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.
And where the are the phone numbers?
You are given a string s consisting of lowercase English letters and an integer k. Find the lexicographically smallest string t of length k, such that its s... | instruction | 0 | 51,055 | 0 | 102,110 |
No | output | 1 | 51,055 | 0 | 102,111 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
And where the are the phone numbers?
You are given a string s consisting of lowercase English letters and an integer k. Find the lexicographically smallest string t of length k, such that its s... | instruction | 0 | 51,056 | 0 | 102,112 |
No | output | 1 | 51,056 | 0 | 102,113 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
And where the are the phone numbers?
You are given a string s consisting of lowercase English letters and an integer k. Find the lexicographically smallest string t of length k, such that its s... | instruction | 0 | 51,057 | 0 | 102,114 |
No | output | 1 | 51,057 | 0 | 102,115 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
And where the are the phone numbers?
You are given a string s consisting of lowercase English letters and an integer k. Find the lexicographically smallest string t of length k, such that its s... | instruction | 0 | 51,058 | 0 | 102,116 |
No | output | 1 | 51,058 | 0 | 102,117 |
Provide a correct Python 3 solution for this coding contest problem.
How many strings can be obtained by applying the following operation on a string S exactly K times: "choose one lowercase English letter and insert it somewhere"?
The answer can be enormous, so print it modulo (10^9+7).
Constraints
* K is an integ... | instruction | 0 | 51,059 | 0 | 102,118 |
"Correct Solution:
```
k = int(input())
s = input()
n = len(s)
mod = 10**9 + 7
m = [1]*(k+1)
M = [1]*(k+1)
h = [1]*(k+1)
for i in range(k):
m[i+1] = (m[i] * 25)%mod
M[i+1] = (M[i] * 26)%mod
h[i+1] = (h[i]*(n+i)*pow(i+1,mod-2,mod))%mod
ans = 0
for i in range(k+1):
ans += m[i]*M[k-i]%mod*h[i]%mod
an... | output | 1 | 51,059 | 0 | 102,119 |
Provide a correct Python 3 solution for this coding contest problem.
How many strings can be obtained by applying the following operation on a string S exactly K times: "choose one lowercase English letter and insert it somewhere"?
The answer can be enormous, so print it modulo (10^9+7).
Constraints
* K is an integ... | instruction | 0 | 51,060 | 0 | 102,120 |
"Correct Solution:
```
K = int(input())
S = input()
N = len(S)
MOD = 10 ** 9 + 7
# 逆元の前計算
factorial = [1, 1]
inverse = [1, 1]
invere_base = [0, 1]
for i in range(2, K + N + 1):
factorial.append((factorial[-1] * i) % MOD)
invere_base.append((-invere_base[MOD % i] * (MOD // i)) % MOD)
inverse.append((invers... | output | 1 | 51,060 | 0 | 102,121 |
Provide a correct Python 3 solution for this coding contest problem.
How many strings can be obtained by applying the following operation on a string S exactly K times: "choose one lowercase English letter and insert it somewhere"?
The answer can be enormous, so print it modulo (10^9+7).
Constraints
* K is an integ... | instruction | 0 | 51,061 | 0 | 102,122 |
"Correct Solution:
```
K = int(input())
S = input()
m = 1000000007
def make_factorial_table(n):
result = [0] * (n + 1)
result[0] = 1
for i in range(1, n + 1):
result[i] = result[i - 1] * i % m
return result
def mcomb(n, k):
if n == 0 and k == 0:
return 1
if n < k or k < 0:
... | output | 1 | 51,061 | 0 | 102,123 |
Provide a correct Python 3 solution for this coding contest problem.
How many strings can be obtained by applying the following operation on a string S exactly K times: "choose one lowercase English letter and insert it somewhere"?
The answer can be enormous, so print it modulo (10^9+7).
Constraints
* K is an integ... | instruction | 0 | 51,062 | 0 | 102,124 |
"Correct Solution:
```
K=int(input())
S=input()
N=len(S)
mod=10**9+7
fact=[1]*(K+N)
for i in range(2,K+N):
fact[i]=fact[i-1]*i%mod
inv=[1]*(K+N)
inv[K+N-1]=pow(fact[K+N-1],mod-2,mod)
for i in range(K+N-2,0,-1):
inv[i]=inv[i+1]*(i+1)%mod
def comb(n,r):
ret=fact[n]*inv[r]*inv[n-r]%mod
return ret
a... | output | 1 | 51,062 | 0 | 102,125 |
Provide a correct Python 3 solution for this coding contest problem.
How many strings can be obtained by applying the following operation on a string S exactly K times: "choose one lowercase English letter and insert it somewhere"?
The answer can be enormous, so print it modulo (10^9+7).
Constraints
* K is an integ... | instruction | 0 | 51,063 | 0 | 102,126 |
"Correct Solution:
```
K=int(input())
S=input()
mod=10**9+7
def inv(x):
return pow(x,mod-2,mod)
N=len(S)
ans=0
tmp1=1
tmp2=1
for i in range(0,K+1):
ans=ans+(tmp1*tmp2)
ans%=mod
tmp1=tmp1*25
tmp1%=mod
tmp2=tmp2*(inv(i+1)*(N+K-i))
tmp2%=mod
#print(tmp1,tmp2)
print(ans)
``` | output | 1 | 51,063 | 0 | 102,127 |
Provide a correct Python 3 solution for this coding contest problem.
How many strings can be obtained by applying the following operation on a string S exactly K times: "choose one lowercase English letter and insert it somewhere"?
The answer can be enormous, so print it modulo (10^9+7).
Constraints
* K is an integ... | instruction | 0 | 51,064 | 0 | 102,128 |
"Correct Solution:
```
def prepare(n, MOD):
f = 1
factorials = [1]
for m in range(1, n + 1):
f *= m
f %= MOD
factorials.append(f)
inv = pow(f, MOD - 2, MOD)
invs = [1] * (n + 1)
invs[n] = inv
for m in range(n, 1, -1):
inv *= m
inv %= MOD
invs[m... | output | 1 | 51,064 | 0 | 102,129 |
Provide a correct Python 3 solution for this coding contest problem.
How many strings can be obtained by applying the following operation on a string S exactly K times: "choose one lowercase English letter and insert it somewhere"?
The answer can be enormous, so print it modulo (10^9+7).
Constraints
* K is an integ... | instruction | 0 | 51,065 | 0 | 102,130 |
"Correct Solution:
```
k=int(input())
s=len(input())
def cmb(n,r,mod):
if r<0 or n<r:
return 0
r=min(r,n-r)
return g1[n]*g2[r]*g2[n-r]%mod
mod=10**9+7
g1=[1,1]#元table
g2=[1,1]#逆元table
inv=[0,1]#逆元table計算用
for i in range(2,k+s+1):
g1.append(g1[-1]*i%mod)
inv.append(-inv[mod%i]*(mod//i)%mod)
g2.append... | output | 1 | 51,065 | 0 | 102,131 |
Provide a correct Python 3 solution for this coding contest problem.
How many strings can be obtained by applying the following operation on a string S exactly K times: "choose one lowercase English letter and insert it somewhere"?
The answer can be enormous, so print it modulo (10^9+7).
Constraints
* K is an integ... | instruction | 0 | 51,066 | 0 | 102,132 |
"Correct Solution:
```
k = int(input())
n = len(input())
p = 10**9 + 7
a = 1
fct = [a]
for i in range(1, n + k + 1):
a = (a * i) % p
fct.append(a)
b = pow(fct[-1], p - 2, p)
inv = [b]
for i in range(1, n + k + 1)[::-1]:
b = (b * i) % p
inv.append(b)
inv.reverse()
ans = 0
pow25, pow26 = [1], [1]
for i in... | output | 1 | 51,066 | 0 | 102,133 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
How many strings can be obtained by applying the following operation on a string S exactly K times: "choose one lowercase English letter and insert it somewhere"?
The answer can be enormous, so... | instruction | 0 | 51,068 | 0 | 102,136 |
Yes | output | 1 | 51,068 | 0 | 102,137 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
How many strings can be obtained by applying the following operation on a string S exactly K times: "choose one lowercase English letter and insert it somewhere"?
The answer can be enormous, so... | instruction | 0 | 51,069 | 0 | 102,138 |
Yes | output | 1 | 51,069 | 0 | 102,139 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
How many strings can be obtained by applying the following operation on a string S exactly K times: "choose one lowercase English letter and insert it somewhere"?
The answer can be enormous, so... | instruction | 0 | 51,070 | 0 | 102,140 |
Yes | output | 1 | 51,070 | 0 | 102,141 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
How many strings can be obtained by applying the following operation on a string S exactly K times: "choose one lowercase English letter and insert it somewhere"?
The answer can be enormous, so... | instruction | 0 | 51,071 | 0 | 102,142 |
No | output | 1 | 51,071 | 0 | 102,143 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
How many strings can be obtained by applying the following operation on a string S exactly K times: "choose one lowercase English letter and insert it somewhere"?
The answer can be enormous, so... | instruction | 0 | 51,072 | 0 | 102,144 |
No | output | 1 | 51,072 | 0 | 102,145 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
How many strings can be obtained by applying the following operation on a string S exactly K times: "choose one lowercase English letter and insert it somewhere"?
The answer can be enormous, so... | instruction | 0 | 51,073 | 0 | 102,146 |
No | output | 1 | 51,073 | 0 | 102,147 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
How many strings can be obtained by applying the following operation on a string S exactly K times: "choose one lowercase English letter and insert it somewhere"?
The answer can be enormous, so... | instruction | 0 | 51,074 | 0 | 102,148 |
No | output | 1 | 51,074 | 0 | 102,149 |
Provide a correct Python 3 solution for this coding contest problem.
You are given a string S of length N consisting of lowercase English letters.
Process Q queries of the following two types:
* Type 1: change the i_q-th character of S to c_q. (Do nothing if the i_q-th character is already c_q.)
* Type 2: answer the... | instruction | 0 | 51,075 | 0 | 102,150 |
"Correct Solution:
```
def i1():
return int(input())
def i2():
return [int(i) for i in input().split()]
import sys
sys.setrecursionlimit(10**6)
n=i1()
s=input()
q=i1()
N=0
while n:
n>>=1
N+=1
n=2**N
t=[0 for i in range(2*n-1)]
def ud(i,x):
i+=n-1
t[i]=x
while i:
i=(i-1)//2
t[i]=t[i*2+1] | t[i*2+2... | output | 1 | 51,075 | 0 | 102,151 |
Provide a correct Python 3 solution for this coding contest problem.
You are given a string S of length N consisting of lowercase English letters.
Process Q queries of the following two types:
* Type 1: change the i_q-th character of S to c_q. (Do nothing if the i_q-th character is already c_q.)
* Type 2: answer the... | instruction | 0 | 51,076 | 0 | 102,152 |
"Correct Solution:
```
def RSQ_add(i, x, y):
while True:
if i > n:
break
BIT[y][i] += x
i += i & -i
def RSQ_getsum(i, x):
s = 0
while True:
if i <= 0:
break
s += BIT[x][i]
i -= i & -i
return s
n = int(input())
s = list(input())
q ... | output | 1 | 51,076 | 0 | 102,153 |
Provide a correct Python 3 solution for this coding contest problem.
You are given a string S of length N consisting of lowercase English letters.
Process Q queries of the following two types:
* Type 1: change the i_q-th character of S to c_q. (Do nothing if the i_q-th character is already c_q.)
* Type 2: answer the... | instruction | 0 | 51,078 | 0 | 102,156 |
"Correct Solution:
```
def segfunc(x,y):
return set(x)|set(y)
ide_ele=set()
class SegTree():
def __init__(self,init_val,segfunc,ide_ele):
n=len(init_val)
self.segfunc=segfunc
self.ide_ele=ide_ele
self.num=1<<(n-1).bit_length()
self.tree=[ide_ele]*2*self.num
for i in range(n):
self.tree... | output | 1 | 51,078 | 0 | 102,157 |
Provide a correct Python 3 solution for this coding contest problem.
You are given a string S of length N consisting of lowercase English letters.
Process Q queries of the following two types:
* Type 1: change the i_q-th character of S to c_q. (Do nothing if the i_q-th character is already c_q.)
* Type 2: answer the... | instruction | 0 | 51,079 | 0 | 102,158 |
"Correct Solution:
```
N = int(input())
A = [ord(a) - 97 for a in input()]
NN = 19
BIT=[[0]*(2**NN+1) for _ in range(26)]
def addbit(t, i, x):
while i <= 2**NN:
BIT[t][i] += x
i += i & (-i)
def getsum(t, i):
ret = 0
while i != 0:
ret += BIT[t][i]
i -= i&(-i)
return ret... | output | 1 | 51,079 | 0 | 102,159 |
Provide a correct Python 3 solution for this coding contest problem.
You are given a string S of length N consisting of lowercase English letters.
Process Q queries of the following two types:
* Type 1: change the i_q-th character of S to c_q. (Do nothing if the i_q-th character is already c_q.)
* Type 2: answer the... | instruction | 0 | 51,080 | 0 | 102,160 |
"Correct Solution:
```
def main():
import sys
input=sys.stdin.buffer.readline
n=int(input())+1
data=[[0]*n*2for _ in range(26)]
def update(i,x):
i+=n
for d in data:
j=i
if d[j]:
d[j]=0
j//=2
while j:
d[j]=d[j+j]|d[j-~j]
j//=2
break
d=... | output | 1 | 51,080 | 0 | 102,161 |
Provide a correct Python 3 solution for this coding contest problem.
You are given a string S of length N consisting of lowercase English letters.
Process Q queries of the following two types:
* Type 1: change the i_q-th character of S to c_q. (Do nothing if the i_q-th character is already c_q.)
* Type 2: answer the... | instruction | 0 | 51,081 | 0 | 102,162 |
"Correct Solution:
```
import sys
read=sys.stdin.readline
class SEGTree:
def __init__(self,n):
self.Unit=0
i=1
while(i<n):
i*=2
self.SEG=[self.Unit]*(2*i-1)
self.d=i
def update(self,i,x):
i+=self.d-1
self.SEG[i]=1<<x
while i>0:
... | output | 1 | 51,081 | 0 | 102,163 |
Provide a correct Python 3 solution for this coding contest problem.
You are given a string S of length N consisting of lowercase English letters.
Process Q queries of the following two types:
* Type 1: change the i_q-th character of S to c_q. (Do nothing if the i_q-th character is already c_q.)
* Type 2: answer the... | instruction | 0 | 51,082 | 0 | 102,164 |
"Correct Solution:
```
from bisect import bisect_left,bisect_right,insort
n = int(input())
s = list("-" + str(input()))
lis = [[] for i in range(26)]
for i in range(1,n+1):
num = ord(s[i])-ord("a")
lis[num].append(i)
q = int(input())
for turn in range(q):
query = list(map(str,input().split()))
if quer... | output | 1 | 51,082 | 0 | 102,165 |
Provide a correct Python 3 solution for this coding contest problem.
Given a string of length n s = s1, s2,…, sn and m queries. Each query qk (1 ≤ k ≤ m) is one of four types, "L ++", "L-", "R ++", "R-", and l [for the kth query qk. k] and r [k] are defined below.
* L ++: l [k] = l [k-1] + 1, r [k] = r [k-1]
* L-: l... | instruction | 0 | 51,258 | 0 | 102,516 |
"Correct Solution:
```
import random
n,m = map(int,input().split())
s = input()
#s[i:j]のハッシュ値:(hash1[j]-hash1[i]*power1[j-i]%mod1)%mod1,(hash2[j]-hash2[i]*power2[j-i]%mod2)%mod2
#長さnの文字列s
base1 = 1007
mod1 = 10**9+7
base2 = 2009
mod2 = 10**9+9
modTank1 = [3000012541,3000012553,3000012563,3000012649,3000012683,300001... | output | 1 | 51,258 | 0 | 102,517 |
Provide a correct Python 3 solution for this coding contest problem.
Given a string of length n s = s1, s2,…, sn and m queries. Each query qk (1 ≤ k ≤ m) is one of four types, "L ++", "L-", "R ++", "R-", and l [for the kth query qk. k] and r [k] are defined below.
* L ++: l [k] = l [k-1] + 1, r [k] = r [k-1]
* L-: l... | instruction | 0 | 51,259 | 0 | 102,518 |
"Correct Solution:
```
def main():
n, m = map(int, input().split())
s = input()
mem = set()
base = ord("a") - 1
mod1 = 1000000007
mod2 = 2147483647
h1 = [0]
h2 = [0]
for c in s:
h1.append((h1[-1] * 27 + ord(c) - base) % mod1)
h2.append((h2[-1] * 27 + ord(c) - base) % mod2)
pow_mem1 = {0:1}
... | output | 1 | 51,259 | 0 | 102,519 |
Provide a correct Python 3 solution for this coding contest problem.
Given a string of length n s = s1, s2,…, sn and m queries. Each query qk (1 ≤ k ≤ m) is one of four types, "L ++", "L-", "R ++", "R-", and l [for the kth query qk. k] and r [k] are defined below.
* L ++: l [k] = l [k-1] + 1, r [k] = r [k-1]
* L-: l... | instruction | 0 | 51,260 | 0 | 102,520 |
"Correct Solution:
```
import math,string,itertools,fractions,heapq,collections,re,array,bisect,sys,random,time,copy,functools
sys.setrecursionlimit(10**7)
inf = 10**20
eps = 1.0 / 10**13
mod = 10**9+7
dd = [(-1,0),(0,1),(1,0),(0,-1)]
ddn = [(-1,0),(-1,1),(0,1),(1,1),(1,0),(1,-1),(0,-1),(-1,-1)]
def LI(): return [int... | output | 1 | 51,260 | 0 | 102,521 |
Provide a correct Python 3 solution for this coding contest problem.
Given a string of length n s = s1, s2,…, sn and m queries. Each query qk (1 ≤ k ≤ m) is one of four types, "L ++", "L-", "R ++", "R-", and l [for the kth query qk. k] and r [k] are defined below.
* L ++: l [k] = l [k-1] + 1, r [k] = r [k-1]
* L-: l... | instruction | 0 | 51,261 | 0 | 102,522 |
"Correct Solution:
```
# coding:utf-8
INF = float('inf')
MOD = 10 ** 9 + 7
def inpl(): return list(map(int, input().split()))
class RollingHash:
def __init__(self, s, base, mod):
self.s = s
self.length = length = len(s)
self.base = base
self.mod = mod
self.h = h = [0] * ... | output | 1 | 51,261 | 0 | 102,523 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Given a string of length n s = s1, s2,…, sn and m queries. Each query qk (1 ≤ k ≤ m) is one of four types, "L ++", "L-", "R ++", "R-", and l [for the kth query qk. k] and r [k] are defined below... | instruction | 0 | 51,262 | 0 | 102,524 |
No | output | 1 | 51,262 | 0 | 102,525 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Given a string of length n s = s1, s2,…, sn and m queries. Each query qk (1 ≤ k ≤ m) is one of four types, "L ++", "L-", "R ++", "R-", and l [for the kth query qk. k] and r [k] are defined below... | instruction | 0 | 51,263 | 0 | 102,526 |
No | output | 1 | 51,263 | 0 | 102,527 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Given a string of length n s = s1, s2,…, sn and m queries. Each query qk (1 ≤ k ≤ m) is one of four types, "L ++", "L-", "R ++", "R-", and l [for the kth query qk. k] and r [k] are defined below... | instruction | 0 | 51,264 | 0 | 102,528 |
No | output | 1 | 51,264 | 0 | 102,529 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Alice has a string s. She really likes the letter "a". She calls a string good if strictly more than half of the characters in that string are "a"s. For example "aaabb", "axaa" are good strings, and "baca", "awwwa", "" (empty string) are not... | instruction | 0 | 51,362 | 0 | 102,724 |
Tags: implementation, strings
Correct Solution:
```
s=input()
l=len(s)
cnt=s.count('a')
print(min(l,cnt*2-1))
``` | output | 1 | 51,362 | 0 | 102,725 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Alice has a string s. She really likes the letter "a". She calls a string good if strictly more than half of the characters in that string are "a"s. For example "aaabb", "axaa" are good strings, and "baca", "awwwa", "" (empty string) are not... | instruction | 0 | 51,363 | 0 | 102,726 |
Tags: implementation, strings
Correct Solution:
```
w = input()
l = len(w)
a = w.count('a')
x = l - a
if a-x > 0:
print(l)
else:
print(l + a - x - 1)
``` | output | 1 | 51,363 | 0 | 102,727 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Alice has a string s. She really likes the letter "a". She calls a string good if strictly more than half of the characters in that string are "a"s. For example "aaabb", "axaa" are good strings, and "baca", "awwwa", "" (empty string) are not... | instruction | 0 | 51,364 | 0 | 102,728 |
Tags: implementation, strings
Correct Solution:
```
s=input()
q=s.count("a")
print(min(2*q-1,len(s)))
``` | output | 1 | 51,364 | 0 | 102,729 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Alice has a string s. She really likes the letter "a". She calls a string good if strictly more than half of the characters in that string are "a"s. For example "aaabb", "axaa" are good strings, and "baca", "awwwa", "" (empty string) are not... | instruction | 0 | 51,365 | 0 | 102,730 |
Tags: implementation, strings
Correct Solution:
```
my_string = input()
number_of_a = my_string.count('a')
print(min(number_of_a + number_of_a-1, len(my_string)), end='')
``` | output | 1 | 51,365 | 0 | 102,731 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Alice has a string s. She really likes the letter "a". She calls a string good if strictly more than half of the characters in that string are "a"s. For example "aaabb", "axaa" are good strings, and "baca", "awwwa", "" (empty string) are not... | instruction | 0 | 51,366 | 0 | 102,732 |
Tags: implementation, strings
Correct Solution:
```
s=input()
x=len(s)
count=0
for i in s:
if i=="a":
count+=1
y=x//2
if count>y:
print(len(s))
elif count<=y:
while count<=y:
y-=1
print(count+y)
``` | output | 1 | 51,366 | 0 | 102,733 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Alice has a string s. She really likes the letter "a". She calls a string good if strictly more than half of the characters in that string are "a"s. For example "aaabb", "axaa" are good strings, and "baca", "awwwa", "" (empty string) are not... | instruction | 0 | 51,367 | 0 | 102,734 |
Tags: implementation, strings
Correct Solution:
```
def mp():
return map(int, input().split())
s = input()
n = len(s)
a = s.count('a')
x = max(0, n - a * 2 + 1)
print(n - x)
``` | output | 1 | 51,367 | 0 | 102,735 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Alice has a string s. She really likes the letter "a". She calls a string good if strictly more than half of the characters in that string are "a"s. For example "aaabb", "axaa" are good strings, and "baca", "awwwa", "" (empty string) are not... | instruction | 0 | 51,368 | 0 | 102,736 |
Tags: implementation, strings
Correct Solution:
```
# AC
import sys
class Main:
def __init__(self):
self.buff = None
self.index = 0
def next(self):
if self.buff is None or self.index == len(self.buff):
self.buff = sys.stdin.readline().split()
self.index = 0
... | output | 1 | 51,368 | 0 | 102,737 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Alice has a string s. She really likes the letter "a". She calls a string good if strictly more than half of the characters in that string are "a"s. For example "aaabb", "axaa" are good strings, and "baca", "awwwa", "" (empty string) are not... | instruction | 0 | 51,369 | 0 | 102,738 |
Tags: implementation, strings
Correct Solution:
```
s = input()
a, other = 0, 0
for c in s:
if c == 'a':
a += 1
else:
other += 1
if a > other:
print(len(s))
else:
print(len(s) - (other - (a - 1)))
``` | output | 1 | 51,369 | 0 | 102,739 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Alice has a string s. She really likes the letter "a". She calls a string good if strictly more than half of the characters in that string are "a"s. For example "aaabb", "axaa" are good strings,... | instruction | 0 | 51,370 | 0 | 102,740 |
Yes | output | 1 | 51,370 | 0 | 102,741 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Alice has a string s. She really likes the letter "a". She calls a string good if strictly more than half of the characters in that string are "a"s. For example "aaabb", "axaa" are good strings,... | instruction | 0 | 51,371 | 0 | 102,742 |
Yes | output | 1 | 51,371 | 0 | 102,743 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Alice has a string s. She really likes the letter "a". She calls a string good if strictly more than half of the characters in that string are "a"s. For example "aaabb", "axaa" are good strings,... | instruction | 0 | 51,372 | 0 | 102,744 |
Yes | output | 1 | 51,372 | 0 | 102,745 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Alice has a string s. She really likes the letter "a". She calls a string good if strictly more than half of the characters in that string are "a"s. For example "aaabb", "axaa" are good strings,... | instruction | 0 | 51,373 | 0 | 102,746 |
Yes | output | 1 | 51,373 | 0 | 102,747 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Alice has a string s. She really likes the letter "a". She calls a string good if strictly more than half of the characters in that string are "a"s. For example "aaabb", "axaa" are good strings,... | instruction | 0 | 51,374 | 0 | 102,748 |
No | output | 1 | 51,374 | 0 | 102,749 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Alice has a string s. She really likes the letter "a". She calls a string good if strictly more than half of the characters in that string are "a"s. For example "aaabb", "axaa" are good strings,... | instruction | 0 | 51,375 | 0 | 102,750 |
No | output | 1 | 51,375 | 0 | 102,751 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Alice has a string s. She really likes the letter "a". She calls a string good if strictly more than half of the characters in that string are "a"s. For example "aaabb", "axaa" are good strings,... | instruction | 0 | 51,376 | 0 | 102,752 |
No | output | 1 | 51,376 | 0 | 102,753 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Alice has a string s. She really likes the letter "a". She calls a string good if strictly more than half of the characters in that string are "a"s. For example "aaabb", "axaa" are good strings,... | instruction | 0 | 51,377 | 0 | 102,754 |
No | output | 1 | 51,377 | 0 | 102,755 |
Provide tags and a correct Python 3 solution for this coding contest problem.
A telephone number is a sequence of exactly 11 digits, where the first digit is 8. For example, the sequence 80011223388 is a telephone number, but the sequences 70011223388 and 80000011223388 are not.
You are given a string s of length n, ... | instruction | 0 | 51,378 | 0 | 102,756 |
Tags: brute force, greedy, strings
Correct Solution:
```
for _ in range(int(input())):
n = int(input())
s = input()
idx = -1
for i in range(n):
if s[i] == '8':
idx = i
break
if n - idx >= 11 and idx != -1:
print('YES')
else:
print('NO')
``` | output | 1 | 51,378 | 0 | 102,757 |
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