an integer power of two. Petya, on the other hand, is very conservative and only likes a single integer p (which may be positive, negative, or zero).... | instruction | 0 | 46,344 | 20 | 92,688 |
Yes | output | 1 | 46,344 | 20 | 92,689 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya will fancy any number as long as it is an integer power of two. Petya, on the other hand, is very conservative and only likes a single integer p (which may be positive, negative, or zero).... | instruction | 0 | 46,345 | 20 | 92,690 |
Yes | output | 1 | 46,345 | 20 | 92,691 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya will fancy any number as long as it is an integer power of two. Petya, on the other hand, is very conservative and only likes a single integer p (which may be positive, negative, or zero).... | instruction | 0 | 46,346 | 20 | 92,692 |
No | output | 1 | 46,346 | 20 | 92,693 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya will fancy any number as long as it is an integer power of two. Petya, on the other hand, is very conservative and only likes a single integer p (which may be positive, negative, or zero).... | instruction | 0 | 46,347 | 20 | 92,694 |
No | output | 1 | 46,347 | 20 | 92,695 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya will fancy any number as long as it is an integer power of two. Petya, on the other hand, is very conservative and only likes a single integer p (which may be positive, negative, or zero).... | instruction | 0 | 46,348 | 20 | 92,696 |
No | output | 1 | 46,348 | 20 | 92,697 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya will fancy any number as long as it is an integer power of two. Petya, on the other hand, is very conservative and only likes a single integer p (which may be positive, negative, or zero).... | instruction | 0 | 46,349 | 20 | 92,698 |
No | output | 1 | 46,349 | 20 | 92,699 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Petya loves lucky numbers very much. Everybody knows that lucky numbers are positive integers whose decimal record contains only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not.
Petya has two strin... | instruction | 0 | 46,480 | 20 | 92,960 |
Tags: greedy, implementation
Correct Solution:
```
a = [int(i) for i in list(input())]
b = [int(i) for i in list(input())]
c = zip(a, b)
indices = [i for i, v in enumerate(c) if v[0] != v[1]]
cnt4 = sum([a[i]==4 for i in indices])
cnt7 = len(indices) - cnt4
print(max([cnt4, cnt7]))
``` | output | 1 | 46,480 | 20 | 92,961 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Petya loves lucky numbers very much. Everybody knows that lucky numbers are positive integers whose decimal record contains only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not.
Petya has two strin... | instruction | 0 | 46,481 | 20 | 92,962 |
Tags: greedy, implementation
Correct Solution:
```
import sys
read=sys.stdin.buffer.readline
mi=lambda:map(int,read().split())
li=lambda:list(mi())
cin=lambda:int(read())
a=input()
b=input()
d={'4':0,'7':0}
for i in range(len(a)):
if a[i]!=b[i]:
d[b[i]]+=1
print(max(d['4'],d['7']))
``` | output | 1 | 46,481 | 20 | 92,963 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Petya loves lucky numbers very much. Everybody knows that lucky numbers are positive integers whose decimal record contains only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not.
Petya has two strin... | instruction | 0 | 46,482 | 20 | 92,964 |
Tags: greedy, implementation
Correct Solution:
```
a=str(input())
b=str(input())
a1=list(a)
b1=list(b)
k=0
for i in range(0,len(a)):
if(a1[i]!=b1[i]):
k=k+1
ka=a1.count('7')
kb=b1.count('7')
if(ka>kb):
f=(k-(ka-kb))//2
print(f+ka-kb)
else:
f=(k-(kb-ka))//2
print(f+kb-ka)
``` | output | 1 | 46,482 | 20 | 92,965 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Petya loves lucky numbers very much. Everybody knows that lucky numbers are positive integers whose decimal record contains only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not.
Petya has two strin... | instruction | 0 | 46,483 | 20 | 92,966 |
Tags: greedy, implementation
Correct Solution:
```
s = input()
t = input()
len_s = len(s)
len_t = len(t)
s4 = s.count('4')
t4 = t.count('4')
swap = abs(s4-t4)
sp = ''
st = ''
if s4 > t4:
for i in s:
if i == '7':
sp += '4'
else:
sp += '7'
for i in t:
if i == '... | output | 1 | 46,483 | 20 | 92,967 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Petya loves lucky numbers very much. Everybody knows that lucky numbers are positive integers whose decimal record contains only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not.
Petya has two strin... | instruction | 0 | 46,484 | 20 | 92,968 |
Tags: greedy, implementation
Correct Solution:
```
a = input()
b = input()
a7,a4 = a.count('7'),a.count('4')
b7,b4 = b.count('7'),b.count('4')
c = 0
for i in range(len(a)):
if a[i]!=b[i]:
c += 1
if a7==b7 and a4==b4:
if c%2:
print(c//2+1)
else:
print(c//2)
else:
if b7>a7:
... | output | 1 | 46,484 | 20 | 92,969 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Petya loves lucky numbers very much. Everybody knows that lucky numbers are positive integers whose decimal record contains only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not.
Petya has two strin... | instruction | 0 | 46,485 | 20 | 92,970 |
Tags: greedy, implementation
Correct Solution:
```
x = input("")
y = input("")
count = 0
count1 = 0
if x == y:
print(0)
else:
for i in range(len(x)):
if(x[i] == '4' and y[i] == '7'):
count+=1
elif (x[i] == '7' and y[i] == '4'):
count1+=1
m = max(count,count1)
print(m)
``` | output | 1 | 46,485 | 20 | 92,971 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Petya loves lucky numbers very much. Everybody knows that lucky numbers are positive integers whose decimal record contains only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not.
Petya has two strin... | instruction | 0 | 46,486 | 20 | 92,972 |
Tags: greedy, implementation
Correct Solution:
```
a=list(input())
t=list(input())
cnta=0
cntb=0
for i in range(len(a)):
if a[i]=='7' and t[i]=='4':
cnta+=1
if a[i]=='4' and t[i]=='7':
cntb+=1
print(max(cnta,cntb))
``` | output | 1 | 46,486 | 20 | 92,973 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Petya loves lucky numbers very much. Everybody knows that lucky numbers are positive integers whose decimal record contains only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not.
Petya has two strin... | instruction | 0 | 46,487 | 20 | 92,974 |
Tags: greedy, implementation
Correct Solution:
```
x=input()
y=input()
d=abs(x.count("4")-y.count("4"))
c=0
for i in range(len(x)):
if x[i]!=y[i]:
c+=1
c-=d
print(c//2+d)
``` | output | 1 | 46,487 | 20 | 92,975 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
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 luc... | instruction | 0 | 46,488 | 20 | 92,976 |
Yes | output | 1 | 46,488 | 20 | 92,977 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
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 luc... | instruction | 0 | 46,489 | 20 | 92,978 |
Yes | output | 1 | 46,489 | 20 | 92,979 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
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 luc... | instruction | 0 | 46,490 | 20 | 92,980 |
Yes | output | 1 | 46,490 | 20 | 92,981 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
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 luc... | instruction | 0 | 46,491 | 20 | 92,982 |
Yes | output | 1 | 46,491 | 20 | 92,983 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
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 luc... | instruction | 0 | 46,492 | 20 | 92,984 |
No | output | 1 | 46,492 | 20 | 92,985 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
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 luc... | instruction | 0 | 46,493 | 20 | 92,986 |
No | output | 1 | 46,493 | 20 | 92,987 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
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 luc... | instruction | 0 | 46,494 | 20 | 92,988 |
No | output | 1 | 46,494 | 20 | 92,989 |
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