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 |
|---|---|---|---|---|---|
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Efim just received his grade for the last test. He studies in a special school and his grade can be equal to any positive decimal fraction. First he got disappointed, as he expected a way more p... | instruction | 0 | 30,573 | 20 | 61,146 |
No | output | 1 | 30,573 | 20 | 61,147 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Efim just received his grade for the last test. He studies in a special school and his grade can be equal to any positive decimal fraction. First he got disappointed, as he expected a way more p... | instruction | 0 | 30,574 | 20 | 61,148 |
No | output | 1 | 30,574 | 20 | 61,149 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Efim just received his grade for the last test. He studies in a special school and his grade can be equal to any positive decimal fraction. First he got disappointed, as he expected a way more p... | instruction | 0 | 30,575 | 20 | 61,150 |
No | output | 1 | 30,575 | 20 | 61,151 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Efim just received his grade for the last test. He studies in a special school and his grade can be equal to any positive decimal fraction. First he got disappointed, as he expected a way more p... | instruction | 0 | 30,576 | 20 | 61,152 |
No | output | 1 | 30,576 | 20 | 61,153 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Petya loves lucky numbers. We all know that lucky numbers are the positive integers whose decimal representations contain only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not.
Petya wonders eagerly... | instruction | 0 | 31,009 | 20 | 62,018 |
Tags: brute force, implementation
Correct Solution:
```
k=int(input())
x=[k%4, max(-0.1,k-7)%4, max(-0.1,k-14)%4, max(-0.1,k-21)%4]
if x.count(0)==0: print("-1")
else:
y=7*x.index(0)
seven=x.index(0)
z=(k-y)//4
if z>=7:
seven+=z//7*4
z=z%7
print('4'*z+'7'*seven)
``` | output | 1 | 31,009 | 20 | 62,019 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Petya loves lucky numbers. We all know that lucky numbers are the positive integers whose decimal representations contain only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not.
Petya wonders eagerly... | instruction | 0 | 31,010 | 20 | 62,020 |
Tags: brute force, implementation
Correct Solution:
```
n = int(input())
count_num = 0
if n % 7 == 0:
print(int(n/7)*'7')
while n >=4 and n % 7 != 0:
n -= 4
count_num += 1
if n % 7 == 0 :
print(count_num*'4'+int(n/7)*'7')
if n % 7 != 0:
print('-1')
``` | output | 1 | 31,010 | 20 | 62,021 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Petya loves lucky numbers. We all know that lucky numbers are the positive integers whose decimal representations contain only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not.
Petya wonders eagerly... | instruction | 0 | 31,011 | 20 | 62,022 |
Tags: brute force, implementation
Correct Solution:
```
from sys import *
input = lambda:stdin.readline()
int_arr = lambda : list(map(int,stdin.readline().strip().split()))
str_arr = lambda :list(map(str,stdin.readline().split()))
get_str = lambda : map(str,stdin.readline().strip().split())
get_int = lambda: map(int,s... | output | 1 | 31,011 | 20 | 62,023 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Petya loves lucky numbers. We all know that lucky numbers are the positive integers whose decimal representations contain only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not.
Petya wonders eagerly... | instruction | 0 | 31,012 | 20 | 62,024 |
Tags: brute force, implementation
Correct Solution:
```
import sys
from random import choice,randint
inp=sys.stdin.readline
out=sys.stdout.write
flsh=sys.stdout.flush
sys.setrecursionlimit(10**9)
inf = 10**20
eps = 1.0 / 10**10
mod = 10**9+7
dd = [(-1,0),(0,1),(1,0),(0,-1)]
ddn = [(-1,0),(-1,1),(0,1),(1,1),(1,0),(1,-... | output | 1 | 31,012 | 20 | 62,025 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Petya loves lucky numbers. We all know that lucky numbers are the positive integers whose decimal representations contain only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not.
Petya wonders eagerly... | instruction | 0 | 31,013 | 20 | 62,026 |
Tags: brute force, implementation
Correct Solution:
```
n = int(input())
C = 10 ** 9 + 7
memo = {0: (0, 0)}
for i in range(1, n + 1):
if i - 4 not in memo:
memo[i - 4] = (C, C)
if i - 7 not in memo:
memo[i - 7] = (C, C)
x1, y1 = memo[i - 4]
x1, y1 = memo[i - 4] if x1 == y1 == C else (x... | output | 1 | 31,013 | 20 | 62,027 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Petya loves lucky numbers. We all know that lucky numbers are the positive integers whose decimal representations contain only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not.
Petya wonders eagerly... | instruction | 0 | 31,014 | 20 | 62,028 |
Tags: brute force, implementation
Correct Solution:
```
n=int(input())
# n=4*a + 7*b 4......(a times) 7......(b times) mc is minimum value of a+b
b, a, mc=0, 0, [99999999999,0,0]
s= a*4 + b*7
d=99999999999
while s<=n:
b=(n-a*4)//7
s= a*4 + b*7
d=min(a+b,mc[0])
#print('wtf is going on,',a,b,d,s,mc)
if d!=... | output | 1 | 31,014 | 20 | 62,029 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Petya loves lucky numbers. We all know that lucky numbers are the positive integers whose decimal representations contain only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not.
Petya wonders eagerly... | instruction | 0 | 31,015 | 20 | 62,030 |
Tags: brute force, implementation
Correct Solution:
```
count = 0
n = int(input())
while n >= 4 and n % 7 != 0:
n -= 4
count += 1
print("-1" if 0 < n < 4 else '4' * count + '7' * (n // 7))
``` | output | 1 | 31,015 | 20 | 62,031 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Petya loves lucky numbers. We all know that lucky numbers are the positive integers whose decimal representations contain only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not.
Petya wonders eagerly... | instruction | 0 | 31,016 | 20 | 62,032 |
Tags: brute force, implementation
Correct Solution:
```
s=int(input())
x=0
ans=-1
#flag=True
while(True):
if s<0:
break
if s%7==0:
c=s//7
# if flag:
print('4'*x+'7'*c)
exit()
# flag=False
# else:
# ans=min(ans,int('4'*x+'7'*c))
s-=4
x+=1
print(ans)
``` | output | 1 | 31,016 | 20 | 62,033 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Petya loves lucky numbers. We all know that lucky numbers are the positive integers whose decimal representations contain only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky... | instruction | 0 | 31,017 | 20 | 62,034 |
Yes | output | 1 | 31,017 | 20 | 62,035 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Petya loves lucky numbers. We all know that lucky numbers are the positive integers whose decimal representations contain only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky... | instruction | 0 | 31,018 | 20 | 62,036 |
Yes | output | 1 | 31,018 | 20 | 62,037 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Petya loves lucky numbers. We all know that lucky numbers are the positive integers whose decimal representations contain only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky... | instruction | 0 | 31,019 | 20 | 62,038 |
Yes | output | 1 | 31,019 | 20 | 62,039 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Petya loves lucky numbers. We all know that lucky numbers are the positive integers whose decimal representations contain only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky... | instruction | 0 | 31,020 | 20 | 62,040 |
Yes | output | 1 | 31,020 | 20 | 62,041 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Petya loves lucky numbers. We all know that lucky numbers are the positive integers whose decimal representations contain only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky... | instruction | 0 | 31,021 | 20 | 62,042 |
No | output | 1 | 31,021 | 20 | 62,043 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Petya loves lucky numbers. We all know that lucky numbers are the positive integers whose decimal representations contain only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky... | instruction | 0 | 31,022 | 20 | 62,044 |
No | output | 1 | 31,022 | 20 | 62,045 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Petya loves lucky numbers. We all know that lucky numbers are the positive integers whose decimal representations contain only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky... | instruction | 0 | 31,023 | 20 | 62,046 |
No | output | 1 | 31,023 | 20 | 62,047 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Petya loves lucky numbers. We all know that lucky numbers are the positive integers whose decimal representations contain only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky... | instruction | 0 | 31,024 | 20 | 62,048 |
No | output | 1 | 31,024 | 20 | 62,049 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You have a blackboard and initially only an odd number x is written on it. Your goal is to write the number 1 on the blackboard.
You may write new numbers on the blackboard with the following two operations.
* You may take two numbers (... | instruction | 0 | 31,187 | 20 | 62,374 |
Tags: bitmasks, constructive algorithms, math, matrices, number theory
Correct Solution:
```
def pr(ans):
print(len(ans))
for i in ans:
if i[0] == 1:
print(i[1], "+", i[2])
else:
print(i[1], "^", i[2])
def fi2(st):
return pow(2,st - 1)
def colv(num, fi, mod):
retu... | output | 1 | 31,187 | 20 | 62,375 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You have a blackboard and initially only an odd number x is written on it. Your goal is to write the number 1 on the blackboard.
You may write new numbers on the blackboard with the following two operations.
* You may take two numbers (... | instruction | 0 | 31,188 | 20 | 62,376 |
Tags: bitmasks, constructive algorithms, math, matrices, number theory
Correct Solution:
```
#!/usr/bin/env python
import os
import sys
from io import BytesIO, IOBase
def main():
print("500")
cnt = 500
x = int(input())
if x % 4 == 3:
print(str(x) + " + " + str(x))
print(str(2 * x) + " ... | output | 1 | 31,188 | 20 | 62,377 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You have a blackboard and initially only an odd number x is written on it. Your goal is to write the number 1 on the blackboard.
You may write new numbers on the blackboard with the following two operations.
* You may take two numbers (... | instruction | 0 | 31,190 | 20 | 62,380 |
Tags: bitmasks, constructive algorithms, math, matrices, number theory
Correct Solution:
```
import math
x = int(input())
ops = []
def ext_euc(a, b) :
s = 0
old_s = 1
t = 1
old_t = 0
while a != 0 :
q = b//a
r = b%a
m, n = old_s-s*q, old_t-t*q
b,a,old_s,old_t,s,t = a... | output | 1 | 31,190 | 20 | 62,381 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You have a blackboard and initially only an odd number x is written on it. Your goal is to write the number 1 on the blackboard.
You may write new numbers on the blackboard with the following two operations.
* You may take two numbers (... | instruction | 0 | 31,191 | 20 | 62,382 |
Tags: bitmasks, constructive algorithms, math, matrices, number theory
Correct Solution:
```
import sys
x = int(sys.stdin.readline())
ans = []
c = 0
while x > 1:
if bin(x).count("0") == 1:
z = x
while (2 * z) + x != (2 * z) ^ x:
ans.append(str(z) + " + " + str(z))
z = z + z
... | output | 1 | 31,191 | 20 | 62,383 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You have a blackboard and initially only an odd number x is written on it. Your goal is to write the number 1 on the blackboard.
You may write new numbers on the blackboard with the following two operations.
* You may take two numbers (... | instruction | 0 | 31,192 | 20 | 62,384 |
Tags: bitmasks, constructive algorithms, math, matrices, number theory
Correct Solution:
```
x = int(input())
X = x
ans = []
t = x
st = set()
while x & t != 1:
#ans.append((t, '+', x))
#st.add(t + x)
t += x
# print(t)
ans.append((t, '+', x))
ans.append((t, '^', x))
ans.append((t + x, '+', t ^ x))
ans.append... | output | 1 | 31,192 | 20 | 62,385 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You have a blackboard and initially only an odd number x is written on it. Your goal is to write the number 1 on the blackboard.
You may write new numbers on the blackboard with the following two operations.
* You may take two numbers (... | instruction | 0 | 31,193 | 20 | 62,386 |
Tags: bitmasks, constructive algorithms, math, matrices, number theory
Correct Solution:
```
import math
x = int(input())
ops = []
def ext_euc(a, b) :
s = 0
old_s = 1
t = 1
old_t = 0
while a != 0 :
q = b//a
r = b%a
m, n = old_s-s*q, old_t-t*q
b,a,old_s,old_t,s,t = a... | output | 1 | 31,193 | 20 | 62,387 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You have a blackboard and initially only an odd number x is written on it. Your goal is to write the number 1 on the blackboard.
You may write new numbers on the blackboard with the following two operations.
* You may take two numbers (... | instruction | 0 | 31,194 | 20 | 62,388 |
Tags: bitmasks, constructive algorithms, math, matrices, number theory
Correct Solution:
```
#!/usr/bin/env python
import os
import sys
from io import BytesIO, IOBase
def main():
print("1000")
cnt = 1000
x = int(input())
if x % 4 == 3:
print(str(x) + " + " + str(x))
print(str(2 * x) + ... | output | 1 | 31,194 | 20 | 62,389 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The Smart Beaver from ABBYY invented a new message encryption method and now wants to check its performance. Checking it manually is long and tiresome, so he decided to ask the ABBYY Cup contestants for help.
A message is a sequence of n in... | instruction | 0 | 31,248 | 20 | 62,496 |
Tags: data structures
Correct Solution:
```
n,m,c = map(int,input().split())
a = list(map(int,input().split()))
b = list(map(int,input().split()))
pre=[0]*m
suf=[0]*(m+1)
ans=[0]*n
lp = min(m,n-m+1)
j=-2
for i in range(m):
pre[i]=(pre[i-1]+b[i])
for i in range(m-1,-1,-1):
suf[i]=suf[i+1]+b[i]
for i in range... | output | 1 | 31,248 | 20 | 62,497 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The Smart Beaver from ABBYY invented a new message encryption method and now wants to check its performance. Checking it manually is long and tiresome, so he decided to ask the ABBYY Cup contestants for help.
A message is a sequence of n in... | instruction | 0 | 31,249 | 20 | 62,498 |
Tags: data structures
Correct Solution:
```
len_message, len_key, mod = map(int, input().split())
message = list(map(int, input().split()))
key = list(map(int, input().split()))
sum, low, high = 0, 0, 0
result = message[:]
for i in range(len_message):
if high < len_key:
sum += key[high]
high += 1
... | output | 1 | 31,249 | 20 | 62,499 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The Smart Beaver from ABBYY invented a new message encryption method and now wants to check its performance. Checking it manually is long and tiresome, so he decided to ask the ABBYY Cup contestants for help.
A message is a sequence of n in... | instruction | 0 | 31,250 | 20 | 62,500 |
Tags: data structures
Correct Solution:
```
n, m, c = map(int, input().split())
N = list(map(int, input().split()))
M = list(map(int, input().split()))
SM = [0]
for v in M:
SM += [SM[-1] + v]
answer = []
for i, v in enumerate(N):
if i + len(M) < len(N):
l = 0
else:
l = len(M) - len(N... | output | 1 | 31,250 | 20 | 62,501 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The Smart Beaver from ABBYY invented a new message encryption method and now wants to check its performance. Checking it manually is long and tiresome, so he decided to ask the ABBYY Cup contestants for help.
A message is a sequence of n in... | instruction | 0 | 31,251 | 20 | 62,502 |
Tags: data structures
Correct Solution:
```
n, m, c = map(int, input().split())
a = list(map(int, input().split()))
b = list(map(int, input().split()))
s, k = 0, n - m
for i in range(n):
if i < m: s += b[i]
a[i] = (a[i] + s) % c
if i >= k: s -= b[i - k]
print(' '.join(str(i) for i in a))
``` | output | 1 | 31,251 | 20 | 62,503 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The Smart Beaver from ABBYY invented a new message encryption method and now wants to check its performance. Checking it manually is long and tiresome, so he decided to ask the ABBYY Cup contestants for help.
A message is a sequence of n in... | instruction | 0 | 31,252 | 20 | 62,504 |
Tags: data structures
Correct Solution:
```
n,m,c=map(int,input().split())
a=list(map(int,input().split()))
b=list(map(int,input().split()))
sum=0
for i in range(n):
if i<m:
sum=(sum+b[i])%c
if i>=n-m+1:
sum=(c+sum-b[i-(n-m+1)])%c
a[i]=(a[i]+sum)%c
print(' '.join(map(str,a)))
``` | output | 1 | 31,252 | 20 | 62,505 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The Smart Beaver from ABBYY invented a new message encryption method and now wants to check its performance. Checking it manually is long and tiresome, so he decided to ask the ABBYY Cup contestants for help.
A message is a sequence of n in... | instruction | 0 | 31,253 | 20 | 62,506 |
Tags: data structures
Correct Solution:
```
n,m,c = map(int,input().split())
a = list(input().split())
b = list(input().split())
sum = 0
for i in range(n):
if i<m:
sum = sum + int(b[i])
sum = sum%c
if i >= n - m + 1:
sum = c - int(b[i-n+m-1]) + sum
sum = sum%c
print((int(... | output | 1 | 31,253 | 20 | 62,507 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The Smart Beaver from ABBYY invented a new message encryption method and now wants to check its performance. Checking it manually is long and tiresome, so he decided to ask the ABBYY Cup contestants for help.
A message is a sequence of n in... | instruction | 0 | 31,254 | 20 | 62,508 |
Tags: data structures
Correct Solution:
```
from collections import defaultdict
for _ in range(1):
n,m,c=map(int,input().split())
a=list(map(int,input().split()))
b=list(map(int,input().split()))
cur_sum=0
ans=[0]*n
for i,j in enumerate(a):
if i<m:
# print(':',i)
... | output | 1 | 31,254 | 20 | 62,509 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Fox Ciel is playing a game with numbers now.
Ciel has n positive integers: x1, x2, ..., xn. She can do the following operation as many times as needed: select two different indexes i and j such that xi > xj hold, and then apply assignment ... | instruction | 0 | 31,314 | 20 | 62,628 |
Tags: greedy, math
Correct Solution:
```
from sys import stdin,stdout
st=lambda:list(stdin.readline().strip())
li=lambda:list(map(int,stdin.readline().split()))
mp=lambda:map(int,stdin.readline().split())
inp=lambda:int(stdin.readline())
pr=lambda n: stdout.write(str(n)+"\n")
from math import floor
mod=1000000007
IN... | output | 1 | 31,314 | 20 | 62,629 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A sequence of n integers is written on a blackboard. Soon Sasha will come to the blackboard and start the following actions: let x and y be two adjacent numbers (x before y), then he can remove ... | instruction | 0 | 31,496 | 20 | 62,992 |
No | output | 1 | 31,496 | 20 | 62,993 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A sequence of n integers is written on a blackboard. Soon Sasha will come to the blackboard and start the following actions: let x and y be two adjacent numbers (x before y), then he can remove ... | instruction | 0 | 31,497 | 20 | 62,994 |
No | output | 1 | 31,497 | 20 | 62,995 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A sequence of n integers is written on a blackboard. Soon Sasha will come to the blackboard and start the following actions: let x and y be two adjacent numbers (x before y), then he can remove ... | instruction | 0 | 31,498 | 20 | 62,996 |
No | output | 1 | 31,498 | 20 | 62,997 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A sequence of n integers is written on a blackboard. Soon Sasha will come to the blackboard and start the following actions: let x and y be two adjacent numbers (x before y), then he can remove ... | instruction | 0 | 31,499 | 20 | 62,998 |
No | output | 1 | 31,499 | 20 | 62,999 |
Provide a correct Python 3 solution for this coding contest problem.
One very experienced problem writer decided to prepare a problem for April Fools Day contest. The task was very simple - given an arithmetic expression, return the result of evaluating this expression. However, looks like there is a bug in the refere... | instruction | 0 | 31,520 | 20 | 63,040 |
"Correct Solution:
```
s = input().strip() + '+'
ans = 0
curr = 0
sign = 1
for c in s:
if c in '-+':
ans += sign*curr
curr = 0
if c == '-':
sign = -1
elif c == '+':
sign = 1
curr = curr*10 + (ord(c) - ord('0'))
print(ans)
``` | output | 1 | 31,520 | 20 | 63,041 |
Provide a correct Python 3 solution for this coding contest problem.
One very experienced problem writer decided to prepare a problem for April Fools Day contest. The task was very simple - given an arithmetic expression, return the result of evaluating this expression. However, looks like there is a bug in the refere... | instruction | 0 | 31,522 | 20 | 63,044 |
"Correct Solution:
```
e = input()
nr = 0
nrs = []
signs = []
for c in e:
if not c.isdigit():
nrs += [nr]
signs += [c]
nr = 0
nr = nr*10 + ord(c) - ord('0')
nrs += [nr]
res = nrs[0]
for i in range(len(signs)):
if signs[i] == '+':
res += nrs[i+1]
else:
res -= nrs[... | output | 1 | 31,522 | 20 | 63,045 |
Provide a correct Python 3 solution for this coding contest problem.
Palindrome
Problem Statement
Find the number of palindromes closest to the integer n.
Note that the non-negative integer x is the number of palindromes, which means that the character string in which x is expressed in decimal notation and the char... | instruction | 0 | 31,746 | 20 | 63,492 |
"Correct Solution:
```
l1 = [i for i in range(10)]
l2 = [int(str(c) + str(c)) for c in range(1, 10)]
l3 = [int(str(c1) + str(c2) + str(c1)) for c1 in range(1, 10) for c2 in range(10)]
l4 = [int(str(c1) + str(c2) + str(c2) + str(c1)) for c1 in range(1, 10) for c2 in range(10)]
l5 = [10001]
lst = l1 + l2 + l3 + l4 + l5
n... | output | 1 | 31,746 | 20 | 63,493 |
Provide a correct Python 3 solution for this coding contest problem.
Palindrome
Problem Statement
Find the number of palindromes closest to the integer n.
Note that the non-negative integer x is the number of palindromes, which means that the character string in which x is expressed in decimal notation and the char... | instruction | 0 | 31,747 | 20 | 63,494 |
"Correct Solution:
```
n = int(input())
s = list(range(10))
for i in range(1, 100):
t = str(i)
s.append(t+t[::-1])
for j in range(10):
s.append(t+str(j)+t[::-1])
s = list(map(int, s))
s.sort()
if n in s:
print(n)
else:
if n < s[0]:
print(s[0])
elif n > s[-1]:
print(s[-1... | output | 1 | 31,747 | 20 | 63,495 |
Provide a correct Python 3 solution for this coding contest problem.
Palindrome
Problem Statement
Find the number of palindromes closest to the integer n.
Note that the non-negative integer x is the number of palindromes, which means that the character string in which x is expressed in decimal notation and the char... | instruction | 0 | 31,748 | 20 | 63,496 |
"Correct Solution:
```
def f(n):
n=str(n)
if n==n[::-1]:return 1
a=b=int(input())
while 1:
if f(b): print(b);break
a-=1
if f(a):print(a);break
b+=1
``` | output | 1 | 31,748 | 20 | 63,497 |
Provide a correct Python 3 solution for this coding contest problem.
Palindrome
Problem Statement
Find the number of palindromes closest to the integer n.
Note that the non-negative integer x is the number of palindromes, which means that the character string in which x is expressed in decimal notation and the char... | instruction | 0 | 31,749 | 20 | 63,498 |
"Correct Solution:
```
import bisect
rev=[]
for i in range(1,10002):
if str(i)==str(i)[::-1]:rev.append(i)
n=int(input())
ind= bisect.bisect_left(rev,n)
if abs(n-rev[ind-1])<=abs(n-rev[ind]):
print(rev[ind-1])
else:
print(rev[ind])
``` | output | 1 | 31,749 | 20 | 63,499 |
Provide a correct Python 3 solution for this coding contest problem.
Palindrome
Problem Statement
Find the number of palindromes closest to the integer n.
Note that the non-negative integer x is the number of palindromes, which means that the character string in which x is expressed in decimal notation and the char... | instruction | 0 | 31,750 | 20 | 63,500 |
"Correct Solution:
```
def check(n):
n = str(n)
if n == n[::-1]:
return True
else:
return False
n = int(input())
if check(n):
print(n)
else:
base = n
while 1:
n -= 1
if check(n):
ans = n
break
diff = base - n
n = base
for i ... | output | 1 | 31,750 | 20 | 63,501 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Palindrome
Problem Statement
Find the number of palindromes closest to the integer n.
Note that the non-negative integer x is the number of palindromes, which means that the character string ... | instruction | 0 | 31,751 | 20 | 63,502 |
No | output | 1 | 31,751 | 20 | 63,503 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
It can be shown that any positive integer x can be uniquely represented as x = 1 + 2 + 4 + ... + 2k - 1 + r, where k and r are integers, k ≥ 0, 0 < r ≤ 2k. Let's call that representation prairie... | instruction | 0 | 32,139 | 20 | 64,278 |
No | output | 1 | 32,139 | 20 | 64,279 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
It can be shown that any positive integer x can be uniquely represented as x = 1 + 2 + 4 + ... + 2k - 1 + r, where k and r are integers, k ≥ 0, 0 < r ≤ 2k. Let's call that representation prairie... | instruction | 0 | 32,140 | 20 | 64,280 |
No | output | 1 | 32,140 | 20 | 64,281 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
It can be shown that any positive integer x can be uniquely represented as x = 1 + 2 + 4 + ... + 2k - 1 + r, where k and r are integers, k ≥ 0, 0 < r ≤ 2k. Let's call that representation prairie... | instruction | 0 | 32,141 | 20 | 64,282 |
No | output | 1 | 32,141 | 20 | 64,283 |
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