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.
You have number a, whose decimal representation quite luckily contains digits 1, 6, 8, 9. Rearrange the digits in its decimal representation so that the resulting number will be divisible by 7.
Number a doesn't contain any leading zeroes an... | instruction | 0 | 63,473 | 20 | 126,946 |
Tags: math, number theory
Correct Solution:
```
a=input()
cnt=[0]*10
for i in (1,6,8,9):
cnt[i]=-1
for i in a:
cnt[int(i)]+=1
mod = [1869, 1968, 9816, 6198, 1698, 1986, 1896, 1869]
modCnt=0
for i in range(1,10):
for j in range(cnt[i]):
modCnt= (modCnt*3 + i)%7
print(str(i)*cnt[i], end='')
modCnt=(1000... | output | 1 | 63,473 | 20 | 126,947 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You have number a, whose decimal representation quite luckily contains digits 1, 6, 8, 9. Rearrange the digits in its decimal representation so that the resulting number will be divisible by 7.
Number a doesn't contain any leading zeroes an... | instruction | 0 | 63,474 | 20 | 126,948 |
Tags: math, number theory
Correct Solution:
```
a=input()
cnt=[0]*10
for i in (1,6,8,9):
cnt[i]=-1
for i in a:
cnt[int(i)]+=1
mod = [1869, 1968, 9816, 6198, 1698, 1986, 1896, 1869]
modCnt=0
for i in range(1,10):
for j in range(cnt[i]):
modCnt= (modCnt*3 + i)%7
print(str(i)*cnt[i], end='')
modCnt=(10000*modCnt)%7
... | output | 1 | 63,474 | 20 | 126,949 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You have number a, whose decimal representation quite luckily contains digits 1, 6, 8, 9. Rearrange the digits in its decimal representation so that the resulting number will be divisible by 7.
Number a doesn't contain any leading zeroes an... | instruction | 0 | 63,475 | 20 | 126,950 |
Tags: math, number theory
Correct Solution:
```
a = input()
b=[0]*10
total = 0
for i in a:
b[int(i)]+=1
for i in [1,6,8,9]:
b[i]-=1
for i in range(1,10):
for j in range(b[i]):
total = (total * 10 + i) % 7
print(str(i)*b[i],end = '')
total = (10000 * total)%7
z = ['1869','6189','9186','... | output | 1 | 63,475 | 20 | 126,951 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You have number a, whose decimal representation quite luckily contains digits 1, 6, 8, 9. Rearrange the digits in its decimal representation so that the resulting number will be divisible by 7.
Number a doesn't contain any leading zeroes an... | instruction | 0 | 63,476 | 20 | 126,952 |
Tags: math, number theory
Correct Solution:
```
# Legends Always Come Up with Solution
# Author: Manvir Singh
import os
from io import BytesIO, IOBase
import sys
from itertools import permutations
from collections import Counter
def main():
a=input().rstrip()
n=len(a)
a=Counter(a)
for i in"6189":
... | output | 1 | 63,476 | 20 | 126,953 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You have number a, whose decimal representation quite luckily contains digits 1, 6, 8, 9. Rearrange the digits in its decimal representation so that the resulting number will be divisible by 7.
Number a doesn't contain any leading zeroes an... | instruction | 0 | 63,477 | 20 | 126,954 |
Tags: math, number theory
Correct Solution:
```
######### ## ## ## #### ##### ## # ## # ##
# # # # # # # # # # # # # # # # # # #
# # # # ### # # # # # # # # # # # #
# ##### # # # # ### # # # # # # # # #####
# # # # # #... | output | 1 | 63,477 | 20 | 126,955 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You have number a, whose decimal representation quite luckily contains digits 1, 6, 8, 9. Rearrange the digits in its decimal representation so that the resulting number will be divisible by 7.
... | instruction | 0 | 63,478 | 20 | 126,956 |
No | output | 1 | 63,478 | 20 | 126,957 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You have number a, whose decimal representation quite luckily contains digits 1, 6, 8, 9. Rearrange the digits in its decimal representation so that the resulting number will be divisible by 7.
... | instruction | 0 | 63,479 | 20 | 126,958 |
No | output | 1 | 63,479 | 20 | 126,959 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You have number a, whose decimal representation quite luckily contains digits 1, 6, 8, 9. Rearrange the digits in its decimal representation so that the resulting number will be divisible by 7.
... | instruction | 0 | 63,480 | 20 | 126,960 |
No | output | 1 | 63,480 | 20 | 126,961 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You have number a, whose decimal representation quite luckily contains digits 1, 6, 8, 9. Rearrange the digits in its decimal representation so that the resulting number will be divisible by 7.
... | instruction | 0 | 63,481 | 20 | 126,962 |
No | output | 1 | 63,481 | 20 | 126,963 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Little X has met the following problem recently.
Let's define f(x) as the sum of digits in decimal representation of number x (for example, f(1234) = 1 + 2 + 3 + 4). You are to calculate <image>
Of course Little X has solved this problem ... | instruction | 0 | 63,498 | 20 | 126,996 |
Tags: binary search, constructive algorithms, math
Correct Solution:
```
a=int(input())
b,c=10**35,a-45*35*10**34%a
print(c,c+b-1)
``` | output | 1 | 63,498 | 20 | 126,997 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Little X has met the following problem recently.
Let's define f(x) as the sum of digits in decimal representation of number x (for example, f(1234) = 1 + 2 + 3 + 4). You are to calculate <image>
Of course Little X has solved this problem ... | instruction | 0 | 63,499 | 20 | 126,998 |
Tags: binary search, constructive algorithms, math
Correct Solution:
```
a = int(input())
g = 45 * (10 ** 19) * 20
g = a + (a - g) % a
print(g, 10 ** 20 + g - 1)
``` | output | 1 | 63,499 | 20 | 126,999 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Little X has met the following problem recently.
Let's define f(x) as the sum of digits in decimal representation of number x (for example, f(1234) = 1 + 2 + 3 + 4). You are to calculate <image>
Of course Little X has solved this problem ... | instruction | 0 | 63,500 | 20 | 127,000 |
Tags: binary search, constructive algorithms, math
Correct Solution:
```
m = int(input())
x,t=10**100-1,m-100*45*10**99%m
print(t,t+x)
``` | output | 1 | 63,500 | 20 | 127,001 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Little X has met the following problem recently.
Let's define f(x) as the sum of digits in decimal representation of number x (for example, f(1234) = 1 + 2 + 3 + 4). You are to calculate <image>
Of course Little X has solved this problem ... | instruction | 0 | 63,501 | 20 | 127,002 |
Tags: binary search, constructive algorithms, math
Correct Solution:
```
from math import inf as inf
from math import *
from collections import *
import sys
from itertools import permutations
input=sys.stdin.readline
t=1
while(t):
t-=1
n=int(input())
f=n-45*20*(10**19)%n
print(f,f+(10**20-1))
``` | output | 1 | 63,501 | 20 | 127,003 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Little X has met the following problem recently.
Let's define f(x) as the sum of digits in decimal representation of number x (for example, f(1234) = 1 + 2 + 3 + 4). You are to calculate <image>
Of course Little X has solved this problem ... | instruction | 0 | 63,502 | 20 | 127,004 |
Tags: binary search, constructive algorithms, math
Correct Solution:
```
a=int(input())
b,c=10**100,a-4500*10**99%a
print(c,c+b-1)
``` | output | 1 | 63,502 | 20 | 127,005 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Little X has met the following problem recently.
Let's define f(x) as the sum of digits in decimal representation of number x (for example, f(1234) = 1 + 2 + 3 + 4). You are to calculate <image>
Of course Little X has solved this problem ... | instruction | 0 | 63,503 | 20 | 127,006 |
Tags: binary search, constructive algorithms, math
Correct Solution:
```
__author__ = 'andybear'
m=int(input())
x,t=10**100-1,m-100*45*10**99%m
print(t,t+x)
``` | output | 1 | 63,503 | 20 | 127,007 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Little X has met the following problem recently.
Let's define f(x) as the sum of digits in decimal representation of number x (for example, f(1234) = 1 + 2 + 3 + 4). You are to calculate <image>
Of course Little X has solved this problem ... | instruction | 0 | 63,504 | 20 | 127,008 |
Tags: binary search, constructive algorithms, math
Correct Solution:
```
a = int(input())
k = 19
x = (45 * k * 10**(k-1))% a
l = a - x
r = l + 10**k - 1
print(l, r)
``` | output | 1 | 63,504 | 20 | 127,009 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Little X has met the following problem recently.
Let's define f(x) as the sum of digits in decimal representation of number x (for example, f(1234) = 1 + 2 + 3 + 4). You are to calculate <imag... | instruction | 0 | 63,505 | 20 | 127,010 |
No | output | 1 | 63,505 | 20 | 127,011 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Little X has met the following problem recently.
Let's define f(x) as the sum of digits in decimal representation of number x (for example, f(1234) = 1 + 2 + 3 + 4). You are to calculate <imag... | instruction | 0 | 63,506 | 20 | 127,012 |
No | output | 1 | 63,506 | 20 | 127,013 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Little X has met the following problem recently.
Let's define f(x) as the sum of digits in decimal representation of number x (for example, f(1234) = 1 + 2 + 3 + 4). You are to calculate <imag... | instruction | 0 | 63,507 | 20 | 127,014 |
No | output | 1 | 63,507 | 20 | 127,015 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Little X has met the following problem recently.
Let's define f(x) as the sum of digits in decimal representation of number x (for example, f(1234) = 1 + 2 + 3 + 4). You are to calculate <imag... | instruction | 0 | 63,508 | 20 | 127,016 |
No | output | 1 | 63,508 | 20 | 127,017 |
Provide tags and a correct Python 3 solution for this coding contest problem.
This is an interactive problem.
Vasya and Petya are going to play the following game: Petya has some positive integer number a. After that Vasya should guess this number using the following questions. He can say a pair of non-negative integ... | instruction | 0 | 64,006 | 20 | 128,012 |
Tags: binary search, constructive algorithms, interactive
Correct Solution:
```
a=input()
while a!="end":
if a=="start":
for i in range(30):
print("?",2**i,2*2**i)
if input()=="x":
break
bot=2**i
top=min(2**(i+1),1000000000)
if bot==1:
... | output | 1 | 64,006 | 20 | 128,013 |
Provide tags and a correct Python 3 solution for this coding contest problem.
This is an interactive problem.
Vasya and Petya are going to play the following game: Petya has some positive integer number a. After that Vasya should guess this number using the following questions. He can say a pair of non-negative integ... | instruction | 0 | 64,007 | 20 | 128,014 |
Tags: binary search, constructive algorithms, interactive
Correct Solution:
```
from sys import stdout
def ask(x, y):
print('?', x, y)
stdout.flush()
x = input()
return x == 'x'
def show_res(res):
print('!', res)
stdout.flush()
def prepare_game():
gm = input()
if gm[0] != 's':
exit(0)
INF = int(1e9) + 1
... | output | 1 | 64,007 | 20 | 128,015 |
Provide tags and a correct Python 3 solution for this coding contest problem.
This is an interactive problem.
Vasya and Petya are going to play the following game: Petya has some positive integer number a. After that Vasya should guess this number using the following questions. He can say a pair of non-negative integ... | instruction | 0 | 64,008 | 20 | 128,016 |
Tags: binary search, constructive algorithms, interactive
Correct Solution:
```
#Code by Sounak, IIESTS
#------------------------------warmup----------------------------
import os
import sys
import math
from io import BytesIO, IOBase
import io
from fractions import Fraction
import collections
from itertools import per... | output | 1 | 64,008 | 20 | 128,017 |
Provide tags and a correct Python 3 solution for this coding contest problem.
This is an interactive problem.
Vasya and Petya are going to play the following game: Petya has some positive integer number a. After that Vasya should guess this number using the following questions. He can say a pair of non-negative integ... | instruction | 0 | 64,009 | 20 | 128,018 |
Tags: binary search, constructive algorithms, interactive
Correct Solution:
```
from sys import stdout
def ask(x,y) :
print('?',x,y)
stdout.flush()
return input() == 'x'
def work() :
if ask(0, 1) : return 1
l = 1
while ask(l*2,l) : l*=2
r = min(1000000000, l*2+1)
l += 1
while r > l... | output | 1 | 64,009 | 20 | 128,019 |
Provide tags and a correct Python 3 solution for this coding contest problem.
This is an interactive problem.
Vasya and Petya are going to play the following game: Petya has some positive integer number a. After that Vasya should guess this number using the following questions. He can say a pair of non-negative integ... | instruction | 0 | 64,010 | 20 | 128,020 |
Tags: binary search, constructive algorithms, interactive
Correct Solution:
```
import sys
def question(x, y, a):
#a = 1543
if x % a >= y % a:
return "x"
else:
return "y"
def real_question(x, y):
print("? {0} {1}".format(x, y))
sys.stdout.flush()
return input()
class Codefo... | output | 1 | 64,010 | 20 | 128,021 |
Provide tags and a correct Python 3 solution for this coding contest problem.
This is an interactive problem.
Vasya and Petya are going to play the following game: Petya has some positive integer number a. After that Vasya should guess this number using the following questions. He can say a pair of non-negative integ... | instruction | 0 | 64,011 | 20 | 128,022 |
Tags: binary search, constructive algorithms, interactive
Correct Solution:
```
import sys
def ask(x, y):
print("?", x, y)
return input() == "y"
while input() == "start":
if not ask(0, 1):
print("! 1")
continue
d = 1
while ask(d, d * 2):
d *= 2
r = d
l = d // 2
... | output | 1 | 64,011 | 20 | 128,023 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
This is an interactive problem.
Vasya and Petya are going to play the following game: Petya has some positive integer number a. After that Vasya should guess this number using the following que... | instruction | 0 | 64,012 | 20 | 128,024 |
No | output | 1 | 64,012 | 20 | 128,025 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
This is an interactive problem.
Vasya and Petya are going to play the following game: Petya has some positive integer number a. After that Vasya should guess this number using the following que... | instruction | 0 | 64,013 | 20 | 128,026 |
No | output | 1 | 64,013 | 20 | 128,027 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
This is an interactive problem.
Vasya and Petya are going to play the following game: Petya has some positive integer number a. After that Vasya should guess this number using the following que... | instruction | 0 | 64,014 | 20 | 128,028 |
No | output | 1 | 64,014 | 20 | 128,029 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
This is an interactive problem.
Vasya and Petya are going to play the following game: Petya has some positive integer number a. After that Vasya should guess this number using the following que... | instruction | 0 | 64,015 | 20 | 128,030 |
No | output | 1 | 64,015 | 20 | 128,031 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Tokitsukaze is playing a room escape game designed by SkywalkerT. In this game, she needs to find out hidden clues in the room to reveal a way to escape.
After a while, she realizes that the on... | instruction | 0 | 64,064 | 20 | 128,128 |
No | output | 1 | 64,064 | 20 | 128,129 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Tokitsukaze is playing a room escape game designed by SkywalkerT. In this game, she needs to find out hidden clues in the room to reveal a way to escape.
After a while, she realizes that the on... | instruction | 0 | 64,065 | 20 | 128,130 |
No | output | 1 | 64,065 | 20 | 128,131 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Tokitsukaze is playing a room escape game designed by SkywalkerT. In this game, she needs to find out hidden clues in the room to reveal a way to escape.
After a while, she realizes that the on... | instruction | 0 | 64,066 | 20 | 128,132 |
No | output | 1 | 64,066 | 20 | 128,133 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Petya loves lucky numbers. Everybody knows that lucky numbers are positive integers whose decimal representation contains only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not.
Let next(x) be the mi... | instruction | 0 | 64,067 | 20 | 128,134 |
Tags: implementation
Correct Solution:
```
#!/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 *
from collections import *
# sys.setrecursionlimit(10**... | output | 1 | 64,067 | 20 | 128,135 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Petya loves lucky numbers. Everybody knows that lucky numbers are positive integers whose decimal representation contains only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not.
Let next(x) be the mi... | instruction | 0 | 64,068 | 20 | 128,136 |
Tags: implementation
Correct Solution:
```
n = (input()).split()
l = int(n[0])
r = int(n[1])
a = []
x = []
a.append([])
a[0].append('4')
a[0].append('7')
for i in range(1,10):
a.append([])
for j in a[i-1]:
a[i].append('4'+j)
a[i].append('7'+j)
for j in a[i]:
x.append(int(j... | output | 1 | 64,068 | 20 | 128,137 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Petya loves lucky numbers. Everybody knows that lucky numbers are positive integers whose decimal representation contains only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not.
Let next(x) be the mi... | instruction | 0 | 64,069 | 20 | 128,138 |
Tags: implementation
Correct Solution:
```
lucky = [4, 7]
n = 1
length = 0
while n < 10:
check = lucky[length:(length+2**(n))]
for x in check:
lucky.append(int("4"+ str(x)))
for x in check:
lucky.append(int("7"+str(x)))
length += 2**n
n += 1
l, r = map(int, input().split())
ans = 0
i... | output | 1 | 64,069 | 20 | 128,139 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Petya loves lucky numbers. Everybody knows that lucky numbers are positive integers whose decimal representation contains only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not.
Let next(x) be the mi... | instruction | 0 | 64,070 | 20 | 128,140 |
Tags: implementation
Correct Solution:
```
l,r = [int(x) for x in input().strip().split()]
def next(n,k):
s = n
n = int(n)
if int("4"*k)>=n:
return "4"*k
elif int("7"*k)<n:
return "4"*(k+1)
elif 4<int(s[0])<7:
return "7"+"4"*(k-1)
if not s[1:]=="":
a = next(s[1:],k-1)
if s[0]=="4":
if len(str(a))... | output | 1 | 64,070 | 20 | 128,141 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Petya loves lucky numbers. Everybody knows that lucky numbers are positive integers whose decimal representation contains only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not.
Let next(x) be the mi... | instruction | 0 | 64,071 | 20 | 128,142 |
Tags: implementation
Correct Solution:
```
def f(a,x):
if x//1e10>0:
return
a.append(x)
f(a,x*10+4)
f(a,x*10+7)
a,ans,i=[],0,0
f(a,4)
f(a,7)
a.sort()
L,R=map(int,input().split())
while L<=R:
while L>a[i]:i+=1
ans+=a[i]*(min(a[i],R)-L+1)
L=a[i]+1
print(ans)
``` | output | 1 | 64,071 | 20 | 128,143 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Petya loves lucky numbers. Everybody knows that lucky numbers are positive integers whose decimal representation contains only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not.
Let next(x) be the mi... | instruction | 0 | 64,072 | 20 | 128,144 |
Tags: implementation
Correct Solution:
```
lucky=[]
MAX=10000000000
def func(s):
s=s*10
if s>MAX:
return
lucky.append(s+4)
lucky.append(s+7)
func(s+4)
func(s+7)
func(0)
lucky.sort()
l,r=[int(x) for x in input().split(' ')]
i=0
j=0
while(l>lucky[i]):
i+=1
while(r>lucky[j]):
j+=1
ans=0
for x in range(i+1,j+1... | output | 1 | 64,072 | 20 | 128,145 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Petya loves lucky numbers. Everybody knows that lucky numbers are positive integers whose decimal representation contains only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not.
Let next(x) be the mi... | instruction | 0 | 64,073 | 20 | 128,146 |
Tags: implementation
Correct Solution:
```
def ii(): return int(input())
def si(): return input()
def mi(): return map(int,input().split())
def li(): return list(mi())
import math
le,r=mi()
l=[]
def F(x):
l.append(x)
if x>r*10:return
F(10*x+4)
F(10*x+7)
F(0)
l.sort()
s=0
i=le-1
j=0
while(i<... | output | 1 | 64,073 | 20 | 128,147 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Petya loves lucky numbers. Everybody knows that lucky numbers are positive integers whose decimal representation contains only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not.
Let next(x) be the mi... | instruction | 0 | 64,074 | 20 | 128,148 |
Tags: implementation
Correct Solution:
```
from itertools import product
all_lucky = [('0')]
for i in range(1, 11):
all_lucky += list(product('47', repeat=i))
all_lucky = [int("".join(x)) for x in all_lucky]
all_lucky.sort()
left, right = map(int, input().split())
result = 0
prev = left
pos = 0
while all_luck... | output | 1 | 64,074 | 20 | 128,149 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Petya loves lucky numbers. Everybody knows that lucky numbers are positive integers whose decimal representation contains only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky... | instruction | 0 | 64,075 | 20 | 128,150 |
Yes | output | 1 | 64,075 | 20 | 128,151 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Petya loves lucky numbers. Everybody knows that lucky numbers are positive integers whose decimal representation contains only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky... | instruction | 0 | 64,076 | 20 | 128,152 |
Yes | output | 1 | 64,076 | 20 | 128,153 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Petya loves lucky numbers. Everybody knows that lucky numbers are positive integers whose decimal representation contains only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky... | instruction | 0 | 64,077 | 20 | 128,154 |
Yes | output | 1 | 64,077 | 20 | 128,155 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Petya loves lucky numbers. Everybody knows that lucky numbers are positive integers whose decimal representation contains only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky... | instruction | 0 | 64,078 | 20 | 128,156 |
Yes | output | 1 | 64,078 | 20 | 128,157 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Petya loves lucky numbers. Everybody knows that lucky numbers are positive integers whose decimal representation contains only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky... | instruction | 0 | 64,079 | 20 | 128,158 |
No | output | 1 | 64,079 | 20 | 128,159 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Petya loves lucky numbers. Everybody knows that lucky numbers are positive integers whose decimal representation contains only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky... | instruction | 0 | 64,080 | 20 | 128,160 |
No | output | 1 | 64,080 | 20 | 128,161 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Petya loves lucky numbers. Everybody knows that lucky numbers are positive integers whose decimal representation contains only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky... | instruction | 0 | 64,081 | 20 | 128,162 |
No | output | 1 | 64,081 | 20 | 128,163 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Petya loves lucky numbers. Everybody knows that lucky numbers are positive integers whose decimal representation contains only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky... | instruction | 0 | 64,082 | 20 | 128,164 |
No | output | 1 | 64,082 | 20 | 128,165 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Vasya is sitting on an extremely boring math class. To have fun, he took a piece of paper and wrote out n numbers on a single line. After that, Vasya began to write out different ways to put pluses ("+") in the line between certain digits in... | instruction | 0 | 64,381 | 20 | 128,762 |
Tags: combinatorics, dp, math, number theory
Correct Solution:
```
n, k = map(int, input().split())
t = list(map(int, input()))
p, d = 1, 10**9 + 7
s = 0
f = [1] * n
for i in range(2, n):
f[i] = (i * f[i - 1]) % d
c = lambda a, b: 0 if a > b else (f[b] * pow(f[a] * f[b -a], d - 2, d)) % d
if k:
u = [0] * (n + 1)
... | output | 1 | 64,381 | 20 | 128,763 |
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