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 two strings x and y, both consist only of lowercase Latin letters. Let |s| be the length of string s.
Let's call a sequence a a merging sequence if it consists of exactly |x| zeros and exactly |y| ones in some order.
A merge ... | instruction | 0 | 108,084 | 0 | 216,168 |
Tags: combinatorics, dp, math, strings
Correct Solution:
```
import sys
input=sys.stdin.buffer.readline
S=list(input())
T=list(input())
N=len(S)-2
M=len(T)-2
S.append(20)
mod=998244353
DP=[[[0]*8 for j in range(M+2)] for i in range(N+2)]
for i in range(N):
for j in range(M):
DP[i][j][0]=1
for i in range(N+1):
... | output | 1 | 108,084 | 0 | 216,169 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given two strings x and y, both consist only of lowercase Latin letters. Let |s| be the length of string s.
Let's call a sequence a a merging sequence if it consists of exactly |x| zeros and exactly |y| ones in some order.
A merge ... | instruction | 0 | 108,085 | 0 | 216,170 |
Tags: combinatorics, dp, math, strings
Correct Solution:
```
import sys
input = sys.stdin.readline
mod = 998244353
tot = 0
x = ' ' + input().strip()
y = ' ' + input().strip()
s = [x,y]
dp = [[[[0]*4 for j in range(2)] for k in range(len(y))] for i in range(len(x))]
for i in range(1,len(x)):
for j in range(1,len(y))... | output | 1 | 108,085 | 0 | 216,171 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given two strings x and y, both consist only of lowercase Latin letters. Let |s| be the length of string s.
Let's call a sequence a a merging sequence if it consists of exactly |x| zeros and exactly |y| ones in some order.
A merge ... | instruction | 0 | 108,086 | 0 | 216,172 |
Tags: combinatorics, dp, math, strings
Correct Solution:
```
import sys
from sys import stdin
x = stdin.readline()[:-1]
xl = len(x)
y = stdin.readline()[:-1]
yl = len(y)
x += "?"
y += "!"
mod = 998244353
dp = [[[0,0] for i in range(yl+1)] for j in range(xl+1)]
dp[-1][-1] = [1,0]
for a in range(-1,xl):
for b in... | output | 1 | 108,086 | 0 | 216,173 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given two strings x and y, both consist only of lowercase Latin letters. Let |s| be the length of string s.
Let's call a sequence a a merging sequence if it consists of exactly |x| zeros and exactly |y| ones in some order.
A merge ... | instruction | 0 | 108,087 | 0 | 216,174 |
Tags: combinatorics, dp, math, strings
Correct Solution:
```
import sys;input=sys.stdin.buffer.readline;S=list(input());T=list(input());N=len(S)-2;M=len(T)-2;S.append(20);mod=998244353;DP=[[[0]*8 for j in range(M+2)] for i in range(N+2)]
for i in range(N):
for j in range(M): DP[i][j][0]=1
for i in range(N+1)... | output | 1 | 108,087 | 0 | 216,175 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given two strings x and y, both consist only of lowercase Latin letters. Let |s| be the length of string s.
Let's call a sequence a a merging sequence if it consists of exactly |x| zeros and exactly |y| ones in some order.
A merge ... | instruction | 0 | 108,088 | 0 | 216,176 |
Tags: combinatorics, dp, math, strings
Correct Solution:
```
def popcount(x):
x = x - ((x >> 1) & 0x55555555)
x = (x & 0x33333333) + ((x >> 2) & 0x33333333)
x = (x + (x >> 4)) & 0x0f0f0f0f
x = x + (x >> 8)
x = x + (x >> 16)
return x & 0x0000007f
def eratosthenes(n):
res=[0 for i in range(n+... | output | 1 | 108,088 | 0 | 216,177 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given two strings x and y, both consist only of lowercase Latin letters. Let |s| be the length of string s.
Let's call a sequence a a merging sequence if it consists of exactly |x| zeros and exactly |y| ones in some order.
A merge ... | instruction | 0 | 108,089 | 0 | 216,178 |
Tags: combinatorics, dp, math, strings
Correct Solution:
```
mod = 998244353
eps = 10**-9
def main():
import sys
input = sys.stdin.readline
S = input().rstrip('\n')
T = input().rstrip('\n')
NS = len(S)
NT = len(T)
dp_S = [[0] * (NT+1) for _ in range(NS+1)]
dp_T = [[0] * (NT+1) for _ i... | output | 1 | 108,089 | 0 | 216,179 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given two strings x and y, both consist only of lowercase Latin letters. Let |s| be the length of string s.
Let's call a sequence a a merging sequence if it consists of exactly |x| zeros and exactly |y| ones in some order.
A merge ... | instruction | 0 | 108,090 | 0 | 216,180 |
Tags: combinatorics, dp, math, strings
Correct Solution:
```
from bisect import *
from collections import *
from math import gcd,ceil,sqrt,floor,inf
from heapq import *
from itertools import *
from operator import add,mul,sub,xor,truediv,floordiv
from functools import *
#----------------------------------------------... | output | 1 | 108,090 | 0 | 216,181 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given two strings x and y, both consist only of lowercase Latin letters. Let |s| be the length of string s.
Let's call a sequence a a merging sequence if it consists of exactly |x| zeros and exactly |y| ones in some order.
A merge ... | instruction | 0 | 108,091 | 0 | 216,182 |
Tags: combinatorics, dp, math, strings
Correct Solution:
```
# O(16*n^2)
import sys
input = sys.stdin.readline
mod = 998244353
tot = 0
x = ' ' + input().strip()
y = ' ' + input().strip()
s = [x,y]
# the idea is to go from the dp that finds number of chaotic merges of x and y
# given that the substrings merged must ... | output | 1 | 108,091 | 0 | 216,183 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given two strings x and y, both consist only of lowercase Latin letters. Let |s| be the length of string s.
Let's call a sequence a a merging sequence if it consists of exactly |x| zero... | instruction | 0 | 108,092 | 0 | 216,184 |
No | output | 1 | 108,092 | 0 | 216,185 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You've got string s, consisting of only lowercase English letters. Find its lexicographically maximum subsequence.
We'll call a non-empty string s[p1p2... pk] = sp1sp2... spk(1 ≤ p1 < p2 < ... < pk ≤ |s|) a subsequence of string s = s1s2...... | instruction | 0 | 108,130 | 0 | 216,260 |
Tags: greedy, strings
Correct Solution:
```
def lms(s):
t=""
if len(s)==1:
return s
else:
while(len(s)>1):
l=0
j=0
for i in range(len(s)):
if ord(s[i])>l:
l=ord(s[i])
j=i
t+= (s.count(s[j]... | output | 1 | 108,130 | 0 | 216,261 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You've got string s, consisting of only lowercase English letters. Find its lexicographically maximum subsequence.
We'll call a non-empty string s[p1p2... pk] = sp1sp2... spk(1 ≤ p1 < p2 < ... < pk ≤ |s|) a subsequence of string s = s1s2...... | instruction | 0 | 108,131 | 0 | 216,262 |
Tags: greedy, strings
Correct Solution:
```
a=m=''
for x in input()[::-1]:
if x>=m: a+=x
m=max(m,x)
print(a[::-1])
``` | output | 1 | 108,131 | 0 | 216,263 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You've got string s, consisting of only lowercase English letters. Find its lexicographically maximum subsequence.
We'll call a non-empty string s[p1p2... pk] = sp1sp2... spk(1 ≤ p1 < p2 < ... < pk ≤ |s|) a subsequence of string s = s1s2...... | instruction | 0 | 108,132 | 0 | 216,264 |
Tags: greedy, strings
Correct Solution:
```
from sys import stdin, stdout
s = stdin.readline().strip()
maximum = []
mx = 'a'
for f in s[::-1]:
mx = max(f, mx)
maximum.append(mx)
maximum = maximum[::-1]
ans = ''
for i in range(len(s)):
if s[i] == maximum[i]:
ans += s[i]
stdout.write(str(... | output | 1 | 108,132 | 0 | 216,265 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You've got string s, consisting of only lowercase English letters. Find its lexicographically maximum subsequence.
We'll call a non-empty string s[p1p2... pk] = sp1sp2... spk(1 ≤ p1 < p2 < ... < pk ≤ |s|) a subsequence of string s = s1s2...... | instruction | 0 | 108,133 | 0 | 216,266 |
Tags: greedy, strings
Correct Solution:
```
A = input()
letter_to_index = {}
for i, letter in enumerate(A):
if letter in letter_to_index:
letter_to_index[letter] += [i]
else:
letter_to_index[letter] = [i]
pos = 0
letter = 'z'
result = ""
while True:
if letter in letter_to_index:
... | output | 1 | 108,133 | 0 | 216,267 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You've got string s, consisting of only lowercase English letters. Find its lexicographically maximum subsequence.
We'll call a non-empty string s[p1p2... pk] = sp1sp2... spk(1 ≤ p1 < p2 < ... < pk ≤ |s|) a subsequence of string s = s1s2...... | instruction | 0 | 108,134 | 0 | 216,268 |
Tags: greedy, strings
Correct Solution:
```
s = input()
l = len(s)
m = 'a'
ans = ""
for i in range(l):
if s[l-i-1] >= m:
ans = s[l-i-1] + ans
m = s[l-i-1]
print(ans)
# Made By Mostafa_Khaled
``` | output | 1 | 108,134 | 0 | 216,269 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You've got string s, consisting of only lowercase English letters. Find its lexicographically maximum subsequence.
We'll call a non-empty string s[p1p2... pk] = sp1sp2... spk(1 ≤ p1 < p2 < ... < pk ≤ |s|) a subsequence of string s = s1s2...... | instruction | 0 | 108,135 | 0 | 216,270 |
Tags: greedy, strings
Correct Solution:
```
s,l=input(),['']
for i in reversed(s):
if l[-1]<=i: l.append(i)
print(*reversed(l),sep='')
``` | output | 1 | 108,135 | 0 | 216,271 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You've got string s, consisting of only lowercase English letters. Find its lexicographically maximum subsequence.
We'll call a non-empty string s[p1p2... pk] = sp1sp2... spk(1 ≤ p1 < p2 < ... < pk ≤ |s|) a subsequence of string s = s1s2...... | instruction | 0 | 108,136 | 0 | 216,272 |
Tags: greedy, strings
Correct Solution:
```
string = str(input())
listx = [x for x in string]
listx.reverse()
join = [''.join(listx)]
letts = list(set(listx))
letts.sort()
letts.reverse()
stringx = ''
for i in letts:
if i in string:
for k in range(len(string)):
if string[k] == i:
... | output | 1 | 108,136 | 0 | 216,273 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You've got string s, consisting of only lowercase English letters. Find its lexicographically maximum subsequence.
We'll call a non-empty string s[p1p2... pk] = sp1sp2... spk(1 ≤ p1 < p2 < ... < pk ≤ |s|) a subsequence of string s = s1s2...... | instruction | 0 | 108,137 | 0 | 216,274 |
Tags: greedy, strings
Correct Solution:
```
from collections import Counter
s = input()
c = Counter(s)
cur_char = 'z'
for ch in s:
while c[cur_char] == 0:
cur_char = chr(ord(cur_char) - 1)
if ch == cur_char:
print(cur_char, end='')
c[ch] -= 1
``` | output | 1 | 108,137 | 0 | 216,275 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You've got string s, consisting of only lowercase English letters. Find its lexicographically maximum subsequence.
We'll call a non-empty string s[p1p2... pk] = sp1sp2... spk(1 ≤ p1 < p2 < ... ... | instruction | 0 | 108,138 | 0 | 216,276 |
No | output | 1 | 108,138 | 0 | 216,277 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You've got string s, consisting of only lowercase English letters. Find its lexicographically maximum subsequence.
We'll call a non-empty string s[p1p2... pk] = sp1sp2... spk(1 ≤ p1 < p2 < ... ... | instruction | 0 | 108,139 | 0 | 216,278 |
No | output | 1 | 108,139 | 0 | 216,279 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You've got string s, consisting of only lowercase English letters. Find its lexicographically maximum subsequence.
We'll call a non-empty string s[p1p2... pk] = sp1sp2... spk(1 ≤ p1 < p2 < ... ... | instruction | 0 | 108,140 | 0 | 216,280 |
No | output | 1 | 108,140 | 0 | 216,281 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You've got string s, consisting of only lowercase English letters. Find its lexicographically maximum subsequence.
We'll call a non-empty string s[p1p2... pk] = sp1sp2... spk(1 ≤ p1 < p2 < ... ... | instruction | 0 | 108,141 | 0 | 216,282 |
No | output | 1 | 108,141 | 0 | 216,283 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Smart Beaver recently got interested in a new word game. The point is as follows: count the number of distinct good substrings of some string s. To determine if a string is good or not the game uses rules. Overall there are n rules. Each rul... | instruction | 0 | 108,158 | 0 | 216,316 |
Tags: hashing, strings
Correct Solution:
```
from sys import stdin
import re
def substrings(s):
for i in range(0, len(s)):
for l in range(i, len(s)):
yield s[i:l+1]
test = stdin.readline().rstrip('\n')
ruleCount = int(stdin.readline())
rules = []
for i in range(0, ruleCount):
ruleStr = ... | output | 1 | 108,158 | 0 | 216,317 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Smart Beaver recently got interested in a new word game. The point is as follows: count the number of distinct good substrings of some string s. To determine if a string is good or not the game uses rules. Overall there are n rules. Each rul... | instruction | 0 | 108,159 | 0 | 216,318 |
Tags: hashing, strings
Correct Solution:
```
def count(p, s):
start = 0
c = 0
while True:
try:
pos = s.index(p, start)
c += 1
start = pos + 1
except ValueError:
return c
s = input()
n = int(input())
pravs = []
for i in range(n):
p, l, r ... | output | 1 | 108,159 | 0 | 216,319 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Smart Beaver recently got interested in a new word game. The point is as follows: count the number of distinct good substrings of some string s. To determine if a string is good or not the game ... | instruction | 0 | 108,160 | 0 | 216,320 |
No | output | 1 | 108,160 | 0 | 216,321 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Smart Beaver recently got interested in a new word game. The point is as follows: count the number of distinct good substrings of some string s. To determine if a string is good or not the game ... | instruction | 0 | 108,161 | 0 | 216,322 |
No | output | 1 | 108,161 | 0 | 216,323 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Smart Beaver recently got interested in a new word game. The point is as follows: count the number of distinct good substrings of some string s. To determine if a string is good or not the game ... | instruction | 0 | 108,162 | 0 | 216,324 |
No | output | 1 | 108,162 | 0 | 216,325 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Smart Beaver recently got interested in a new word game. The point is as follows: count the number of distinct good substrings of some string s. To determine if a string is good or not the game ... | instruction | 0 | 108,163 | 0 | 216,326 |
No | output | 1 | 108,163 | 0 | 216,327 |
Provide tags and a correct Python 3 solution for this coding contest problem.
A wise man told Kerem "Different is good" once, so Kerem wants all things in his life to be different.
Kerem recently got a string s consisting of lowercase English letters. Since Kerem likes it when things are different, he wants all subs... | instruction | 0 | 108,271 | 0 | 216,542 |
Tags: constructive algorithms, implementation, strings
Correct Solution:
```
n = int(input())
s = input()
if n > 26:
print(-1)
else:
az = [0 for i in range(26)]
cnt = 0
for i in s:
ind = ord(i)-97
az[ind] += 1
if az[ind] > 1:
cnt += 1
print(cnt)
``` | output | 1 | 108,271 | 0 | 216,543 |
Provide tags and a correct Python 3 solution for this coding contest problem.
A wise man told Kerem "Different is good" once, so Kerem wants all things in his life to be different.
Kerem recently got a string s consisting of lowercase English letters. Since Kerem likes it when things are different, he wants all subs... | instruction | 0 | 108,272 | 0 | 216,544 |
Tags: constructive algorithms, implementation, strings
Correct Solution:
```
def different_is_good(mystr):
if len(mystr) > 26:
print(-1)
return
hash_, diff = [0] * 128, 0
for char in mystr:
if hash_[ord(char)] == 1:
diff += 1
else:
hash_[ord(cha... | output | 1 | 108,272 | 0 | 216,545 |
Provide tags and a correct Python 3 solution for this coding contest problem.
A wise man told Kerem "Different is good" once, so Kerem wants all things in his life to be different.
Kerem recently got a string s consisting of lowercase English letters. Since Kerem likes it when things are different, he wants all subs... | instruction | 0 | 108,273 | 0 | 216,546 |
Tags: constructive algorithms, implementation, strings
Correct Solution:
```
n=int(input())
string=input()
if(n>26):
print(-1)
else:
char_dict={}
for i in string:
if i in char_dict.keys():
char_dict[i]=char_dict[i]+1
else:
char_dict[i]=1
characters_to_change=0
... | output | 1 | 108,273 | 0 | 216,547 |
Provide tags and a correct Python 3 solution for this coding contest problem.
A wise man told Kerem "Different is good" once, so Kerem wants all things in his life to be different.
Kerem recently got a string s consisting of lowercase English letters. Since Kerem likes it when things are different, he wants all subs... | instruction | 0 | 108,274 | 0 | 216,548 |
Tags: constructive algorithms, implementation, strings
Correct Solution:
```
n = int(input())
s = input()
if n == 1:
print(0)
exit(0)
visited = set()
visited.add(s[0])
ans = 0
d = {}
d[s[0]] = 1
for i in range(1, n):
if s[i] in visited:
d[s[i]] += 1
else:
visited.add(s[i])
d[s[i]... | output | 1 | 108,274 | 0 | 216,549 |
Provide tags and a correct Python 3 solution for this coding contest problem.
A wise man told Kerem "Different is good" once, so Kerem wants all things in his life to be different.
Kerem recently got a string s consisting of lowercase English letters. Since Kerem likes it when things are different, he wants all subs... | instruction | 0 | 108,275 | 0 | 216,550 |
Tags: constructive algorithms, implementation, strings
Correct Solution:
```
def check(s1):
if len(s1)==len(set(s1)):
return False
else:
return True
n=int(input())
s=input()
s1=list(s)
res=[]
c=0
if(n>26):
print(-1)
elif(check(s1)==True):
for i in s1:
if i not in res:
res.append(i)
else:
c+=1
print(c... | output | 1 | 108,275 | 0 | 216,551 |
Provide tags and a correct Python 3 solution for this coding contest problem.
A wise man told Kerem "Different is good" once, so Kerem wants all things in his life to be different.
Kerem recently got a string s consisting of lowercase English letters. Since Kerem likes it when things are different, he wants all subs... | instruction | 0 | 108,276 | 0 | 216,552 |
Tags: constructive algorithms, implementation, strings
Correct Solution:
```
n=int(input())
k=len(set(input()))
if n<=26:
print(n-k)
else: print(-1)
``` | output | 1 | 108,276 | 0 | 216,553 |
Provide tags and a correct Python 3 solution for this coding contest problem.
A wise man told Kerem "Different is good" once, so Kerem wants all things in his life to be different.
Kerem recently got a string s consisting of lowercase English letters. Since Kerem likes it when things are different, he wants all subs... | instruction | 0 | 108,277 | 0 | 216,554 |
Tags: constructive algorithms, implementation, strings
Correct Solution:
```
n = int(input())
word = input()
newWord = ""
LETTERS = "abcdefghijklmnopqrstuvwxyz"
usedChars = {}
moves = 0
if n > 26:
print("-1")
else:
for c in word:
if c not in usedChars:
usedChars[c] = 0
for c in w... | output | 1 | 108,277 | 0 | 216,555 |
Provide tags and a correct Python 3 solution for this coding contest problem.
A wise man told Kerem "Different is good" once, so Kerem wants all things in his life to be different.
Kerem recently got a string s consisting of lowercase English letters. Since Kerem likes it when things are different, he wants all subs... | instruction | 0 | 108,278 | 0 | 216,556 |
Tags: constructive algorithms, implementation, strings
Correct Solution:
```
from collections import Counter
n = int(input().strip())
s = input().strip()
def solve(s):
freq = Counter(s)
l = len(freq.keys())
c = 0
for i in freq.values():
if i > 1:
l += i-1
c += i-1
if l > 26:
return -1
return c
print(s... | output | 1 | 108,278 | 0 | 216,557 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A wise man told Kerem "Different is good" once, so Kerem wants all things in his life to be different.
Kerem recently got a string s consisting of lowercase English letters. Since Kerem likes ... | instruction | 0 | 108,279 | 0 | 216,558 |
Yes | output | 1 | 108,279 | 0 | 216,559 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A wise man told Kerem "Different is good" once, so Kerem wants all things in his life to be different.
Kerem recently got a string s consisting of lowercase English letters. Since Kerem likes ... | instruction | 0 | 108,280 | 0 | 216,560 |
Yes | output | 1 | 108,280 | 0 | 216,561 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A wise man told Kerem "Different is good" once, so Kerem wants all things in his life to be different.
Kerem recently got a string s consisting of lowercase English letters. Since Kerem likes ... | instruction | 0 | 108,281 | 0 | 216,562 |
Yes | output | 1 | 108,281 | 0 | 216,563 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A wise man told Kerem "Different is good" once, so Kerem wants all things in his life to be different.
Kerem recently got a string s consisting of lowercase English letters. Since Kerem likes ... | instruction | 0 | 108,282 | 0 | 216,564 |
Yes | output | 1 | 108,282 | 0 | 216,565 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A wise man told Kerem "Different is good" once, so Kerem wants all things in his life to be different.
Kerem recently got a string s consisting of lowercase English letters. Since Kerem likes ... | instruction | 0 | 108,283 | 0 | 216,566 |
No | output | 1 | 108,283 | 0 | 216,567 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A wise man told Kerem "Different is good" once, so Kerem wants all things in his life to be different.
Kerem recently got a string s consisting of lowercase English letters. Since Kerem likes ... | instruction | 0 | 108,284 | 0 | 216,568 |
No | output | 1 | 108,284 | 0 | 216,569 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A wise man told Kerem "Different is good" once, so Kerem wants all things in his life to be different.
Kerem recently got a string s consisting of lowercase English letters. Since Kerem likes ... | instruction | 0 | 108,285 | 0 | 216,570 |
No | output | 1 | 108,285 | 0 | 216,571 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A wise man told Kerem "Different is good" once, so Kerem wants all things in his life to be different.
Kerem recently got a string s consisting of lowercase English letters. Since Kerem likes ... | instruction | 0 | 108,286 | 0 | 216,572 |
No | output | 1 | 108,286 | 0 | 216,573 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Vasya wrote down two strings s of length n and t of length m consisting of small English letters 'a' and 'b'. What is more, he knows that string t has a form "abab...", namely there are letters 'a' on odd positions and letters 'b' on even po... | instruction | 0 | 108,361 | 0 | 216,722 |
Tags: data structures, dp, strings
Correct Solution:
```
n = int(input()); s = input(); m = int(input())
a = [0]*(n+2); b = [0]*(n+2); q = [0]*(n+1);
dp = [(0, 0)]*(n+2)
for i in range(0, n):
b[i] = b[i-2]+(s[i] == 'b')
a[i] = a[i-2]+(s[i] == 'a')
q[i] = q[i-1]+(s[i] == '?')
for i in range(n-1, -1, -1):
if i+... | output | 1 | 108,361 | 0 | 216,723 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Vasya wrote down two strings s of length n and t of length m consisting of small English letters 'a' and 'b'. What is more, he knows that string t has a form "abab...", namely there are letters 'a' on odd positions and letters 'b' on even po... | instruction | 0 | 108,362 | 0 | 216,724 |
Tags: data structures, dp, strings
Correct Solution:
```
n = int(input()); s = input(); m = int(input())
a = [0]*(n+2); b = [0]*(n+2); q = [0]*(n+1);
dp = [(0, 0)]*(n+2)
for i in range(0, n):
b[i] = b[i-2]+(s[i] == 'b')
a[i] = a[i-2]+(s[i] == 'a')
q[i] = q[i-1]+(s[i] == '?')
for i in range(n-m, -1, -1):
dp[... | output | 1 | 108,362 | 0 | 216,725 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Vasya wrote down two strings s of length n and t of length m consisting of small English letters 'a' and 'b'. What is more, he knows that string t has a form "abab...", namely there are letters 'a' on odd positions and letters 'b' on even po... | instruction | 0 | 108,363 | 0 | 216,726 |
Tags: data structures, dp, strings
Correct Solution:
```
match = 0; nonmatch = 0; count = 0
def calc_match(s, t, p):
global match
global nonmatch
global count
if p == len(s)-len(t):
return
if p+len(t) < len(s):
if s[p+len(t)] == '?':
count -= 1
elif s[p+len(t)] == t[-1]:
match -= 1
... | output | 1 | 108,363 | 0 | 216,727 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Vasya wrote down two strings s of length n and t of length m consisting of small English letters 'a' and 'b'. What is more, he knows that string t has a form "abab...", namely there are letters 'a' on odd positions and letters 'b' on even po... | instruction | 0 | 108,364 | 0 | 216,728 |
Tags: data structures, dp, strings
Correct Solution:
```
match = 0
nonmatch = 0
count = 0
def calc_match(s, t, p):
global match
global nonmatch
global count
if p == len(s)-len(t):
return
if p+len(t) < len(s):
if s[p+len(t)] == '?':
count -= 1
elif s[p+len(t)] == t[-1]:
match -= 1
... | output | 1 | 108,364 | 0 | 216,729 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya wrote down two strings s of length n and t of length m consisting of small English letters 'a' and 'b'. What is more, he knows that string t has a form "abab...", namely there are letters ... | instruction | 0 | 108,365 | 0 | 216,730 |
No | output | 1 | 108,365 | 0 | 216,731 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya wrote down two strings s of length n and t of length m consisting of small English letters 'a' and 'b'. What is more, he knows that string t has a form "abab...", namely there are letters ... | instruction | 0 | 108,366 | 0 | 216,732 |
No | output | 1 | 108,366 | 0 | 216,733 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya wrote down two strings s of length n and t of length m consisting of small English letters 'a' and 'b'. What is more, he knows that string t has a form "abab...", namely there are letters ... | instruction | 0 | 108,367 | 0 | 216,734 |
No | output | 1 | 108,367 | 0 | 216,735 |
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