message stringlengths 2 23.8k | message_type stringclasses 2
values | message_id int64 0 1 | conversation_id int64 97 109k | cluster float64 0 0 | __index_level_0__ int64 194 217k |
|---|---|---|---|---|---|
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya has a string s of length n consisting only of digits 0 and 1. Also he has an array a of length n.
Vasya performs the following operation until the string becomes empty: choose some conse... | instruction | 0 | 2,500 | 0 | 5,000 |
No | output | 1 | 2,500 | 0 | 5,001 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya has a string s of length n consisting only of digits 0 and 1. Also he has an array a of length n.
Vasya performs the following operation until the string becomes empty: choose some conse... | instruction | 0 | 2,501 | 0 | 5,002 |
No | output | 1 | 2,501 | 0 | 5,003 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya has a string s of length n consisting only of digits 0 and 1. Also he has an array a of length n.
Vasya performs the following operation until the string becomes empty: choose some conse... | instruction | 0 | 2,502 | 0 | 5,004 |
No | output | 1 | 2,502 | 0 | 5,005 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Just in case somebody missed it: this winter is totally cold in Nvodsk! It is so cold that one gets funny thoughts. For example, let's say there are strings with the length exactly n, based on the alphabet of size m. Any its substring with l... | instruction | 0 | 2,670 | 0 | 5,340 |
Tags: combinatorics, dfs and similar, graphs, math
Correct Solution:
```
from os import path;import sys,time
mod = int(1e9 + 7)
from math import ceil, floor,gcd,log,log2 ,factorial,sqrt
from collections import defaultdict ,Counter , OrderedDict , deque;from itertools import combinations,permutations
from string import... | output | 1 | 2,670 | 0 | 5,341 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Just in case somebody missed it: this winter is totally cold in Nvodsk! It is so cold that one gets funny thoughts. For example, let's say there are strings with the length exactly n, based on the alphabet of size m. Any its substring with l... | instruction | 0 | 2,671 | 0 | 5,342 |
Tags: combinatorics, dfs and similar, graphs, math
Correct Solution:
```
import math
p = [i for i in range(2005)]
def find(x):
if p[x] != x:
p[x] = find(p[x])
return p[x]
def merge(x, y):
r1, r2 = find(x), find(y)
if r1 == r2:
return
p[r1] = r2
def pow(a,b,p):
res = 1
... | output | 1 | 2,671 | 0 | 5,343 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Just in case somebody missed it: this winter is totally cold in Nvodsk! It is so cold that one gets funny thoughts. For example, let's say there are strings with the length exactly n, based on the alphabet of size m. Any its substring with l... | instruction | 0 | 2,672 | 0 | 5,344 |
Tags: combinatorics, dfs and similar, graphs, math
Correct Solution:
```
n,m,k=map(int,input().split())
ans=1
if(k==1 or k>n):
for i in range(n):
ans*=m
ans=ans%1000000007
print(ans)
elif(n==k):
for i in range((n+1)//2):
ans*=m
ans=ans%1000000007
print(ans)
el... | output | 1 | 2,672 | 0 | 5,345 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Just in case somebody missed it: this winter is totally cold in Nvodsk! It is so cold that one gets funny thoughts. For example, let's say there are strings with the length exactly n, based on the alphabet of size m. Any its substring with l... | instruction | 0 | 2,673 | 0 | 5,346 |
Tags: combinatorics, dfs and similar, graphs, math
Correct Solution:
```
import sys
from math import *
from fractions import gcd
readints=lambda:map(int, input().strip('\n').split())
n,m,k=readints()
mod = 10**9 + 7
if k==1 or k>n:
# m^n
res = 1
for _ in range(n):
res *= m
res %= mod
p... | output | 1 | 2,673 | 0 | 5,347 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Just in case somebody missed it: this winter is totally cold in Nvodsk! It is so cold that one gets funny thoughts. For example, let's say there are strings with the length exactly n, based on the alphabet of size m. Any its substring with l... | instruction | 0 | 2,674 | 0 | 5,348 |
Tags: combinatorics, dfs and similar, graphs, math
Correct Solution:
```
n, m, k = map(int, input().split())
if k == 1 or k > n:
print(pow(m, n, 10**9 + 7))
elif k == n:
print(pow(m, (n+1)//2, 10**9 + 7))
else:
print(pow(m, k%2 + 1, 10**9 + 7))
``` | output | 1 | 2,674 | 0 | 5,349 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Just in case somebody missed it: this winter is totally cold in Nvodsk! It is so cold that one gets funny thoughts. For example, let's say there are strings with the length exactly n, based on the alphabet of size m. Any its substring with l... | instruction | 0 | 2,675 | 0 | 5,350 |
Tags: combinatorics, dfs and similar, graphs, math
Correct Solution:
```
n,m,k = map(int,input().split())
mod = 10**9 + 7
if k == 1 or k>n:
print(pow(m,n,mod))
elif k == n:
print(pow(m,(n+1)//2,mod))
elif k%2== 0:
print(m%mod)
else:
print(pow(m,2,mod))
``` | output | 1 | 2,675 | 0 | 5,351 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Just in case somebody missed it: this winter is totally cold in Nvodsk! It is so cold that one gets funny thoughts. For example, let's say there are strings with the length exactly n, based on the alphabet of size m. Any its substring with l... | instruction | 0 | 2,676 | 0 | 5,352 |
Tags: combinatorics, dfs and similar, graphs, math
Correct Solution:
```
n, m, k = map(int, input().split())
mod = 10 ** 9 + 7
if k == 1 or k > n:
print(pow(m, n, mod))
elif k == n:
print(pow(m, (n + 1) // 2, mod))
else:
print(pow(m, k % 2 + 1, mod))
# Made By Mostafa_Khaled
``` | output | 1 | 2,676 | 0 | 5,353 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Just in case somebody missed it: this winter is totally cold in Nvodsk! It is so cold that one gets funny thoughts. For example, let's say there are strings with the length exactly n, based on the alphabet of size m. Any its substring with l... | instruction | 0 | 2,677 | 0 | 5,354 |
Tags: combinatorics, dfs and similar, graphs, math
Correct Solution:
```
mod = 1000000007
n,m,k = map(int,input().split())
if k==1 or n<k:
print(pow(m,n,mod))
elif k==n:
print(pow(m,(n+1)//2,mod))
elif k%2!=0:
print((m*m)%mod)
else:
print(m)
``` | output | 1 | 2,677 | 0 | 5,355 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Just in case somebody missed it: this winter is totally cold in Nvodsk! It is so cold that one gets funny thoughts. For example, let's say there are strings with the length exactly n, based on t... | instruction | 0 | 2,678 | 0 | 5,356 |
Yes | output | 1 | 2,678 | 0 | 5,357 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Just in case somebody missed it: this winter is totally cold in Nvodsk! It is so cold that one gets funny thoughts. For example, let's say there are strings with the length exactly n, based on t... | instruction | 0 | 2,679 | 0 | 5,358 |
Yes | output | 1 | 2,679 | 0 | 5,359 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Just in case somebody missed it: this winter is totally cold in Nvodsk! It is so cold that one gets funny thoughts. For example, let's say there are strings with the length exactly n, based on t... | instruction | 0 | 2,680 | 0 | 5,360 |
Yes | output | 1 | 2,680 | 0 | 5,361 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Just in case somebody missed it: this winter is totally cold in Nvodsk! It is so cold that one gets funny thoughts. For example, let's say there are strings with the length exactly n, based on t... | instruction | 0 | 2,681 | 0 | 5,362 |
Yes | output | 1 | 2,681 | 0 | 5,363 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Just in case somebody missed it: this winter is totally cold in Nvodsk! It is so cold that one gets funny thoughts. For example, let's say there are strings with the length exactly n, based on t... | instruction | 0 | 2,682 | 0 | 5,364 |
No | output | 1 | 2,682 | 0 | 5,365 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Just in case somebody missed it: this winter is totally cold in Nvodsk! It is so cold that one gets funny thoughts. For example, let's say there are strings with the length exactly n, based on t... | instruction | 0 | 2,683 | 0 | 5,366 |
No | output | 1 | 2,683 | 0 | 5,367 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Just in case somebody missed it: this winter is totally cold in Nvodsk! It is so cold that one gets funny thoughts. For example, let's say there are strings with the length exactly n, based on t... | instruction | 0 | 2,684 | 0 | 5,368 |
No | output | 1 | 2,684 | 0 | 5,369 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Just in case somebody missed it: this winter is totally cold in Nvodsk! It is so cold that one gets funny thoughts. For example, let's say there are strings with the length exactly n, based on t... | instruction | 0 | 2,685 | 0 | 5,370 |
No | output | 1 | 2,685 | 0 | 5,371 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The bear has a string s = s1s2... s|s| (record |s| is the string's length), consisting of lowercase English letters. The bear wants to count the number of such pairs of indices i, j (1 ≤ i ≤ j ≤ |s|), that string x(i, j) = sisi + 1... sj con... | instruction | 0 | 2,795 | 0 | 5,590 |
Tags: brute force, greedy, implementation, math, strings
Correct Solution:
```
s = input()
n = len(s)
ans = 0
lb = -1
for i in range(n - 3):
if s[i:i + 4] == 'bear':
left = i-lb
right = n - 3 - i
ans += left * right
lb = i
print(ans)
``` | output | 1 | 2,795 | 0 | 5,591 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The bear has a string s = s1s2... s|s| (record |s| is the string's length), consisting of lowercase English letters. The bear wants to count the number of such pairs of indices i, j (1 ≤ i ≤ j ≤ |s|), that string x(i, j) = sisi + 1... sj con... | instruction | 0 | 2,796 | 0 | 5,592 |
Tags: brute force, greedy, implementation, math, strings
Correct Solution:
```
s=input()
ans=0
w='bear'
cnt=s.count(w)
for i in range(cnt):
ans+=(s.index(w)+1)*(len(s)-(s.index(w)+3))
s=s[s.index(w)+1:]
print(ans)
``` | output | 1 | 2,796 | 0 | 5,593 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The bear has a string s = s1s2... s|s| (record |s| is the string's length), consisting of lowercase English letters. The bear wants to count the number of such pairs of indices i, j (1 ≤ i ≤ j ≤ |s|), that string x(i, j) = sisi + 1... sj con... | instruction | 0 | 2,797 | 0 | 5,594 |
Tags: brute force, greedy, implementation, math, strings
Correct Solution:
```
#B. Bear and Strings
s = input()
ans = 0
for i in range(len(s)) :
part = s [i : ]
if 'bear' in part :
ans += len(part) - (part.index('bear') + 3 )
print(ans)
``` | output | 1 | 2,797 | 0 | 5,595 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The bear has a string s = s1s2... s|s| (record |s| is the string's length), consisting of lowercase English letters. The bear wants to count the number of such pairs of indices i, j (1 ≤ i ≤ j ≤ |s|), that string x(i, j) = sisi + 1... sj con... | instruction | 0 | 2,798 | 0 | 5,596 |
Tags: brute force, greedy, implementation, math, strings
Correct Solution:
```
def solution():
s = input()
l = s.split('bear')
if len(l) == 1:
return 0
ans = 0
sums = []
_sum = 0
for i in range(len(l)-1):
_sum += len(l[i])
if i>=1:
_sum +=4
sums.append(_sum)
for i in range(len(l)-1):
if i==0:
a... | output | 1 | 2,798 | 0 | 5,597 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The bear has a string s = s1s2... s|s| (record |s| is the string's length), consisting of lowercase English letters. The bear wants to count the number of such pairs of indices i, j (1 ≤ i ≤ j ≤ |s|), that string x(i, j) = sisi + 1... sj con... | instruction | 0 | 2,799 | 0 | 5,598 |
Tags: brute force, greedy, implementation, math, strings
Correct Solution:
```
z=list(map(str,input()))
x=['b','e','a','r']
a=0
ans=0
for i in range(len(z)-3):
a+=1
if z[i:i+4]==x:
ans+=(a*(len(z)-(i+4))+a)
a=0
print(ans)
``` | output | 1 | 2,799 | 0 | 5,599 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The bear has a string s = s1s2... s|s| (record |s| is the string's length), consisting of lowercase English letters. The bear wants to count the number of such pairs of indices i, j (1 ≤ i ≤ j ≤ |s|), that string x(i, j) = sisi + 1... sj con... | instruction | 0 | 2,800 | 0 | 5,600 |
Tags: brute force, greedy, implementation, math, strings
Correct Solution:
```
s,ans=input(),0
for i in range(len(s)):
f=s.find("bear",i)
if f!=-1:
ans+=len(s)-f-3
print(ans)
``` | output | 1 | 2,800 | 0 | 5,601 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The bear has a string s = s1s2... s|s| (record |s| is the string's length), consisting of lowercase English letters. The bear wants to count the number of such pairs of indices i, j (1 ≤ i ≤ j ≤ |s|), that string x(i, j) = sisi + 1... sj con... | instruction | 0 | 2,801 | 0 | 5,602 |
Tags: brute force, greedy, implementation, math, strings
Correct Solution:
```
from math import ceil
s=input();n=len(s);ans=0
last_idx=-1
for i in range(n-3):
if s[i:i+4]=='bear':
if i==0:ans+=(n-1)-(i+3)+1;last_idx=i
else:
k=i-last_idx-1
k1=(n-1)-(i+3)+1
ans+=k*k1
ans+=k1
last_idx=i
pr... | output | 1 | 2,801 | 0 | 5,603 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The bear has a string s = s1s2... s|s| (record |s| is the string's length), consisting of lowercase English letters. The bear wants to count the number of such pairs of indices i, j (1 ≤ i ≤ j ≤ |s|), that string x(i, j) = sisi + 1... sj con... | instruction | 0 | 2,802 | 0 | 5,604 |
Tags: brute force, greedy, implementation, math, strings
Correct Solution:
```
s=input()
if(len(s)<=3):
print(0)
else:
n=len(s)
ans=0
A=0
for i in range(3,n):
if(s[i-3]+s[i-2]+s[i-1]+s[i]=='bear'):
ans+=((i-3)-A+1)*(n-i)
A=i-2
print(ans)
``` | output | 1 | 2,802 | 0 | 5,605 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a string S of length n with each character being one of the first m lowercase English letters.
Calculate how many different strings T of length n composed from the first m lowercase English letters exist such that the length ... | instruction | 0 | 2,901 | 0 | 5,802 |
Tags: dp, greedy
Correct Solution:
```
n, m = map(int, input().split())
s = input()
p = c = 0
for i in range(1, n):
if s[i] == s[i - 1]:
c += n * (m - 1)
p = i
elif s[i] != s[i - 2]:
p = i - 1
c += i - p
ans = n * n * (m - 1) - c
print(ans)
``` | output | 1 | 2,901 | 0 | 5,803 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a string S of length n with each character being one of the first m lowercase English letters.
Calculate how many different strings T of length n composed from the first m lowercase English letters exist such that the length ... | instruction | 0 | 2,902 | 0 | 5,804 |
Tags: dp, greedy
Correct Solution:
```
def main():
n, m = map(int, input().split())
s = input()
k = sum(s[i] != s[i - 1] for i in range(1, n)) + 1
x = i = 0
while i < n - 1:
if s[i] != s[i + 1]:
j = i
while i + 2 < n and s[i] == s[i + 2]:
i += 1
... | output | 1 | 2,902 | 0 | 5,805 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a string S of length n with each character being one of the first m lowercase English letters.
Calculate how many different strings T of length n composed from the first m lowerc... | instruction | 0 | 2,903 | 0 | 5,806 |
No | output | 1 | 2,903 | 0 | 5,807 |
Provide tags and a correct Python 3 solution for this coding contest problem.
In the beginning of the new year Keivan decided to reverse his name. He doesn't like palindromes, so he changed Naviek to Navick.
He is too selfish, so for a given n he wants to obtain a string of n characters, each of which is either 'a', ... | instruction | 0 | 3,004 | 0 | 6,008 |
Tags: constructive algorithms
Correct Solution:
```
import sys
multistring = (2 * (10 ** 5)) // 4 + 1
s = "aabb" * multistring
n = int(input())
print(s[0:n])
``` | output | 1 | 3,004 | 0 | 6,009 |
Provide tags and a correct Python 3 solution for this coding contest problem.
In the beginning of the new year Keivan decided to reverse his name. He doesn't like palindromes, so he changed Naviek to Navick.
He is too selfish, so for a given n he wants to obtain a string of n characters, each of which is either 'a', ... | instruction | 0 | 3,005 | 0 | 6,010 |
Tags: constructive algorithms
Correct Solution:
```
l = int(input())
s = 'bbaa' *( (l+1)//2)
print (s[:l])
``` | output | 1 | 3,005 | 0 | 6,011 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You've got a string a_1, a_2, ..., a_n, consisting of zeros and ones.
Let's call a sequence of consecutive elements a_i, a_{i + 1}, …, a_j (1≤ i≤ j≤ n) a substring of string a.
You can apply the following operations any number of times:
... | instruction | 0 | 3,076 | 0 | 6,152 |
Tags: brute force, greedy, implementation, math
Correct Solution:
```
def main():
n, x, y = map(int, input().split())
s = input()
p = ''
t = []
for c in s:
if c != p:
t.append(c)
p = c
k = 0
for c in t:
if c == '0':
k += 1
if k == 0:
... | output | 1 | 3,076 | 0 | 6,153 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You've got a string a_1, a_2, ..., a_n, consisting of zeros and ones.
Let's call a sequence of consecutive elements a_i, a_{i + 1}, …, a_j (1≤ i≤ j≤ n) a substring of string a.
You can apply the following operations any number of times:
... | instruction | 0 | 3,077 | 0 | 6,154 |
Tags: brute force, greedy, implementation, math
Correct Solution:
```
def main():
n, x, y = map(int, input().split())
s, zo, a = input(), [0, 0], ' '
for b in s:
if a != b:
zo[b == '1'] += 1
a = b
z, o = zo
if s[0] == '1':
o -= 1
if s[-1] == '1':
o... | output | 1 | 3,077 | 0 | 6,155 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You've got a string a_1, a_2, ..., a_n, consisting of zeros and ones.
Let's call a sequence of consecutive elements a_i, a_{i + 1}, …, a_j (1≤ i≤ j≤ n) a substring of string a.
You can apply the following operations any number of times:
... | instruction | 0 | 3,078 | 0 | 6,156 |
Tags: brute force, greedy, implementation, math
Correct Solution:
```
n, x, y = list(map(int, input().split()))
s = ""
len_s = 0
a = input()
for i in range(n):
if len_s == 0:
s += a[i]
len_s += 1
elif a[i] != s[len_s - 1]:
s += a[i]
len_s += 1
sm = 0
if x < y:
if len(s) > 3:
... | output | 1 | 3,078 | 0 | 6,157 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You've got a string a_1, a_2, ..., a_n, consisting of zeros and ones.
Let's call a sequence of consecutive elements a_i, a_{i + 1}, …, a_j (1≤ i≤ j≤ n) a substring of string a.
You can apply the following operations any number of times:
... | instruction | 0 | 3,079 | 0 | 6,158 |
Tags: brute force, greedy, implementation, math
Correct Solution:
```
n, x, y = list(map(int,input().strip().split(' ')))
s = input()
groups = 0
if s[0] == '0':
groups += 1
for b in range(1,n):
if s[b] == '0' and s[b-1] == '1':
groups += 1
if groups == 0:
print(0)
else:
print((groups - 1) * min(... | output | 1 | 3,079 | 0 | 6,159 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You've got a string a_1, a_2, ..., a_n, consisting of zeros and ones.
Let's call a sequence of consecutive elements a_i, a_{i + 1}, …, a_j (1≤ i≤ j≤ n) a substring of string a.
You can apply the following operations any number of times:
... | instruction | 0 | 3,080 | 0 | 6,160 |
Tags: brute force, greedy, implementation, math
Correct Solution:
```
n,x,y = map(int,input().split())
s = input()
c=0
for i in range(0,len(s)-1):
if s[i]=='0' and s[i+1]=='1': c+=1
if(s[len(s)-1])=='0': c+=1
if c==0: print(0)
else: print((c-1)*min(x,y)+y)
``` | output | 1 | 3,080 | 0 | 6,161 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You've got a string a_1, a_2, ..., a_n, consisting of zeros and ones.
Let's call a sequence of consecutive elements a_i, a_{i + 1}, …, a_j (1≤ i≤ j≤ n) a substring of string a.
You can apply the following operations any number of times:
... | instruction | 0 | 3,081 | 0 | 6,162 |
Tags: brute force, greedy, implementation, math
Correct Solution:
```
n, x, y = map(int, input().split())
u = list(map(int, input()))
d0 = 0
k0 = 0
for i in range(n):
if k0 == 1 and u[i] == 1:
d0 += 1
k0 = 0
elif u[i] == 0:
k0 = 1
if k0 == 1:
d0 += 1
if d0 == 0:
p = 0
else:
p... | output | 1 | 3,081 | 0 | 6,163 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You've got a string a_1, a_2, ..., a_n, consisting of zeros and ones.
Let's call a sequence of consecutive elements a_i, a_{i + 1}, …, a_j (1≤ i≤ j≤ n) a substring of string a.
You can apply the following operations any number of times:
... | instruction | 0 | 3,082 | 0 | 6,164 |
Tags: brute force, greedy, implementation, math
Correct Solution:
```
n , x , y = map(int , input().split())
s = input()
c = 0
for i in range(len(s)-1):
if s[i] == '0' and s[i+1] == '1' :
c += 1
if s[len(s)-1] == '0' :
c += 1
if c == 0 :
print(0)
else :
print((c-1)*min(x , y) + y )
``` | output | 1 | 3,082 | 0 | 6,165 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You've got a string a_1, a_2, ..., a_n, consisting of zeros and ones.
Let's call a sequence of consecutive elements a_i, a_{i + 1}, …, a_j (1≤ i≤ j≤ n) a substring of string a.
You can apply the following operations any number of times:
... | instruction | 0 | 3,083 | 0 | 6,166 |
Tags: brute force, greedy, implementation, math
Correct Solution:
```
n, reverse, change = map(int, input().split())
a = input()
g = list(filter(lambda x: x, a.split('1')))
nGroups = len(g)
print(0 if not nGroups else min((nGroups - 1) * reverse + change, nGroups * change))
``` | output | 1 | 3,083 | 0 | 6,167 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You've got a string a_1, a_2, ..., a_n, consisting of zeros and ones.
Let's call a sequence of consecutive elements a_i, a_{i + 1}, …, a_j (1≤ i≤ j≤ n) a substring of string a.
You can apply ... | instruction | 0 | 3,084 | 0 | 6,168 |
Yes | output | 1 | 3,084 | 0 | 6,169 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You've got a string a_1, a_2, ..., a_n, consisting of zeros and ones.
Let's call a sequence of consecutive elements a_i, a_{i + 1}, …, a_j (1≤ i≤ j≤ n) a substring of string a.
You can apply ... | instruction | 0 | 3,085 | 0 | 6,170 |
Yes | output | 1 | 3,085 | 0 | 6,171 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You've got a string a_1, a_2, ..., a_n, consisting of zeros and ones.
Let's call a sequence of consecutive elements a_i, a_{i + 1}, …, a_j (1≤ i≤ j≤ n) a substring of string a.
You can apply ... | instruction | 0 | 3,086 | 0 | 6,172 |
Yes | output | 1 | 3,086 | 0 | 6,173 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You've got a string a_1, a_2, ..., a_n, consisting of zeros and ones.
Let's call a sequence of consecutive elements a_i, a_{i + 1}, …, a_j (1≤ i≤ j≤ n) a substring of string a.
You can apply ... | instruction | 0 | 3,087 | 0 | 6,174 |
Yes | output | 1 | 3,087 | 0 | 6,175 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You've got a string a_1, a_2, ..., a_n, consisting of zeros and ones.
Let's call a sequence of consecutive elements a_i, a_{i + 1}, …, a_j (1≤ i≤ j≤ n) a substring of string a.
You can apply ... | instruction | 0 | 3,088 | 0 | 6,176 |
No | output | 1 | 3,088 | 0 | 6,177 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You've got a string a_1, a_2, ..., a_n, consisting of zeros and ones.
Let's call a sequence of consecutive elements a_i, a_{i + 1}, …, a_j (1≤ i≤ j≤ n) a substring of string a.
You can apply ... | instruction | 0 | 3,089 | 0 | 6,178 |
No | output | 1 | 3,089 | 0 | 6,179 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You've got a string a_1, a_2, ..., a_n, consisting of zeros and ones.
Let's call a sequence of consecutive elements a_i, a_{i + 1}, …, a_j (1≤ i≤ j≤ n) a substring of string a.
You can apply ... | instruction | 0 | 3,090 | 0 | 6,180 |
No | output | 1 | 3,090 | 0 | 6,181 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You've got a string a_1, a_2, ..., a_n, consisting of zeros and ones.
Let's call a sequence of consecutive elements a_i, a_{i + 1}, …, a_j (1≤ i≤ j≤ n) a substring of string a.
You can apply ... | instruction | 0 | 3,091 | 0 | 6,182 |
No | output | 1 | 3,091 | 0 | 6,183 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given three integers a, b and x. Your task is to construct a binary string s of length n = a + b such that there are exactly a zeroes, exactly b ones and exactly x indices i (where 1 ≤ i < n) such that s_i ≠ s_{i + 1}. It is guarante... | instruction | 0 | 3,327 | 0 | 6,654 |
Tags: constructive algorithms
Correct Solution:
```
def binary_string(a, b, x):
s1 = '01'
s2 = '10'
if x % 2 == 0 and a > b:
return s1 * (x // 2) + '1' * (b - x // 2) + '0' * (a - x // 2)
elif x % 2 == 0 and a <= b:
return s2 * (x // 2) + '0' * (a - x // 2) + '1' * (b - x // 2)
elif ... | output | 1 | 3,327 | 0 | 6,655 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given three integers a, b and x. Your task is to construct a binary string s of length n = a + b such that there are exactly a zeroes, exactly b ones and exactly x indices i (where 1 ≤ i < n) such that s_i ≠ s_{i + 1}. It is guarante... | instruction | 0 | 3,328 | 0 | 6,656 |
Tags: constructive algorithms
Correct Solution:
```
a,b,x = map(int,input().split(' '))
if b>a:
if x%2!=0:
s = '10'*(x-x//2)
s = '1'*(b-(x//2)-1)+s+'0'*(a-(x//2)-1)
else:
s = '10'*((x-1)-(x-1)//2)
s = s+'0'*(a-(x//2))+'1'*(b-(x//2))
else:
if x%2!=0:
s = '01'*(x-... | output | 1 | 3,328 | 0 | 6,657 |
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