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.
Sasha grew up and went to first grade. To celebrate this event her mother bought her a multiplication table M with n rows and n columns such that M_{ij}=a_i ⋅ a_j where a_1, ..., a_n is some seq... | instruction | 0 | 4,269 | 20 | 8,538 |
No | output | 1 | 4,269 | 20 | 8,539 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Sasha grew up and went to first grade. To celebrate this event her mother bought her a multiplication table M with n rows and n columns such that M_{ij}=a_i ⋅ a_j where a_1, ..., a_n is some seq... | instruction | 0 | 4,270 | 20 | 8,540 |
No | output | 1 | 4,270 | 20 | 8,541 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a sequence of positive integers a1, a2, ..., an. Find all such indices i, that the i-th element equals the arithmetic mean of all other elements (that is all elements except for this one).
Input
The first line contains the in... | instruction | 0 | 4,335 | 20 | 8,670 |
Tags: brute force, implementation
Correct Solution:
```
n=int(input())
L=list(map(int,input().split()))
s=sum(L)
Ans=""
cnt=0
for i in range(n):
x=(s-L[i])//(n-1)
if(x*(n-1)!=s-L[i]):
continue
if(x==L[i]):
Ans+=str(i+1)+" "
cnt+=1
print(cnt)
if(cnt!=0):
print(Ans)
``` | output | 1 | 4,335 | 20 | 8,671 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a sequence of positive integers a1, a2, ..., an. Find all such indices i, that the i-th element equals the arithmetic mean of all other elements (that is all elements except for this one).
Input
The first line contains the in... | instruction | 0 | 4,341 | 20 | 8,682 |
Tags: brute force, implementation
Correct Solution:
```
import sys
S = sys.stdin.read()
S = [int(x) for x in S.split('\n')[1].split()]
s = sum(S)
n = len(S)
T = [i+1 for i in range(n) if n*S[i] == s]
print(len(T))
print(' '.join([str(x) for x in T]))
``` | output | 1 | 4,341 | 20 | 8,683 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a sequence of positive integers a1, a2, ..., an. Find all such indices i, that the i-th element equals the arithmetic mean of all other elements (that is all elements except for this one).
Input
The first line contains the in... | instruction | 0 | 4,342 | 20 | 8,684 |
Tags: brute force, implementation
Correct Solution:
```
m = int(input())
num = [int(n) for n in input().split()]
sum = 0
for i in range(0,m):
sum += num[i]
if sum % m:
print('0')
else:
ave = sum // m
cnt = 0
for i in range(0,m):
if num[i] == ave:
cnt += 1
print(cnt)
for i... | output | 1 | 4,342 | 20 | 8,685 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The Little Elephant very much loves sums on intervals.
This time he has a pair of integers l and r (l ≤ r). The Little Elephant has to find the number of such integers x (l ≤ x ≤ r), that the first digit of integer x equals the last one (in... | instruction | 0 | 4,452 | 20 | 8,904 |
Tags: binary search, combinatorics, dp
Correct Solution:
```
######### ## ## ## #### ##### ## # ## # ##
# # # # # # # # # # # # # # # # # # #
# # # # ### # # # # # # # # # # # #
# ##### # # # # ### # # # # # # # # #####
# # ... | output | 1 | 4,452 | 20 | 8,905 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The Little Elephant very much loves sums on intervals.
This time he has a pair of integers l and r (l ≤ r). The Little Elephant has to find the number of such integers x (l ≤ x ≤ r), that the first digit of integer x equals the last one (in... | instruction | 0 | 4,453 | 20 | 8,906 |
Tags: binary search, combinatorics, dp
Correct Solution:
```
a1 = list(map(int,input().split()))
if (a1[0] < 10) & (a1[1] < 10):
print(a1[1] - a1[0]+1)
elif (a1[0] < 10) :
b = a1[1] - int(str(a1[1])[-1])
ans = 10 - a1[0] + b//10
if str(a1[1])[0] > str(a1[1])[len(str(a1[1]))-1]:
ans -= 1
else... | output | 1 | 4,453 | 20 | 8,907 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The Little Elephant very much loves sums on intervals.
This time he has a pair of integers l and r (l ≤ r). The Little Elephant has to find the number of such integers x (l ≤ x ≤ r), that the first digit of integer x equals the last one (in... | instruction | 0 | 4,454 | 20 | 8,908 |
Tags: binary search, combinatorics, dp
Correct Solution:
```
def func(b):
n2 = len(b)
ans = 0
for i in range(1, n2):
if i == 1: ans += 9
else:
ans += 9 * (10 ** (i - 2))
for i in range(0, n2 - 1):
if n2 > 2:
if i == 0: tmp = (int(b[i]) - 1) * (10 ** ... | output | 1 | 4,454 | 20 | 8,909 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The Little Elephant very much loves sums on intervals.
This time he has a pair of integers l and r (l ≤ r). The Little Elephant has to find the number of such integers x (l ≤ x ≤ r), that the first digit of integer x equals the last one (in... | instruction | 0 | 4,455 | 20 | 8,910 |
Tags: binary search, combinatorics, dp
Correct Solution:
```
l, r = map(int, input().split())
result = 0
for digit in range(1, 10):
d_str = str(digit)
for length in range(3, 19):
if int(d_str + (length - 2) * '0' + d_str) <= r and \
int(d_str + (length - 2) * '9' + d_str) >= l:
... | output | 1 | 4,455 | 20 | 8,911 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The Little Elephant very much loves sums on intervals.
This time he has a pair of integers l and r (l ≤ r). The Little Elephant has to find the number of such integers x (l ≤ x ≤ r), that the first digit of integer x equals the last one (in... | instruction | 0 | 4,456 | 20 | 8,912 |
Tags: binary search, combinatorics, dp
Correct Solution:
```
def f(x): return x if x<10 else x//10+9-(0 if str(x)[0]<=str(x)[-1] else 1)
l, r = map(int,input().split())
print(f(r)-f(l-1))
# Made By Mostafa_Khaled
``` | output | 1 | 4,456 | 20 | 8,913 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The Little Elephant very much loves sums on intervals.
This time he has a pair of integers l and r (l ≤ r). The Little Elephant has to find the number of such integers x (l ≤ x ≤ r), that the first digit of integer x equals the last one (in... | instruction | 0 | 4,457 | 20 | 8,914 |
Tags: binary search, combinatorics, dp
Correct Solution:
```
import sys
import math as m
p = [0]*20
def fi():
return sys.stdin.readline()
def check(n):
ans = 0
ans+=min(9,n)
for i in range (10):
if i :
if 10*i + i <=n:
ans+=1
for i in range (3,19):
for j in range (1,10):
no = p[i-1]*j+j
lo = -1
... | output | 1 | 4,457 | 20 | 8,915 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The Little Elephant very much loves sums on intervals.
This time he has a pair of integers l and r (l ≤ r). The Little Elephant has to find the number of such integers x (l ≤ x ≤ r), that the first digit of integer x equals the last one (in... | instruction | 0 | 4,458 | 20 | 8,916 |
Tags: binary search, combinatorics, dp
Correct Solution:
```
#from bisect import bisect_left as bl #c++ lowerbound bl(array,element)
#from bisect import bisect_right as br #c++ upperbound br(array,element)
#from __future__ import print_function, division #while using python2
# from itert... | output | 1 | 4,458 | 20 | 8,917 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The Little Elephant very much loves sums on intervals.
This time he has a pair of integers l and r (l ≤ r). The Little Elephant has to find the number of such integers x (l ≤ x ≤ r), that the first digit of integer x equals the last one (in... | instruction | 0 | 4,459 | 20 | 8,918 |
Tags: binary search, combinatorics, dp
Correct Solution:
```
l, r = map(int, input().split())
ans, t = 0, dict({l - 1: 0, r: 0})
if l == r:
exit(print(1 if str(l)[0] == str(l)[-1] else 0))
for num in [l - 1, r]:
le = 1
while True:
if len(str(num)) > le:
if le < 3:
t[num]... | output | 1 | 4,459 | 20 | 8,919 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The Little Elephant very much loves sums on intervals.
This time he has a pair of integers l and r (l ≤ r). The Little Elephant has to find the number of such integers x (l ≤ x ≤ r), that the f... | instruction | 0 | 4,460 | 20 | 8,920 |
Yes | output | 1 | 4,460 | 20 | 8,921 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The Little Elephant very much loves sums on intervals.
This time he has a pair of integers l and r (l ≤ r). The Little Elephant has to find the number of such integers x (l ≤ x ≤ r), that the f... | instruction | 0 | 4,461 | 20 | 8,922 |
Yes | output | 1 | 4,461 | 20 | 8,923 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The Little Elephant very much loves sums on intervals.
This time he has a pair of integers l and r (l ≤ r). The Little Elephant has to find the number of such integers x (l ≤ x ≤ r), that the f... | instruction | 0 | 4,462 | 20 | 8,924 |
Yes | output | 1 | 4,462 | 20 | 8,925 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The Little Elephant very much loves sums on intervals.
This time he has a pair of integers l and r (l ≤ r). The Little Elephant has to find the number of such integers x (l ≤ x ≤ r), that the f... | instruction | 0 | 4,463 | 20 | 8,926 |
Yes | output | 1 | 4,463 | 20 | 8,927 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The Little Elephant very much loves sums on intervals.
This time he has a pair of integers l and r (l ≤ r). The Little Elephant has to find the number of such integers x (l ≤ x ≤ r), that the f... | instruction | 0 | 4,464 | 20 | 8,928 |
No | output | 1 | 4,464 | 20 | 8,929 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The Little Elephant very much loves sums on intervals.
This time he has a pair of integers l and r (l ≤ r). The Little Elephant has to find the number of such integers x (l ≤ x ≤ r), that the f... | instruction | 0 | 4,465 | 20 | 8,930 |
No | output | 1 | 4,465 | 20 | 8,931 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The Little Elephant very much loves sums on intervals.
This time he has a pair of integers l and r (l ≤ r). The Little Elephant has to find the number of such integers x (l ≤ x ≤ r), that the f... | instruction | 0 | 4,466 | 20 | 8,932 |
No | output | 1 | 4,466 | 20 | 8,933 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The Little Elephant very much loves sums on intervals.
This time he has a pair of integers l and r (l ≤ r). The Little Elephant has to find the number of such integers x (l ≤ x ≤ r), that the f... | instruction | 0 | 4,467 | 20 | 8,934 |
No | output | 1 | 4,467 | 20 | 8,935 |
Provide tags and a correct Python 3 solution for this coding contest problem.
There is a long plate s containing n digits. Iahub wants to delete some digits (possibly none, but he is not allowed to delete all the digits) to form his "magic number" on the plate, a number that is divisible by 5. Note that, the resulting... | instruction | 0 | 4,516 | 20 | 9,032 |
Tags: combinatorics, math
Correct Solution:
```
input_string = input()
n = int(input())
len_tmp = len(input_string)
const = 1000000007
def fast_pow(a, b, mod):
c=bin(b)[2:]
result=1
for i in c:
result = (result*result * a**int(i))%mod
return result
def inverse(a, mod):
#mod-простое
ret... | output | 1 | 4,516 | 20 | 9,033 |
Provide tags and a correct Python 3 solution for this coding contest problem.
There is a long plate s containing n digits. Iahub wants to delete some digits (possibly none, but he is not allowed to delete all the digits) to form his "magic number" on the plate, a number that is divisible by 5. Note that, the resulting... | instruction | 0 | 4,517 | 20 | 9,034 |
Tags: combinatorics, math
Correct Solution:
```
A = input()
n = int(input())
m = 1000000007
a = len(A)
x = pow(2,a*n,m)-1+m
y = pow(2,a,m)-1+m
f = x*pow(y,m-2,m)%m
s = 0
for r in range(a):
if A[r] in '05':
s = (s+pow(2,r,m))%m
print((s*f)%m)
``` | output | 1 | 4,517 | 20 | 9,035 |
Provide tags and a correct Python 3 solution for this coding contest problem.
There is a long plate s containing n digits. Iahub wants to delete some digits (possibly none, but he is not allowed to delete all the digits) to form his "magic number" on the plate, a number that is divisible by 5. Note that, the resulting... | instruction | 0 | 4,518 | 20 | 9,036 |
Tags: combinatorics, math
Correct Solution:
```
mod = 1000000007
#gcd(a, m) = 1
def inv_mod(a, m):
a %= m
return pow(a, m-2, m)
a = input()
k = int(input())
t = len(a)
d = 0
for i, c in enumerate(a):
if not int(c) % 5:
d += pow(2, i, mod)
d %= mod
print(d*(pow(2, k*t, mod)-1)*inv_mod(pow(... | output | 1 | 4,518 | 20 | 9,037 |
Provide tags and a correct Python 3 solution for this coding contest problem.
There is a long plate s containing n digits. Iahub wants to delete some digits (possibly none, but he is not allowed to delete all the digits) to form his "magic number" on the plate, a number that is divisible by 5. Note that, the resulting... | instruction | 0 | 4,519 | 20 | 9,038 |
Tags: combinatorics, math
Correct Solution:
```
n=input()
k=int(input())
X=list(n)
index=[]
mo=1000000007
for i in range(len(X)):
if X[i]=="0" or X[i]=="5":
index.append(i)
ans=0
R=pow(2,len(X),mo)
for i in index:
ans=(ans+pow(2,i,mo))%mo
ans=(ans*(pow(R,k,mo)-1)*pow(R-1,mo-2,mo))%mo
print(ans)
``` | output | 1 | 4,519 | 20 | 9,039 |
Provide tags and a correct Python 3 solution for this coding contest problem.
There is a long plate s containing n digits. Iahub wants to delete some digits (possibly none, but he is not allowed to delete all the digits) to form his "magic number" on the plate, a number that is divisible by 5. Note that, the resulting... | instruction | 0 | 4,520 | 20 | 9,040 |
Tags: combinatorics, math
Correct Solution:
```
a,k = input(), int(input())
n,m = len(a), 10 ** 9 + 7
ans = 0
t = (pow(2, k * n, m) - 1) * pow(pow(2, n, m) - 1, m - 2, m) % m
for i in range(n - 1, -1, -1):
if int(a[i]) % 5 == 0:
ans = (ans + pow(2, i, m) * t) % m
print(ans)
``` | output | 1 | 4,520 | 20 | 9,041 |
Provide tags and a correct Python 3 solution for this coding contest problem.
There is a long plate s containing n digits. Iahub wants to delete some digits (possibly none, but he is not allowed to delete all the digits) to form his "magic number" on the plate, a number that is divisible by 5. Note that, the resulting... | instruction | 0 | 4,521 | 20 | 9,042 |
Tags: combinatorics, math
Correct Solution:
```
s=input()
k=int(input())
p=10**9+7
n=len(s)
amodp = (pow(2,k*n,p)-1)%p
b1modp = pow ( (2**n) -1 , p-2 , p )
MOD = (amodp*b1modp) % p
ans=0
for i in range(len(s)):
if(s[i]=='5' or s[i]=='0'):
ans+=pow(2,i,10**9+7)
Ans=0
Ans+= ans*( MOD )
Ans%=p
##for i in ... | output | 1 | 4,521 | 20 | 9,043 |
Provide tags and a correct Python 3 solution for this coding contest problem.
There is a long plate s containing n digits. Iahub wants to delete some digits (possibly none, but he is not allowed to delete all the digits) to form his "magic number" on the plate, a number that is divisible by 5. Note that, the resulting... | instruction | 0 | 4,522 | 20 | 9,044 |
Tags: combinatorics, math
Correct Solution:
```
mod = 1000000007
def egcd(a, b):
d = a
if b != 0:
d, y, x = egcd(b, a%b)
y -= (a // b) * x
return d, x, y
else:
return a, 1, 0
def inv(a, m):
d, x, y = egcd(a, m)
return (m+x%m)%m
a = input()
k = int(input())
t = len... | output | 1 | 4,522 | 20 | 9,045 |
Provide tags and a correct Python 3 solution for this coding contest problem.
There is a long plate s containing n digits. Iahub wants to delete some digits (possibly none, but he is not allowed to delete all the digits) to form his "magic number" on the plate, a number that is divisible by 5. Note that, the resulting... | instruction | 0 | 4,523 | 20 | 9,046 |
Tags: combinatorics, math
Correct Solution:
```
t, k = input(), int(input())
s, n, d = 0, 1, 1000000007
for i in t:
if i in '05': s += n
n = (n << 1) % d
p = (pow(n, k, d) - 1) * pow(n - 1, d - 2, d)
print(((p % d) * (s % d)) % d)
``` | output | 1 | 4,523 | 20 | 9,047 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
There is a long plate s containing n digits. Iahub wants to delete some digits (possibly none, but he is not allowed to delete all the digits) to form his "magic number" on the plate, a number t... | instruction | 0 | 4,524 | 20 | 9,048 |
Yes | output | 1 | 4,524 | 20 | 9,049 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
There is a long plate s containing n digits. Iahub wants to delete some digits (possibly none, but he is not allowed to delete all the digits) to form his "magic number" on the plate, a number t... | instruction | 0 | 4,525 | 20 | 9,050 |
Yes | output | 1 | 4,525 | 20 | 9,051 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
There is a long plate s containing n digits. Iahub wants to delete some digits (possibly none, but he is not allowed to delete all the digits) to form his "magic number" on the plate, a number t... | instruction | 0 | 4,526 | 20 | 9,052 |
Yes | output | 1 | 4,526 | 20 | 9,053 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
There is a long plate s containing n digits. Iahub wants to delete some digits (possibly none, but he is not allowed to delete all the digits) to form his "magic number" on the plate, a number t... | instruction | 0 | 4,527 | 20 | 9,054 |
Yes | output | 1 | 4,527 | 20 | 9,055 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
There is a long plate s containing n digits. Iahub wants to delete some digits (possibly none, but he is not allowed to delete all the digits) to form his "magic number" on the plate, a number t... | instruction | 0 | 4,528 | 20 | 9,056 |
No | output | 1 | 4,528 | 20 | 9,057 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
There is a long plate s containing n digits. Iahub wants to delete some digits (possibly none, but he is not allowed to delete all the digits) to form his "magic number" on the plate, a number t... | instruction | 0 | 4,529 | 20 | 9,058 |
No | output | 1 | 4,529 | 20 | 9,059 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
There is a long plate s containing n digits. Iahub wants to delete some digits (possibly none, but he is not allowed to delete all the digits) to form his "magic number" on the plate, a number t... | instruction | 0 | 4,530 | 20 | 9,060 |
No | output | 1 | 4,530 | 20 | 9,061 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
There is a long plate s containing n digits. Iahub wants to delete some digits (possibly none, but he is not allowed to delete all the digits) to form his "magic number" on the plate, a number t... | instruction | 0 | 4,531 | 20 | 9,062 |
No | output | 1 | 4,531 | 20 | 9,063 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Teacher thinks that we make a lot of progress. Now we are even allowed to use decimal notation instead of counting sticks. After the test the teacher promised to show us a "very beautiful number". But the problem is, he's left his paper with... | instruction | 0 | 4,533 | 20 | 9,066 |
Tags: math
Correct Solution:
```
p,k = input().split()
p = int (p)
k = int (k)
y = 10*k -1
x = ((10 ** (p-1)) - k) % y
b = True
for i in range(k,10):
if( (x*i % y) == 0):
#z = (x*i) // y
#print(z*10 + i)
z = i*10
while( (z-i)%y ):
z *= 10
part = str ((z-i)//y)
print(part * (p//len(part))... | output | 1 | 4,533 | 20 | 9,067 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Teacher thinks that we make a lot of progress. Now we are even allowed to use decimal notation instead of counting sticks. After the test the teacher promised to show us a "very beautiful number". But the problem is, he's left his paper with... | instruction | 0 | 4,534 | 20 | 9,068 |
Tags: math
Correct Solution:
```
p, k = map(int, input().split())
u = 10 * k - 1
v = pow(10, p - 1, u) - k
for y in range(k, 10):
if (y * v) % u == 0:
q = d = 9 * y
while q % u: q = 10 * q + d
q = str(q // u)
print(q * (p // len(q)))
break
else: print('Impossible')
# Made... | output | 1 | 4,534 | 20 | 9,069 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Teacher thinks that we make a lot of progress. Now we are even allowed to use decimal notation instead of counting sticks. After the test the teacher promised to show us a "very beautiful number". But the problem is, he's left his paper with... | instruction | 0 | 4,535 | 20 | 9,070 |
Tags: math
Correct Solution:
```
p, k = map(int, input().split())
u = 10 * k - 1
v = pow(10, p - 1, u) - k
for y in range(k, 10):
if (y * v) % u == 0:
q = d = 9 * y
while q % u: q = 10 * q + d
q = str(q // u)
print(q * (p // len(q)))
break
else: print('Impossible')
``` | output | 1 | 4,535 | 20 | 9,071 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Teacher thinks that we make a lot of progress. Now we are even allowed to use decimal notation instead of counting sticks. After the test the teacher promised to show us a "very beautiful number... | instruction | 0 | 4,536 | 20 | 9,072 |
No | output | 1 | 4,536 | 20 | 9,073 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Teacher thinks that we make a lot of progress. Now we are even allowed to use decimal notation instead of counting sticks. After the test the teacher promised to show us a "very beautiful number... | instruction | 0 | 4,537 | 20 | 9,074 |
No | output | 1 | 4,537 | 20 | 9,075 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Teacher thinks that we make a lot of progress. Now we are even allowed to use decimal notation instead of counting sticks. After the test the teacher promised to show us a "very beautiful number... | instruction | 0 | 4,538 | 20 | 9,076 |
No | output | 1 | 4,538 | 20 | 9,077 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Teacher thinks that we make a lot of progress. Now we are even allowed to use decimal notation instead of counting sticks. After the test the teacher promised to show us a "very beautiful number... | instruction | 0 | 4,539 | 20 | 9,078 |
No | output | 1 | 4,539 | 20 | 9,079 |
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.
One day Petya dreamt ... | instruction | 0 | 5,123 | 20 | 10,246 |
Tags: brute force, combinatorics, number theory
Correct Solution:
```
import math
def good(x):
while x > 0:
if x % 10 != 4 and x % 10 != 7:
return False
x //=10
return True
n, k = map(int, input().split())
l = 1
r = n
if n >= 15:
l = n-14
if n <= 15 and math.factorial(n) < k:
... | output | 1 | 5,123 | 20 | 10,247 |
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.
One day Petya dreamt ... | instruction | 0 | 5,124 | 20 | 10,248 |
Tags: brute force, combinatorics, number theory
Correct Solution:
```
def lucky(x):
s=str(x)
return s.count('4')+s.count('7')==len(s)
def Gen_lucky(n):
if(len(n)==1):
if(n<"4"):
return 0
if(n<"7"):
return 1
return 2
s=str(n)
if(s[0]<'4'):
retu... | output | 1 | 5,124 | 20 | 10,249 |
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 | 5,125 | 20 | 10,250 |
No | output | 1 | 5,125 | 20 | 10,251 |
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 | 5,126 | 20 | 10,252 |
No | output | 1 | 5,126 | 20 | 10,253 |
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 | 5,127 | 20 | 10,254 |
No | output | 1 | 5,127 | 20 | 10,255 |
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 | 5,128 | 20 | 10,256 |
No | output | 1 | 5,128 | 20 | 10,257 |
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