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.
You are given a string s of length n consisting of lowercase English letters.
For two given strings s and t, say S is the set of distinct characters of s and T is the set of distinct characters... | instruction | 0 | 83,138 | 0 | 166,276 |
No | output | 1 | 83,138 | 0 | 166,277 |
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 consisting of lowercase English letters.
For two given strings s and t, say S is the set of distinct characters of s and T is the set of distinct characters... | instruction | 0 | 83,139 | 0 | 166,278 |
No | output | 1 | 83,139 | 0 | 166,279 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The subsequence is a sequence that can be derived from another sequence by deleting some elements without changing the order of the remaining elements.
You are given an integer n.
You have to find a sequence s consisting of digits \{1, 3,... | instruction | 0 | 83,456 | 0 | 166,912 |
Tags: combinatorics, constructive algorithms, math, strings
Correct Solution:
```
for _ in range(int(input())):
n = int(input())
t1 = 0
while (t1 * (t1 + 1)) // 2 <= n:
t1 += 1
n -= (t1 * (t1 - 1)) // 2
print('133' + '7' * n + (t1 - 2) * '3' + '7')
``` | output | 1 | 83,456 | 0 | 166,913 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The subsequence is a sequence that can be derived from another sequence by deleting some elements without changing the order of the remaining elements.
You are given an integer n.
You have to find a sequence s consisting of digits \{1, 3,... | instruction | 0 | 83,457 | 0 | 166,914 |
Tags: combinatorics, constructive algorithms, math, strings
Correct Solution:
```
import bisect
ans=[-1]
n=0
while ans[-1]<=1000000000:
ans.append(n*(n+1)//2 )
#print(ans[-1])
n+=1
ans.pop(0)
#print(ans[:10])
for _ in range(int(input())):
n=int(input())
s="1"
lol=bisect.bisect(ans,n)
s+="3"*... | output | 1 | 83,457 | 0 | 166,915 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The subsequence is a sequence that can be derived from another sequence by deleting some elements without changing the order of the remaining elements.
You are given an integer n.
You have to find a sequence s consisting of digits \{1, 3,... | instruction | 0 | 83,458 | 0 | 166,916 |
Tags: combinatorics, constructive algorithms, math, strings
Correct Solution:
```
from bisect import bisect
tri = []
i = 1
while (i*(i+1))//2 <= 10**9:
tri.append((i*(i+1))//2)
i += 1
q = int(input())
for _ in range(q):
n = int(input())
a = []
i = bisect(tri, n)
while tri[i-1] < n:
a.append(i+1)
n -= tri[i-1... | output | 1 | 83,458 | 0 | 166,917 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The subsequence is a sequence that can be derived from another sequence by deleting some elements without changing the order of the remaining elements.
You are given an integer n.
You have to find a sequence s consisting of digits \{1, 3,... | instruction | 0 | 83,459 | 0 | 166,918 |
Tags: combinatorics, constructive algorithms, math, strings
Correct Solution:
```
from math import floor
t=int(input())
for i2 in range(t):
n=int(input())
if n<20:
print("133"+"7"*n)
continue
x=floor((n*2)**(1/2))-1
ma,ans=x,[0]*100000
n-=x*(x-1)//2
while n>5:
x=floor((n*... | output | 1 | 83,459 | 0 | 166,919 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The subsequence is a sequence that can be derived from another sequence by deleting some elements without changing the order of the remaining elements.
You are given an integer n.
You have to find a sequence s consisting of digits \{1, 3,... | instruction | 0 | 83,460 | 0 | 166,920 |
Tags: combinatorics, constructive algorithms, math, strings
Correct Solution:
```
# ------------------- fast io --------------------
import os
import sys
from io import BytesIO, IOBase
BUFSIZE = 8192
class FastIO(IOBase):
newlines = 0
def __init__(self, file):
self._fd = file.fileno()
self.b... | output | 1 | 83,460 | 0 | 166,921 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The subsequence is a sequence that can be derived from another sequence by deleting some elements without changing the order of the remaining elements.
You are given an integer n.
You have to find a sequence s consisting of digits \{1, 3,... | instruction | 0 | 83,461 | 0 | 166,922 |
Tags: combinatorics, constructive algorithms, math, strings
Correct Solution:
```
import sys
import math
from collections import defaultdict,deque
import heapq
mod=998244353
def get(n):
y=int(math.sqrt(1+8*n))
z=(1+y)//2
return z
t = int(sys.stdin.readline())
for _ in range(t):
n=int(sys.stdin.readline())
rem=n
n... | output | 1 | 83,461 | 0 | 166,923 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The subsequence is a sequence that can be derived from another sequence by deleting some elements without changing the order of the remaining elements.
You are given an integer n.
You have to find a sequence s consisting of digits \{1, 3,... | instruction | 0 | 83,462 | 0 | 166,924 |
Tags: combinatorics, constructive algorithms, math, strings
Correct Solution:
```
import bisect
arr = [0, 0] + [i * (i-1) // 2 for i in range(2, 100000)]
for t in range(int(input())):
n = int(input())
if n <= 10:
print("1" + "33" + "7"*n)
continue
i = bisect.bisect_right(arr, n) - 1
k = arr[i]
an... | output | 1 | 83,462 | 0 | 166,925 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The subsequence is a sequence that can be derived from another sequence by deleting some elements without changing the order of the remaining elements.
You are given an integer n.
You have to find a sequence s consisting of digits \{1, 3,... | instruction | 0 | 83,463 | 0 | 166,926 |
Tags: combinatorics, constructive algorithms, math, strings
Correct Solution:
```
q=int(input())
for k in range(q):
n=int(input())
i=0
while i*(i-1)/2<=n:
i+=1
b=i-1
a=n-b*(b-1)//2
print('133'+'7'*a+'3'*(b-2)+'7')
``` | output | 1 | 83,463 | 0 | 166,927 |
Evaluate the correctness of the submitted Python 2 solution to the coding contest problem. Provide a "Yes" or "No" response.
The subsequence is a sequence that can be derived from another sequence by deleting some elements without changing the order of the remaining elements.
You are given an integer n.
You have to... | instruction | 0 | 83,464 | 0 | 166,928 |
Yes | output | 1 | 83,464 | 0 | 166,929 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The subsequence is a sequence that can be derived from another sequence by deleting some elements without changing the order of the remaining elements.
You are given an integer n.
You have to... | instruction | 0 | 83,465 | 0 | 166,930 |
Yes | output | 1 | 83,465 | 0 | 166,931 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The subsequence is a sequence that can be derived from another sequence by deleting some elements without changing the order of the remaining elements.
You are given an integer n.
You have to... | instruction | 0 | 83,466 | 0 | 166,932 |
Yes | output | 1 | 83,466 | 0 | 166,933 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The subsequence is a sequence that can be derived from another sequence by deleting some elements without changing the order of the remaining elements.
You are given an integer n.
You have to... | instruction | 0 | 83,467 | 0 | 166,934 |
Yes | output | 1 | 83,467 | 0 | 166,935 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The subsequence is a sequence that can be derived from another sequence by deleting some elements without changing the order of the remaining elements.
You are given an integer n.
You have to... | instruction | 0 | 83,468 | 0 | 166,936 |
Yes | output | 1 | 83,468 | 0 | 166,937 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The subsequence is a sequence that can be derived from another sequence by deleting some elements without changing the order of the remaining elements.
You are given an integer n.
You have to... | instruction | 0 | 83,469 | 0 | 166,938 |
No | output | 1 | 83,469 | 0 | 166,939 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The subsequence is a sequence that can be derived from another sequence by deleting some elements without changing the order of the remaining elements.
You are given an integer n.
You have to... | instruction | 0 | 83,470 | 0 | 166,940 |
No | output | 1 | 83,470 | 0 | 166,941 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The subsequence is a sequence that can be derived from another sequence by deleting some elements without changing the order of the remaining elements.
You are given an integer n.
You have to... | instruction | 0 | 83,471 | 0 | 166,942 |
No | output | 1 | 83,471 | 0 | 166,943 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The subsequence is a sequence that can be derived from another sequence by deleting some elements without changing the order of the remaining elements.
You are given an integer n.
You have to... | instruction | 0 | 83,472 | 0 | 166,944 |
No | output | 1 | 83,472 | 0 | 166,945 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Homer has two friends Alice and Bob. Both of them are string fans.
One day, Alice and Bob decide to play a game on a string s = s_1 s_2 ... s_n of length n consisting of lowercase English letters. They move in turns alternatively and Alice... | instruction | 0 | 83,610 | 0 | 167,220 |
Tags: games, greedy, strings
Correct Solution:
```
t = int(input())
for _ in range(t):
n = input()
b=""
for i in range(len(n)):
if i%2==0:
if n[i]=='a':
b+='b'
else:
b+='a'
else:
if n[i]=='z':
b+='y'
... | output | 1 | 83,610 | 0 | 167,221 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Homer has two friends Alice and Bob. Both of them are string fans.
One day, Alice and Bob decide to play a game on a string s = s_1 s_2 ... s_n of length n consisting of lowercase English letters. They move in turns alternatively and Alice... | instruction | 0 | 83,613 | 0 | 167,226 |
Tags: games, greedy, strings
Correct Solution:
```
from sys import stdin
input=lambda : stdin.readline().strip()
lin=lambda :list(map(int,input().split()))
iin=lambda :int(input())
main=lambda :map(int,input().split())
from math import ceil,sqrt,factorial,log
from collections import deque
from bisect import bisect_left... | output | 1 | 83,613 | 0 | 167,227 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Homer has two friends Alice and Bob. Both of them are string fans.
One day, Alice and Bob decide to play a game on a string s = s_1 s_2 ... s_n of length n consisting of lowercase English letters. They move in turns alternatively and Alice... | instruction | 0 | 83,614 | 0 | 167,228 |
Tags: games, greedy, strings
Correct Solution:
```
import math
import sys
from collections import Counter
from typing import List
input = sys.stdin.readline
############ ---- Input Functions ---- ############
def inp():
return (int(input()))
def instr():
return (str(input()))
def inlt():
return (list(m... | output | 1 | 83,614 | 0 | 167,229 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Homer has two friends Alice and Bob. Both of them are string fans.
One day, Alice and Bob decide to play a game on a string s = s_1 s_2 ... s_n of length n consisting of lowercase English lett... | instruction | 0 | 83,617 | 0 | 167,234 |
Yes | output | 1 | 83,617 | 0 | 167,235 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Homer has two friends Alice and Bob. Both of them are string fans.
One day, Alice and Bob decide to play a game on a string s = s_1 s_2 ... s_n of length n consisting of lowercase English lett... | instruction | 0 | 83,618 | 0 | 167,236 |
Yes | output | 1 | 83,618 | 0 | 167,237 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Homer has two friends Alice and Bob. Both of them are string fans.
One day, Alice and Bob decide to play a game on a string s = s_1 s_2 ... s_n of length n consisting of lowercase English lett... | instruction | 0 | 83,620 | 0 | 167,240 |
Yes | output | 1 | 83,620 | 0 | 167,241 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Homer has two friends Alice and Bob. Both of them are string fans.
One day, Alice and Bob decide to play a game on a string s = s_1 s_2 ... s_n of length n consisting of lowercase English lett... | instruction | 0 | 83,624 | 0 | 167,248 |
No | output | 1 | 83,624 | 0 | 167,249 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a string s, consisting of lowercase Latin letters. While there is at least one character in the string s that is repeated at least twice, you perform the following operation:
* you choose the index i (1 ≤ i ≤ |s|) such that... | instruction | 0 | 83,625 | 0 | 167,250 |
Tags: brute force, data structures, dp, greedy, strings
Correct Solution:
```
import sys
input = sys.stdin.readline
def maxthestring3():
for _ in range(int(input())):
s = input().rstrip()
lastpos = {v:i for i,v in enumerate(s)}
queue = []
his = set()
for i in range(len(s)):
... | output | 1 | 83,625 | 0 | 167,251 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a string s, consisting of lowercase Latin letters. While there is at least one character in the string s that is repeated at least twice, you perform the following operation:
* you choose the index i (1 ≤ i ≤ |s|) such that... | instruction | 0 | 83,626 | 0 | 167,252 |
Tags: brute force, data structures, dp, greedy, strings
Correct Solution:
```
# ------------------- fast io --------------------
import os
import sys
from io import BytesIO, IOBase
BUFSIZE = 8192
class FastIO(IOBase):
newlines = 0
def __init__(self, file):
self._fd = file.fileno()
self.buffe... | output | 1 | 83,626 | 0 | 167,253 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a string s, consisting of lowercase Latin letters. While there is at least one character in the string s that is repeated at least twice, you perform the following operation:
* you choose the index i (1 ≤ i ≤ |s|) such that... | instruction | 0 | 83,627 | 0 | 167,254 |
Tags: brute force, data structures, dp, greedy, strings
Correct Solution:
```
for _ in range(int(input())):
ans = ""
s = input()
# print(s)
occ = {}
for c in s:
if c not in occ:
occ[c] = 0
occ[c] += 1
remove = set()
prev_i = -1
for i in range(len(s)):
... | output | 1 | 83,627 | 0 | 167,255 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a string s, consisting of lowercase Latin letters. While there is at least one character in the string s that is repeated at least twice, you perform the following operation:
* you choose the index i (1 ≤ i ≤ |s|) such that... | instruction | 0 | 83,628 | 0 | 167,256 |
Tags: brute force, data structures, dp, greedy, strings
Correct Solution:
```
#Code by Sounak, IIESTS
#------------------------------warmup----------------------------
import os
import sys
import math
from io import BytesIO, IOBase
from fractions import Fraction
import collections
from itertools import permutations
fr... | output | 1 | 83,628 | 0 | 167,257 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a string s, consisting of lowercase Latin letters. While there is at least one character in the string s that is repeated at least twice, you perform the following operation:
* you choose the index i (1 ≤ i ≤ |s|) such that... | instruction | 0 | 83,629 | 0 | 167,258 |
Tags: brute force, data structures, dp, greedy, strings
Correct Solution:
```
t = int(input())
for test in range(1, t + 1):
s = list(input())
# start = time.time()
store = [0 for _ in range(len(s))]
curr = 0
visited = set()
last_seen = {}
for idx, ch in enumerate(s[::-1]):
if ch not i... | output | 1 | 83,629 | 0 | 167,259 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a string s, consisting of lowercase Latin letters. While there is at least one character in the string s that is repeated at least twice, you perform the following operation:
* you choose the index i (1 ≤ i ≤ |s|) such that... | instruction | 0 | 83,630 | 0 | 167,260 |
Tags: brute force, data structures, dp, greedy, strings
Correct Solution:
```
t = int(input())
for _ in range(t):
S = input()
l = [[] for i in range(26)]
for i in range(len(S)):
l[ord(S[i])-ord("a")].append(i)
last = [10**10]*26
for i in range(26):
if l[i]:
l[i] = l[i][::... | output | 1 | 83,630 | 0 | 167,261 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a string s, consisting of lowercase Latin letters. While there is at least one character in the string s that is repeated at least twice, you perform the following operation:
* you choose the index i (1 ≤ i ≤ |s|) such that... | instruction | 0 | 83,631 | 0 | 167,262 |
Tags: brute force, data structures, dp, greedy, strings
Correct Solution:
```
t = int(input())
for _ in range(t):
S = input()
l = [[] for i in range(26)]
for i in range(len(S))[::-1]:
l[ord(S[i])-ord("a")].append(i)
ans = ""
now = -1
while True:
nex = 10**10
ind = -1
... | output | 1 | 83,631 | 0 | 167,263 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a string s, consisting of lowercase Latin letters. While there is at least one character in the string s that is repeated at least twice, you perform the following operation:
* you choose the index i (1 ≤ i ≤ |s|) such that... | instruction | 0 | 83,632 | 0 | 167,264 |
Tags: brute force, data structures, dp, greedy, strings
Correct Solution:
```
from collections import Counter
def get_input():
l = [int(e) for e in input().split()]
return l
def possible_char(i, c, s):
n = len(s)
possiblities = set()
ctemp = c.copy()
while i<n and ctemp[s[i]] != 1:
... | output | 1 | 83,632 | 0 | 167,265 |
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. While there is at least one character in the string s that is repeated at least twice, you perform the following operation:
*... | instruction | 0 | 83,633 | 0 | 167,266 |
Yes | output | 1 | 83,633 | 0 | 167,267 |
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. While there is at least one character in the string s that is repeated at least twice, you perform the following operation:
*... | instruction | 0 | 83,634 | 0 | 167,268 |
Yes | output | 1 | 83,634 | 0 | 167,269 |
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. While there is at least one character in the string s that is repeated at least twice, you perform the following operation:
*... | instruction | 0 | 83,635 | 0 | 167,270 |
Yes | output | 1 | 83,635 | 0 | 167,271 |
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. While there is at least one character in the string s that is repeated at least twice, you perform the following operation:
*... | instruction | 0 | 83,636 | 0 | 167,272 |
Yes | output | 1 | 83,636 | 0 | 167,273 |
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. While there is at least one character in the string s that is repeated at least twice, you perform the following operation:
*... | instruction | 0 | 83,637 | 0 | 167,274 |
No | output | 1 | 83,637 | 0 | 167,275 |
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. While there is at least one character in the string s that is repeated at least twice, you perform the following operation:
*... | instruction | 0 | 83,638 | 0 | 167,276 |
No | output | 1 | 83,638 | 0 | 167,277 |
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. While there is at least one character in the string s that is repeated at least twice, you perform the following operation:
*... | instruction | 0 | 83,639 | 0 | 167,278 |
No | output | 1 | 83,639 | 0 | 167,279 |
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. While there is at least one character in the string s that is repeated at least twice, you perform the following operation:
*... | instruction | 0 | 83,640 | 0 | 167,280 |
No | output | 1 | 83,640 | 0 | 167,281 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Polycarpus analyzes a string called abracadabra. This string is constructed using the following algorithm:
* On the first step the string consists of a single character "a".
* On the k-th step Polycarpus concatenates two copies of the... | instruction | 0 | 83,657 | 0 | 167,314 |
Tags: divide and conquer
Correct Solution:
```
aaa =0
def f(l1,r1,l2,r2,top):
global aaa
if (l1>r1 or l2> r2):
return 0
if (top-1<=aaa) or (r1-l1+1<=aaa) or (r2-l2+1<=aaa):
return 0
if top==2:
return 1
if (l1>top):
l1 -=top
r1 -= top
if (l2>top):
l2-=top
r2-=top
... | output | 1 | 83,657 | 0 | 167,315 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Polycarpus analyzes a string called abracadabra. This string is constructed using the following algorithm:
* On the first step the string consists of a single character "a".
* On the k-th step Polycarpus concatenates two copies of the... | instruction | 0 | 83,658 | 0 | 167,316 |
Tags: divide and conquer
Correct Solution:
```
def solve(x,l1,r1,l2,r2):
if x==0:return 1
if l1>x:
l1-=x+1
r1-=x+1
if l2>x:
l2-=x+1
r2-=x+1
ans=max(0,min(r1,r2)-max(l1,l2)+1)
if l1<=x and x<=r1 and l2<=x and x<=r2:
if l1==0 or r1==x*2:
ans=max(ans,max(x-l2,r2-x))
elif l2==0 or r2==x*2:
ans=max(an... | output | 1 | 83,658 | 0 | 167,317 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Polycarpus analyzes a string called abracadabra. This string is constructed using the following algorithm:
* On the first step the string consists of a single character "a".
* On the k-th step Polycarpus concatenates two copies of the... | instruction | 0 | 83,659 | 0 | 167,318 |
Tags: divide and conquer
Correct Solution:
```
aaa =0
def f(l1,r1,l2,r2,top):
global aaa
if (l1>r1 or l2> r2):
return 0
if (top-1<=aaa) or (r1-l1+1<=aaa) or (r2-l2+1<=aaa):
return 0
if top==2:
return 1
if (l1>top):
l1 -=top
r1 -= top
if (l2>top):
l2-=top
r2-=top
#print(l1,r1,... | output | 1 | 83,659 | 0 | 167,319 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Polycarpus analyzes a string called abracadabra. This string is constructed using the following algorithm:
* On the first step the string consists of a single character "a".
* On the k-th... | instruction | 0 | 83,660 | 0 | 167,320 |
No | output | 1 | 83,660 | 0 | 167,321 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Polycarpus analyzes a string called abracadabra. This string is constructed using the following algorithm:
* On the first step the string consists of a single character "a".
* On the k-th... | instruction | 0 | 83,661 | 0 | 167,322 |
No | output | 1 | 83,661 | 0 | 167,323 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Recall that string a is a subsequence of a string b if a can be obtained from b by deletion of several (possibly zero or all) characters. For example, for the string a="wowwo", the following strings are subsequences: "wowwo", "wowo", "oo", "... | instruction | 0 | 84,289 | 0 | 168,578 |
Tags: dp, strings
Correct Solution:
```
from sys import stdin, stdout
import math,sys,heapq
from itertools import permutations, combinations
from collections import defaultdict,deque,OrderedDict
from os import path
import random
import bisect as bi
def yes():print('YES')
def no():print('NO')
if (path.exists('input.txt'... | output | 1 | 84,289 | 0 | 168,579 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Recall that string a is a subsequence of a string b if a can be obtained from b by deletion of several (possibly zero or all) characters. For example, for the string a="wowwo", the following strings are subsequences: "wowwo", "wowo", "oo", "... | instruction | 0 | 84,290 | 0 | 168,580 |
Tags: dp, strings
Correct Solution:
```
a = input()
d = []
l = 0
p = len(a)
for x in range(p):
if x == p-1 and a[x] == "o":
d.append(0)
if a[x] == "v":
l += 1
else:
d.append(l)
l = 0
d.append(l)
n = 0
dp = []
for x in range(len(d)):
if d[x] > 0:
n += d[x]... | output | 1 | 84,290 | 0 | 168,581 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Recall that string a is a subsequence of a string b if a can be obtained from b by deletion of several (possibly zero or all) characters. For example, for the string a="wowwo", the following strings are subsequences: "wowwo", "wowo", "oo", "... | instruction | 0 | 84,291 | 0 | 168,582 |
Tags: dp, strings
Correct Solution:
```
a=input()
res=''
if(len(a)<3):
print(0)
exit()
for i in range(len(a)-1):
if(a[i]=='v' and a[i+1]=='v'):
res+='w'
elif(a[i]=='v' and a[i+1]=='o'):
continue
else:
res+='o'
s=0
a=[]
for i in range(len(res)):
if(res[i]=='w'):
s+... | output | 1 | 84,291 | 0 | 168,583 |
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