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 |
|---|---|---|---|---|---|
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a string s consisting of lowercase Latin letters. Let the length of s be |s|. You may perform several operations on this string.
In one operation, you can choose some index i and remove the i-th character of s (s_i) if at leas... | instruction | 0 | 10,075 | 0 | 20,150 |
Tags: brute force, constructive algorithms, greedy, strings
Correct Solution:
```
import sys
# from math
import bisect
import heapq
# from collections import deque
# from types import GeneratorType
# def bootstrap(func, stack=[]):
# def wrapped_function(*args, **kwargs):
# if stack:
# return fu... | output | 1 | 10,075 | 0 | 20,151 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a string s consisting of lowercase Latin letters. Let the length of s be |s|. You may perform several operations on this string.
In one operation, you can choose some index i and remove the i-th character of s (s_i) if at leas... | instruction | 0 | 10,076 | 0 | 20,152 |
Tags: brute force, constructive algorithms, greedy, strings
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... | output | 1 | 10,076 | 0 | 20,153 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a string s consisting of lowercase Latin letters. Let the length of s be |s|. You may perform several operations on this string.
In one operation, you can choose some index i and remove the i-th character of s (s_i) if at leas... | instruction | 0 | 10,077 | 0 | 20,154 |
Tags: brute force, constructive algorithms, greedy, strings
Correct Solution:
```
n = int(input())
s = [ord(i) for i in input()]
for mx in range(122, 96, -1):
i = 0
while i < len(s):
flag = 1
if s[i] == mx:
if i < len(s) - 1:
if s[i + 1] == s[i] - 1:
... | output | 1 | 10,077 | 0 | 20,155 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a string s consisting of lowercase Latin letters. Let the length of s be |s|. You may perform several operations on this string.
In one operation, you can choose some index i and remove the i-th character of s (s_i) if at leas... | instruction | 0 | 10,078 | 0 | 20,156 |
Tags: brute force, constructive algorithms, greedy, strings
Correct Solution:
```
import sys
#input = sys.stdin.readline
#for _ in range(int(input())):
n=int(input())
s=input()
temp=[]
for i in range(n):
temp.append(s[i])
s=temp
v=set()
for i in s:
v.add(i)
ans=0
for i in range(25,-1,-1):
curr=chr(i+ord('a'... | output | 1 | 10,078 | 0 | 20,157 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a string s consisting of lowercase Latin letters. Let the length of s be |s|. You may perform several operations on this string.
In one operation, you can choose some index i and remove the i-th character of s (s_i) if at leas... | instruction | 0 | 10,079 | 0 | 20,158 |
Tags: brute force, constructive algorithms, greedy, strings
Correct Solution:
```
n = int(input())
s = input()
res = 0
for _ in range(n):
max_char, max_index = 'A', -1
for i in range(len(s)):
is_ok = False
if i > 0 and (ord(s[i]) == ord(s[i-1])+1):
is_ok = True
if i < len(... | output | 1 | 10,079 | 0 | 20,159 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a string s consisting of lowercase Latin letters. Let the length of s be |s|. You may perform several operations on this string.
In one operation, you can choose some index i and remove the i-th character of s (s_i) if at leas... | instruction | 0 | 10,080 | 0 | 20,160 |
Tags: brute force, constructive algorithms, greedy, strings
Correct Solution:
```
n=int(input())
s=list(input())
for i in range(n):
s[i]=ord(s[i])-97
ch=[i for i in range(26,-1,-1)]
s=[-100]+s+[-100]
for i in ch:
j=1
while j<len(s)-1:
if s[j]==i:
if s[j]==s[j-1]+1 or s[j]==s[j+1]+1:
... | output | 1 | 10,080 | 0 | 20,161 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a string s consisting of lowercase Latin letters. Let the length of s be |s|. You may perform several operations on this string.
In one operation, you can choose some index i and remove the i-th character of s (s_i) if at leas... | instruction | 0 | 10,081 | 0 | 20,162 |
Tags: brute force, constructive algorithms, greedy, strings
Correct Solution:
```
n=int(input())
s=str(input())
s=list(s)
n=len(s)
count = [[] for i in range(26)]
for i in range(n):
count[ord(s[i])-ord('a')].append(i)
start = 25
total = 0
while True:
if start<=0:
break
if len(count[star... | output | 1 | 10,081 | 0 | 20,163 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a string s consisting of lowercase Latin letters. Let the length of s be |s|. You may perform several operations on this string.
In one operation, you can choose some index i and remove the i-th character of s (s_i) if at leas... | instruction | 0 | 10,082 | 0 | 20,164 |
Tags: brute force, constructive algorithms, greedy, strings
Correct Solution:
```
# -*- coding: utf-8 -*-
"""
Created on Tue Mar 3 19:29:45 2020
@author: hp
"""
n = int(input())
s = input()
count= 0
lst=[]
for i in s:
lst.append(ord(i))
for j in range(123,97,-1):
for k in range(n):
for i in range(len... | output | 1 | 10,082 | 0 | 20,165 |
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 consisting of lowercase Latin letters. Let the length of s be |s|. You may perform several operations on this string.
In one operation, you can choose some index i and ... | instruction | 0 | 10,083 | 0 | 20,166 |
Yes | output | 1 | 10,083 | 0 | 20,167 |
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 consisting of lowercase Latin letters. Let the length of s be |s|. You may perform several operations on this string.
In one operation, you can choose some index i and ... | instruction | 0 | 10,084 | 0 | 20,168 |
Yes | output | 1 | 10,084 | 0 | 20,169 |
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 consisting of lowercase Latin letters. Let the length of s be |s|. You may perform several operations on this string.
In one operation, you can choose some index i and ... | instruction | 0 | 10,085 | 0 | 20,170 |
Yes | output | 1 | 10,085 | 0 | 20,171 |
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 consisting of lowercase Latin letters. Let the length of s be |s|. You may perform several operations on this string.
In one operation, you can choose some index i and ... | instruction | 0 | 10,086 | 0 | 20,172 |
Yes | output | 1 | 10,086 | 0 | 20,173 |
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 consisting of lowercase Latin letters. Let the length of s be |s|. You may perform several operations on this string.
In one operation, you can choose some index i and ... | instruction | 0 | 10,087 | 0 | 20,174 |
No | output | 1 | 10,087 | 0 | 20,175 |
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 consisting of lowercase Latin letters. Let the length of s be |s|. You may perform several operations on this string.
In one operation, you can choose some index i and ... | instruction | 0 | 10,088 | 0 | 20,176 |
No | output | 1 | 10,088 | 0 | 20,177 |
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 consisting of lowercase Latin letters. Let the length of s be |s|. You may perform several operations on this string.
In one operation, you can choose some index i and ... | instruction | 0 | 10,089 | 0 | 20,178 |
No | output | 1 | 10,089 | 0 | 20,179 |
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 consisting of lowercase Latin letters. Let the length of s be |s|. You may perform several operations on this string.
In one operation, you can choose some index i and ... | instruction | 0 | 10,090 | 0 | 20,180 |
No | output | 1 | 10,090 | 0 | 20,181 |
Provide tags and a correct Python 3 solution for this coding contest problem.
This is the hard version of the problem. The difference between the versions is the constraint on n and the required number of operations. You can make hacks only if all versions of the problem are solved.
There are two binary strings a and... | instruction | 0 | 10,124 | 0 | 20,248 |
Tags: constructive algorithms, data structures, implementation, strings, two pointers
Correct Solution:
```
from sys import stdin
input=stdin.readline
def answer():
ans = []
i , j = 0 , n - 1
ind = n - 1
while(i <= j):
if(a[i] == b[ind]):
ans.append(1)
ans.append(in... | output | 1 | 10,124 | 0 | 20,249 |
Provide tags and a correct Python 3 solution for this coding contest problem.
This is the hard version of the problem. The difference between the versions is the constraint on n and the required number of operations. You can make hacks only if all versions of the problem are solved.
There are two binary strings a and... | instruction | 0 | 10,125 | 0 | 20,250 |
Tags: constructive algorithms, data structures, implementation, strings, two pointers
Correct Solution:
```
import sys,os,io
# input = io.BytesIO(os.read(0, os.fstat(0).st_size)).readline
input = sys.stdin.readline
for _ in range (int(input())):
n = int(input())
a = input().strip()
b = input().strip()
... | output | 1 | 10,125 | 0 | 20,251 |
Provide tags and a correct Python 3 solution for this coding contest problem.
This is the hard version of the problem. The difference between the versions is the constraint on n and the required number of operations. You can make hacks only if all versions of the problem are solved.
There are two binary strings a and... | instruction | 0 | 10,126 | 0 | 20,252 |
Tags: constructive algorithms, data structures, implementation, strings, two pointers
Correct Solution:
```
str1="First"
str2="Second"
def rev(c,cnt):
if(cnt%2==0):
return c
if(c=='0'):
c='1'
else:
c='0'
return c
def solve():
n=int(input())
a=input()
b=input()
ans=list()
l,r=0,n-1
for i in range(n)... | output | 1 | 10,126 | 0 | 20,253 |
Provide tags and a correct Python 3 solution for this coding contest problem.
This is the hard version of the problem. The difference between the versions is the constraint on n and the required number of operations. You can make hacks only if all versions of the problem are solved.
There are two binary strings a and... | instruction | 0 | 10,127 | 0 | 20,254 |
Tags: constructive algorithms, data structures, implementation, strings, two pointers
Correct Solution:
```
#------------------------------warmup----------------------------
# *******************************
# * AUTHOR: RAJDEEP GHOSH *
# * NICK : Rajdeep2k *
# * INSTITUTION: IIEST, SHIBPUR *
# **... | output | 1 | 10,127 | 0 | 20,255 |
Provide tags and a correct Python 3 solution for this coding contest problem.
This is the hard version of the problem. The difference between the versions is the constraint on n and the required number of operations. You can make hacks only if all versions of the problem are solved.
There are two binary strings a and... | instruction | 0 | 10,128 | 0 | 20,256 |
Tags: constructive algorithms, data structures, implementation, strings, two pointers
Correct Solution:
```
import math
import sys
#input=sys.stdin.readline
t=int(input())
#t=1
for _ in range(t):
n=int(input())
#n,m=map(int,input().split())
#l1=list(map(int,input().split()))
a=input()
a+='0'
b=i... | output | 1 | 10,128 | 0 | 20,257 |
Provide tags and a correct Python 3 solution for this coding contest problem.
This is the hard version of the problem. The difference between the versions is the constraint on n and the required number of operations. You can make hacks only if all versions of the problem are solved.
There are two binary strings a and... | instruction | 0 | 10,129 | 0 | 20,258 |
Tags: constructive algorithms, data structures, implementation, strings, two pointers
Correct Solution:
```
def f(c):
if c=='1':
return '0'
else:
return '1'
for _ in range(int(input())):
n=int(input())
a=list(input())
b=list(input())
l=[]
i=n-1
j=n-1
am=True
while... | output | 1 | 10,129 | 0 | 20,259 |
Provide tags and a correct Python 3 solution for this coding contest problem.
This is the hard version of the problem. The difference between the versions is the constraint on n and the required number of operations. You can make hacks only if all versions of the problem are solved.
There are two binary strings a and... | instruction | 0 | 10,130 | 0 | 20,260 |
Tags: constructive algorithms, data structures, implementation, strings, two pointers
Correct Solution:
```
import sys
t=int(input())
for _ in range(t):
n=int(input())
tempa=input()
tempb=input()
a=[]
for i in tempa:
a.append(int(i))
b=[]
for i in tempb:
b.append(int(i))
count=0
anslist=[]
start=1
rev=0... | output | 1 | 10,130 | 0 | 20,261 |
Provide tags and a correct Python 3 solution for this coding contest problem.
This is the hard version of the problem. The difference between the versions is the constraint on n and the required number of operations. You can make hacks only if all versions of the problem are solved.
There are two binary strings a and... | instruction | 0 | 10,131 | 0 | 20,262 |
Tags: constructive algorithms, data structures, implementation, strings, two pointers
Correct Solution:
```
# ---------------------------iye ha aam zindegi---------------------------------------------
import math
import heapq, bisect
import sys
from collections import deque, defaultdict
from fractions import Fraction
... | output | 1 | 10,131 | 0 | 20,263 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
This is the hard version of the problem. The difference between the versions is the constraint on n and the required number of operations. You can make hacks only if all versions of the problem ... | instruction | 0 | 10,132 | 0 | 20,264 |
Yes | output | 1 | 10,132 | 0 | 20,265 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
This is the hard version of the problem. The difference between the versions is the constraint on n and the required number of operations. You can make hacks only if all versions of the problem ... | instruction | 0 | 10,133 | 0 | 20,266 |
Yes | output | 1 | 10,133 | 0 | 20,267 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
This is the hard version of the problem. The difference between the versions is the constraint on n and the required number of operations. You can make hacks only if all versions of the problem ... | instruction | 0 | 10,134 | 0 | 20,268 |
Yes | output | 1 | 10,134 | 0 | 20,269 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
This is the hard version of the problem. The difference between the versions is the constraint on n and the required number of operations. You can make hacks only if all versions of the problem ... | instruction | 0 | 10,135 | 0 | 20,270 |
Yes | output | 1 | 10,135 | 0 | 20,271 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
This is the hard version of the problem. The difference between the versions is the constraint on n and the required number of operations. You can make hacks only if all versions of the problem ... | instruction | 0 | 10,136 | 0 | 20,272 |
No | output | 1 | 10,136 | 0 | 20,273 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
This is the hard version of the problem. The difference between the versions is the constraint on n and the required number of operations. You can make hacks only if all versions of the problem ... | instruction | 0 | 10,137 | 0 | 20,274 |
No | output | 1 | 10,137 | 0 | 20,275 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
This is the hard version of the problem. The difference between the versions is the constraint on n and the required number of operations. You can make hacks only if all versions of the problem ... | instruction | 0 | 10,138 | 0 | 20,276 |
No | output | 1 | 10,138 | 0 | 20,277 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
This is the hard version of the problem. The difference between the versions is the constraint on n and the required number of operations. You can make hacks only if all versions of the problem ... | instruction | 0 | 10,139 | 0 | 20,278 |
No | output | 1 | 10,139 | 0 | 20,279 |
Provide tags and a correct Python 3 solution for this coding contest problem.
We have a string of letters 'a' and 'b'. We want to perform some operations on it. On each step we choose one of substrings "ab" in the string and replace it with the string "bba". If we have no "ab" as a substring, our job is done. Print th... | instruction | 0 | 10,461 | 0 | 20,922 |
Tags: combinatorics, greedy, implementation, math
Correct Solution:
```
##############--->>>>> Deepcoder Amit Kumar Bhuyan <<<<<---##############
"""
Perfection is achieved not when there is nothing more to add, but rather when there is nothing more to take away.
"""
from __future__ import division, print_function
... | output | 1 | 10,461 | 0 | 20,923 |
Provide tags and a correct Python 3 solution for this coding contest problem.
We have a string of letters 'a' and 'b'. We want to perform some operations on it. On each step we choose one of substrings "ab" in the string and replace it with the string "bba". If we have no "ab" as a substring, our job is done. Print th... | instruction | 0 | 10,462 | 0 | 20,924 |
Tags: combinatorics, greedy, implementation, math
Correct Solution:
```
s = input()
cnt = 0
ans = 0
mod = 1000000007
for i in reversed(range(len(s))):
if(s[i] is 'a'):
ans = (ans + cnt) % mod
cnt = (cnt * 2) % mod
else:
cnt += 1
print(ans)
``` | output | 1 | 10,462 | 0 | 20,925 |
Provide tags and a correct Python 3 solution for this coding contest problem.
We have a string of letters 'a' and 'b'. We want to perform some operations on it. On each step we choose one of substrings "ab" in the string and replace it with the string "bba". If we have no "ab" as a substring, our job is done. Print th... | instruction | 0 | 10,463 | 0 | 20,926 |
Tags: combinatorics, greedy, implementation, math
Correct Solution:
```
s = input()
a, b = 0, 0
for i in reversed(s):
if i == 'b':
b += 1
else:
a += b
b *= 2
b %= 10**9 + 7
print(a % (10**9 + 7))
"""
from re import findall
s = input()
k = 0
p = findall('ab', s)
while p:
k +=... | output | 1 | 10,463 | 0 | 20,927 |
Provide tags and a correct Python 3 solution for this coding contest problem.
We have a string of letters 'a' and 'b'. We want to perform some operations on it. On each step we choose one of substrings "ab" in the string and replace it with the string "bba". If we have no "ab" as a substring, our job is done. Print th... | instruction | 0 | 10,464 | 0 | 20,928 |
Tags: combinatorics, greedy, implementation, math
Correct Solution:
```
l = input()
flaga, flagb = 0, 0
countbn, countan = 0, 0
count = 0
MOD = 10 ** 9 + 7
# a^n b^m
i = len(l)
vec = []
while i > 0:
i = i - 1
if l[i] == 'b':
countbn += 1
else:
count += countbn
countbn *= 2
co... | output | 1 | 10,464 | 0 | 20,929 |
Provide tags and a correct Python 3 solution for this coding contest problem.
We have a string of letters 'a' and 'b'. We want to perform some operations on it. On each step we choose one of substrings "ab" in the string and replace it with the string "bba". If we have no "ab" as a substring, our job is done. Print th... | instruction | 0 | 10,465 | 0 | 20,930 |
Tags: combinatorics, greedy, implementation, math
Correct Solution:
```
MOD = 10**9 + 7
s = input()
bcount, count = 0, 0
for c in reversed(s):
if c == 'b':
bcount += 1
else:
count = (count + bcount) % MOD
bcount = bcount * 2 % MOD
print(count)
``` | output | 1 | 10,465 | 0 | 20,931 |
Provide tags and a correct Python 3 solution for this coding contest problem.
We have a string of letters 'a' and 'b'. We want to perform some operations on it. On each step we choose one of substrings "ab" in the string and replace it with the string "bba". If we have no "ab" as a substring, our job is done. Print th... | instruction | 0 | 10,466 | 0 | 20,932 |
Tags: combinatorics, greedy, implementation, math
Correct Solution:
```
import math
import sys
mod = 1000000007
def main():
n = input()
tmp = 0
ans = 0
for i in range(len(n)-1,-1,-1):
if n[i] == 'a':
ans += tmp
ans %= mod
tmp *= 2
tmp %= mod
else:
tmp += 1
print(ans)
main()
``` | output | 1 | 10,466 | 0 | 20,933 |
Provide tags and a correct Python 3 solution for this coding contest problem.
We have a string of letters 'a' and 'b'. We want to perform some operations on it. On each step we choose one of substrings "ab" in the string and replace it with the string "bba". If we have no "ab" as a substring, our job is done. Print th... | instruction | 0 | 10,467 | 0 | 20,934 |
Tags: combinatorics, greedy, implementation, math
Correct Solution:
```
mod = 1000000007; b,ans = 0,0
for x in reversed(input()):
if x == 'a':
ans = (ans + b)%mod;
b = (2*b)%mod
else: b = (b+1%mod)
print(ans)
``` | output | 1 | 10,467 | 0 | 20,935 |
Provide tags and a correct Python 3 solution for this coding contest problem.
We have a string of letters 'a' and 'b'. We want to perform some operations on it. On each step we choose one of substrings "ab" in the string and replace it with the string "bba". If we have no "ab" as a substring, our job is done. Print th... | instruction | 0 | 10,468 | 0 | 20,936 |
Tags: combinatorics, greedy, implementation, math
Correct Solution:
```
s=input()
ans=0
j=0
cnt1=0
cnt2=0
for i in range(0,len(s)):
if i>=j:
while i<len(s) and s[i]=='a':
cnt1=cnt1+1
i=i+1
while i<len(s) and s[i]=='b':
cnt2=cnt2+1
i=i+1
j=i;
... | output | 1 | 10,468 | 0 | 20,937 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a string of letters 'a' and 'b'. We want to perform some operations on it. On each step we choose one of substrings "ab" in the string and replace it with the string "bba". If we have no... | instruction | 0 | 10,469 | 0 | 20,938 |
Yes | output | 1 | 10,469 | 0 | 20,939 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a string of letters 'a' and 'b'. We want to perform some operations on it. On each step we choose one of substrings "ab" in the string and replace it with the string "bba". If we have no... | instruction | 0 | 10,470 | 0 | 20,940 |
Yes | output | 1 | 10,470 | 0 | 20,941 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a string of letters 'a' and 'b'. We want to perform some operations on it. On each step we choose one of substrings "ab" in the string and replace it with the string "bba". If we have no... | instruction | 0 | 10,471 | 0 | 20,942 |
Yes | output | 1 | 10,471 | 0 | 20,943 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a string of letters 'a' and 'b'. We want to perform some operations on it. On each step we choose one of substrings "ab" in the string and replace it with the string "bba". If we have no... | instruction | 0 | 10,472 | 0 | 20,944 |
Yes | output | 1 | 10,472 | 0 | 20,945 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a string of letters 'a' and 'b'. We want to perform some operations on it. On each step we choose one of substrings "ab" in the string and replace it with the string "bba". If we have no... | instruction | 0 | 10,473 | 0 | 20,946 |
No | output | 1 | 10,473 | 0 | 20,947 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a string of letters 'a' and 'b'. We want to perform some operations on it. On each step we choose one of substrings "ab" in the string and replace it with the string "bba". If we have no... | instruction | 0 | 10,474 | 0 | 20,948 |
No | output | 1 | 10,474 | 0 | 20,949 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a string of letters 'a' and 'b'. We want to perform some operations on it. On each step we choose one of substrings "ab" in the string and replace it with the string "bba". If we have no... | instruction | 0 | 10,475 | 0 | 20,950 |
No | output | 1 | 10,475 | 0 | 20,951 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a string of letters 'a' and 'b'. We want to perform some operations on it. On each step we choose one of substrings "ab" in the string and replace it with the string "bba". If we have no... | instruction | 0 | 10,476 | 0 | 20,952 |
No | output | 1 | 10,476 | 0 | 20,953 |
Provide a correct Python 3 solution for this coding contest problem.
If the strings are consecutive, you can replace the characters with a rule to shorten the string. For example, for the string AAAA, the expression @ 4A will compress one character. Create a program that restores the character string compressed by thi... | instruction | 0 | 10,678 | 0 | 21,356 |
"Correct Solution:
```
while True:
try:
Tlist = list(input())
except:
break
while '@' in Tlist:
at = Tlist.index('@')
t = Tlist[at+2]
x = int(Tlist[at+1])
del(Tlist[at:at+3])
Tlist.insert(at,t*x)
print(''.join(Tlist))
``` | output | 1 | 10,678 | 0 | 21,357 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a string s of length n consisting only of lowercase Latin letters.
A substring of a string is a contiguous subsequence of that string. So, string "forces" is substring of string "codeforces", but string "coder" is not.
Your t... | instruction | 0 | 10,831 | 0 | 21,662 |
Tags: combinatorics, math, strings
Correct Solution:
```
import sys
from fractions import gcd
from itertools import groupby as gb
from itertools import permutations as perm
from collections import Counter as C
from collections import defaultdict as dd
sys.setrecursionlimit(10**5)
mod = 998244353
n = int(input())
s = i... | output | 1 | 10,831 | 0 | 21,663 |
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