message stringlengths 2 23.4k | message_type stringclasses 2
values | message_id int64 0 1 | conversation_id int64 129 108k | cluster float64 6 6 | __index_level_0__ int64 258 216k |
|---|---|---|---|---|---|
Provide tags and a correct Python 3 solution for this coding contest problem.
Vera adores poems. All the poems Vera knows are divided into quatrains (groups of four lines) and in each quatrain some lines contain rhymes.
Let's consider that all lines in the poems consist of lowercase Latin letters (without spaces). Le... | instruction | 0 | 9,272 | 6 | 18,544 |
Tags: implementation
Correct Solution:
```
import math
#------------------------------warmup----------------------------
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.buffer =... | output | 1 | 9,272 | 6 | 18,545 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vera adores poems. All the poems Vera knows are divided into quatrains (groups of four lines) and in each quatrain some lines contain rhymes.
Let's consider that all lines in the poems consist ... | instruction | 0 | 9,273 | 6 | 18,546 |
Yes | output | 1 | 9,273 | 6 | 18,547 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vera adores poems. All the poems Vera knows are divided into quatrains (groups of four lines) and in each quatrain some lines contain rhymes.
Let's consider that all lines in the poems consist ... | instruction | 0 | 9,274 | 6 | 18,548 |
Yes | output | 1 | 9,274 | 6 | 18,549 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vera adores poems. All the poems Vera knows are divided into quatrains (groups of four lines) and in each quatrain some lines contain rhymes.
Let's consider that all lines in the poems consist ... | instruction | 0 | 9,275 | 6 | 18,550 |
Yes | output | 1 | 9,275 | 6 | 18,551 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vera adores poems. All the poems Vera knows are divided into quatrains (groups of four lines) and in each quatrain some lines contain rhymes.
Let's consider that all lines in the poems consist ... | instruction | 0 | 9,276 | 6 | 18,552 |
Yes | output | 1 | 9,276 | 6 | 18,553 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vera adores poems. All the poems Vera knows are divided into quatrains (groups of four lines) and in each quatrain some lines contain rhymes.
Let's consider that all lines in the poems consist ... | instruction | 0 | 9,277 | 6 | 18,554 |
No | output | 1 | 9,277 | 6 | 18,555 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vera adores poems. All the poems Vera knows are divided into quatrains (groups of four lines) and in each quatrain some lines contain rhymes.
Let's consider that all lines in the poems consist ... | instruction | 0 | 9,278 | 6 | 18,556 |
No | output | 1 | 9,278 | 6 | 18,557 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vera adores poems. All the poems Vera knows are divided into quatrains (groups of four lines) and in each quatrain some lines contain rhymes.
Let's consider that all lines in the poems consist ... | instruction | 0 | 9,279 | 6 | 18,558 |
No | output | 1 | 9,279 | 6 | 18,559 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vera adores poems. All the poems Vera knows are divided into quatrains (groups of four lines) and in each quatrain some lines contain rhymes.
Let's consider that all lines in the poems consist ... | instruction | 0 | 9,280 | 6 | 18,560 |
No | output | 1 | 9,280 | 6 | 18,561 |
Provide a correct Python 3 solution for this coding contest problem.
Stylish is a programming language whose syntax comprises names, that are sequences of Latin alphabet letters, three types of grouping symbols, periods ('.'), and newlines. Grouping symbols, namely round brackets ('(' and ')'), curly brackets ('{' and... | instruction | 0 | 9,861 | 6 | 19,722 |
"Correct Solution:
```
import re
while 1:
R=[]
C=[]
S=[]
p,q=map(int,input().split())
if p==q==0:break
#P=[input()for _ in range(p)]
G=[]
R_c=[0]
C_c=[0]
S_c=[0]
for _ in range(p):
s=input()
cnt=s.count
G.append(re.match('[.]*',s).span()[1])
R_... | output | 1 | 9,861 | 6 | 19,723 |
Provide a correct Python 3 solution for this coding contest problem.
Stylish is a programming language whose syntax comprises names, that are sequences of Latin alphabet letters, three types of grouping symbols, periods ('.'), and newlines. Grouping symbols, namely round brackets ('(' and ')'), curly brackets ('{' and... | instruction | 0 | 9,862 | 6 | 19,724 |
"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**10
mod = 10**9+7
dd = [(0,-1),(1,0),(0,1),(-1,0)]
ddn = [(0,-1),(1,-1),(1,0),(1,1),(0,1),(-1,-1),(-1,0),(-1,1)]
def LI(): return [int... | output | 1 | 9,862 | 6 | 19,725 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Stylish is a programming language whose syntax comprises names, that are sequences of Latin alphabet letters, three types of grouping symbols, periods ('.'), and newlines. Grouping symbols, name... | instruction | 0 | 9,863 | 6 | 19,726 |
No | output | 1 | 9,863 | 6 | 19,727 |
Provide tags and a correct Python 3 solution for this coding contest problem.
R3D3 spent some time on an internship in MDCS. After earning enough money, he decided to go on a holiday somewhere far, far away. He enjoyed suntanning, drinking alcohol-free cocktails and going to concerts of popular local bands. While list... | instruction | 0 | 10,417 | 6 | 20,834 |
Tags: dp, greedy
Correct Solution:
```
import sys,heapq
#sys.stdin=open("data.txt")
input=sys.stdin.readline
n,a,b=map(int,input().split())
if a<b: a,b=b,a
if b==0:
# 1 01 001 0001 ... is optimal, plus a long series of 0's
print((n-1)*a)
else:
# pascal's triangle thing
pascal=[[1]*20005]... | output | 1 | 10,417 | 6 | 20,835 |
Provide tags and a correct Python 3 solution for this coding contest problem.
R3D3 spent some time on an internship in MDCS. After earning enough money, he decided to go on a holiday somewhere far, far away. He enjoyed suntanning, drinking alcohol-free cocktails and going to concerts of popular local bands. While list... | instruction | 0 | 10,418 | 6 | 20,836 |
Tags: dp, greedy
Correct Solution:
```
import sys
#sys.stdin=open("data.txt")
input=sys.stdin.readline
n,a,b=map(int,input().split())
if a<b: a,b=b,a
if b==0:
# 1 01 001 0001 ... is optimal, plus a long series of 0's
print((n-1)*a)
else:
# pascal's triangle thing
pascal=[[1]*20005]
for i in range... | output | 1 | 10,418 | 6 | 20,837 |
Provide tags and a correct Python 3 solution for this coding contest problem.
R3D3 spent some time on an internship in MDCS. After earning enough money, he decided to go on a holiday somewhere far, far away. He enjoyed suntanning, drinking alcohol-free cocktails and going to concerts of popular local bands. While list... | instruction | 0 | 10,419 | 6 | 20,838 |
Tags: dp, greedy
Correct Solution:
```
import sys,heapq
#sys.stdin=open("data.txt")
input=sys.stdin.readline
n,a,b=map(int,input().split())
if a<b: a,b=b,a
if b==0:
# 1 01 001 0001 ... is optimal, plus a long series of 0's
print((n-1)*a)
else:
# pascal's triangle thing
pascal=[[1]*20005]
for i in... | output | 1 | 10,419 | 6 | 20,839 |
Provide tags and a correct Python 3 solution for this coding contest problem.
R3D3 spent some time on an internship in MDCS. After earning enough money, he decided to go on a holiday somewhere far, far away. He enjoyed suntanning, drinking alcohol-free cocktails and going to concerts of popular local bands. While list... | instruction | 0 | 10,420 | 6 | 20,840 |
Tags: dp, greedy
Correct Solution:
```
import sys,heapq
#sys.stdin=open("data.txt")
input=sys.stdin.readline
n,a,b=map(int,input().split())
if a<b: a,b=b,a
if b==0:
# 1 01 001 0001 ... is optimal, plus a long series of 0's
print((n-1)*a)
else:
# start with the null node (prefix cost 0)
# can split a ... | output | 1 | 10,420 | 6 | 20,841 |
Provide tags and a correct Python 3 solution for this coding contest problem.
After overcoming the stairs Dasha came to classes. She needed to write a password to begin her classes. The password is a string of length n which satisfies the following requirements:
* There is at least one digit in the string,
* The... | instruction | 0 | 10,429 | 6 | 20,858 |
Tags: brute force, dp, implementation
Correct Solution:
```
import sys
from itertools import permutations
from operator import itemgetter
def debug(x, table):
for name, val in table.items():
if x is val:
print('DEBUG:{} -> {}'.format(name, val), file=sys.stderr)
return None
INF = 1... | output | 1 | 10,429 | 6 | 20,859 |
Provide tags and a correct Python 3 solution for this coding contest problem.
After overcoming the stairs Dasha came to classes. She needed to write a password to begin her classes. The password is a string of length n which satisfies the following requirements:
* There is at least one digit in the string,
* The... | instruction | 0 | 10,430 | 6 | 20,860 |
Tags: brute force, dp, implementation
Correct Solution:
```
import itertools
def transform_char(char):
if char in ('#', '&', '*'):
return '*'
elif char.isdigit():
return '0'
else:
return 'a'
def transform(string):
ans = ''.join(transform_char(char) for char in ... | output | 1 | 10,430 | 6 | 20,861 |
Provide tags and a correct Python 3 solution for this coding contest problem.
After overcoming the stairs Dasha came to classes. She needed to write a password to begin her classes. The password is a string of length n which satisfies the following requirements:
* There is at least one digit in the string,
* The... | instruction | 0 | 10,431 | 6 | 20,862 |
Tags: brute force, dp, implementation
Correct Solution:
```
import itertools
#input
n, m = (int(x) for x in input().split())
symbols = []
for i in range(n):
symbols.append(input())
sym1 = set([ '#', '*', '&'])
sym2 = set(list('1234567890'))
sym3 = set(list('qwertyuiopasdfghjklzxcvbnm'))
# print(len(sym3))
min_... | output | 1 | 10,431 | 6 | 20,863 |
Provide tags and a correct Python 3 solution for this coding contest problem.
After overcoming the stairs Dasha came to classes. She needed to write a password to begin her classes. The password is a string of length n which satisfies the following requirements:
* There is at least one digit in the string,
* The... | instruction | 0 | 10,432 | 6 | 20,864 |
Tags: brute force, dp, implementation
Correct Solution:
```
n,m=map(int,input().split())
c=[list([])for i in range(3)]
for i in range(n):
t=input()
s=''
for i in range(m):
if ord(t[i])<43:s+='1'
elif ord(t[i])<59:s+='2'
else: s+='3'
x1=s.find('1') if s.find('1') != -1 else 60
... | output | 1 | 10,432 | 6 | 20,865 |
Provide tags and a correct Python 3 solution for this coding contest problem.
After overcoming the stairs Dasha came to classes. She needed to write a password to begin her classes. The password is a string of length n which satisfies the following requirements:
* There is at least one digit in the string,
* The... | instruction | 0 | 10,433 | 6 | 20,866 |
Tags: brute force, dp, implementation
Correct Solution:
```
n, m = map(int, input().split())
a = [0] * n
for i in range(n):
a[i] = list(input())
g1 = '*#&'
g2 = 'qwertyuiopasdfghjklzxcvbnm'
g3 = '1234567890'
b = [[-1] * 3 for i in range(n)]
for i in range(n):
f1, f2, f3 = 0, 0, 0
for j in range(m):
... | output | 1 | 10,433 | 6 | 20,867 |
Provide tags and a correct Python 3 solution for this coding contest problem.
After overcoming the stairs Dasha came to classes. She needed to write a password to begin her classes. The password is a string of length n which satisfies the following requirements:
* There is at least one digit in the string,
* The... | instruction | 0 | 10,434 | 6 | 20,868 |
Tags: brute force, dp, implementation
Correct Solution:
```
n, m = [int(i) for i in input().split()]
inf = 10 ** 18
fl = [inf] * n
fn = [inf] * n
fs = [inf] * n
for i in range(n):
s = input()
for q in range(m):
if s[q] >= '0' and s[q] <= '9' and fn[i] == inf:
fn[i] = q
if s[q] >= 'a'... | output | 1 | 10,434 | 6 | 20,869 |
Provide tags and a correct Python 3 solution for this coding contest problem.
After overcoming the stairs Dasha came to classes. She needed to write a password to begin her classes. The password is a string of length n which satisfies the following requirements:
* There is at least one digit in the string,
* The... | instruction | 0 | 10,435 | 6 | 20,870 |
Tags: brute force, dp, implementation
Correct Solution:
```
read = lambda: map(int, input().split())
n, m = read()
a = [input() for i in range(n)]
c1 = '1234567890'
c2 = 'qwertyuiopasdfghjklzxcvbnm'
c3 = '#&*'
inf = 10 ** 20
l1 = [inf] * n
l2 = [inf] * n
l3 = [inf] * n
for i in range(n):
for j in range(m):
... | output | 1 | 10,435 | 6 | 20,871 |
Provide tags and a correct Python 3 solution for this coding contest problem.
After overcoming the stairs Dasha came to classes. She needed to write a password to begin her classes. The password is a string of length n which satisfies the following requirements:
* There is at least one digit in the string,
* The... | instruction | 0 | 10,436 | 6 | 20,872 |
Tags: brute force, dp, implementation
Correct Solution:
```
n,m=map(int,input().split())
a=[]
for i in range(65,91):
a.append(chr(i+32))
b=[]
f1=0
f2=0
f3=0
for i in range(0,10):
b.append(str(i))
c=['*','#','&']
l=[]
s=[]
l1=[1000000000 for i in range(n)]
l2=[1000000000 for i in range(n)]
l3=[1000000000 for i i... | output | 1 | 10,436 | 6 | 20,873 |
Provide tags and a correct Python 3 solution for this coding contest problem.
During a normal walk in the forest, Katie has stumbled upon a mysterious code! However, the mysterious code had some characters unreadable. She has written down this code as a string c consisting of lowercase English characters and asterisks... | instruction | 0 | 10,866 | 6 | 21,732 |
Tags: dp, strings
Correct Solution:
```
import sys
from array import array # noqa: F401
from typing import List, Tuple, TypeVar, Generic, Sequence, Union # noqa: F401
def input():
return sys.stdin.buffer.readline().decode('utf-8')
def build_next_table(s):
s = '*' + s + '*'
n = len(s) - 1
kmp = [0]... | output | 1 | 10,866 | 6 | 21,733 |
Provide tags and a correct Python 3 solution for this coding contest problem.
One unknown hacker wants to get the admin's password of AtForces testing system, to get problems from the next contest. To achieve that, he sneaked into the administrator's office and stole a piece of paper with a list of n passwords — strin... | instruction | 0 | 10,877 | 6 | 21,754 |
Tags: dfs and similar, dsu, graphs
Correct Solution:
```
from sys import stdin,stdout
from collections import defaultdict as df
import sys
sys.setrecursionlimit(10**4)
def dfs(i):
visited[i]=True
for j in d1[p[i]]:
if visited[d[j]]==False:
dfs(d[j])
d=dict()
j=0
p=... | output | 1 | 10,877 | 6 | 21,755 |
Provide tags and a correct Python 3 solution for this coding contest problem.
One unknown hacker wants to get the admin's password of AtForces testing system, to get problems from the next contest. To achieve that, he sneaked into the administrator's office and stole a piece of paper with a list of n passwords — strin... | instruction | 0 | 10,878 | 6 | 21,756 |
Tags: dfs and similar, dsu, graphs
Correct Solution:
```
from sys import stdin
input = stdin.readline
if __name__ == '__main__':
pdct = {}
for _ in range(int(input())):
s = input().strip()
for c in s:
if c not in pdct:
pdct[c] = c
l = list(filter(lambda o... | output | 1 | 10,878 | 6 | 21,757 |
Provide tags and a correct Python 3 solution for this coding contest problem.
One unknown hacker wants to get the admin's password of AtForces testing system, to get problems from the next contest. To achieve that, he sneaked into the administrator's office and stole a piece of paper with a list of n passwords — strin... | instruction | 0 | 10,879 | 6 | 21,758 |
Tags: dfs and similar, dsu, graphs
Correct Solution:
```
def union(x, y):
xr = find(x)
yr = find(y)
root[yr] = xr
def find(x):
if root[x] != x:
x = find(root[x])
return x
import sys
input = sys.stdin.readline
used = set()
root = dict()
for _ in range(int(input())):
s = input().rstri... | output | 1 | 10,879 | 6 | 21,759 |
Provide tags and a correct Python 3 solution for this coding contest problem.
One unknown hacker wants to get the admin's password of AtForces testing system, to get problems from the next contest. To achieve that, he sneaked into the administrator's office and stole a piece of paper with a list of n passwords — strin... | instruction | 0 | 10,880 | 6 | 21,760 |
Tags: dfs and similar, dsu, graphs
Correct Solution:
```
from collections import deque
from sys import stdin, stdout
read, whrite = stdin.readline, stdout.write
g = [[] for i in range(300000)]
visited = [False] * 300000
def dfs(i):
pilha = deque()
pilha.append(i)
visited[i] = 1
while pilha:
i... | output | 1 | 10,880 | 6 | 21,761 |
Provide tags and a correct Python 3 solution for this coding contest problem.
One unknown hacker wants to get the admin's password of AtForces testing system, to get problems from the next contest. To achieve that, he sneaked into the administrator's office and stole a piece of paper with a list of n passwords — strin... | instruction | 0 | 10,881 | 6 | 21,762 |
Tags: dfs and similar, dsu, graphs
Correct Solution:
```
import os
import sys
from io import BytesIO, IOBase
import math
from decimal import Decimal
from decimal import *
from collections import defaultdict, deque
import heapq
from decimal import Decimal
getcontext().prec = 25
abcd='abcdefghijklmnopqrstuvwxyz'
MOD = po... | output | 1 | 10,881 | 6 | 21,763 |
Provide tags and a correct Python 3 solution for this coding contest problem.
One unknown hacker wants to get the admin's password of AtForces testing system, to get problems from the next contest. To achieve that, he sneaked into the administrator's office and stole a piece of paper with a list of n passwords — strin... | instruction | 0 | 10,882 | 6 | 21,764 |
Tags: dfs and similar, dsu, graphs
Correct Solution:
```
## necessary imports
import sys
input = sys.stdin.readline
from math import ceil, floor, factorial;
# swap_array function
def swaparr(arr, a,b):
temp = arr[a];
arr[a] = arr[b];
arr[b] = temp
## gcd function
def gcd(a,b):
if a == 0:
retur... | output | 1 | 10,882 | 6 | 21,765 |
Provide tags and a correct Python 3 solution for this coding contest problem.
One unknown hacker wants to get the admin's password of AtForces testing system, to get problems from the next contest. To achieve that, he sneaked into the administrator's office and stole a piece of paper with a list of n passwords — strin... | instruction | 0 | 10,883 | 6 | 21,766 |
Tags: dfs and similar, dsu, graphs
Correct Solution:
```
import sys
input = sys.stdin.readline
def union(a,b):
xa=find(a)
xb=find(b)
if xa!=xb:
if size[xa]>=size[xb]:
parent[xb]=xa
size[xa]+=size[xb]
else:
parent[xa]=xb
size[xb]+=size[xa]
def f... | output | 1 | 10,883 | 6 | 21,767 |
Provide tags and a correct Python 3 solution for this coding contest problem.
One unknown hacker wants to get the admin's password of AtForces testing system, to get problems from the next contest. To achieve that, he sneaked into the administrator's office and stole a piece of paper with a list of n passwords — strin... | instruction | 0 | 10,884 | 6 | 21,768 |
Tags: dfs and similar, dsu, graphs
Correct Solution:
```
def union(x, y):
xr = find(x)
yr = find(y)
root[xr] = yr
def find(x):
while root[x] != x:
x = root[x]
return x
import sys
input = sys.stdin.readline
used = set()
root = dict()
for _ in range(int(input())):
s = input().rstrip()... | output | 1 | 10,884 | 6 | 21,769 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Returning back to problem solving, Gildong is now studying about palindromes. He learned that a palindrome is a string that is the same as its reverse. For example, strings "pop", "noon", "x", and "kkkkkk" are palindromes, while strings "moo... | instruction | 0 | 10,893 | 6 | 21,786 |
Tags: brute force, constructive algorithms, greedy, implementation, strings
Correct Solution:
```
import sys
import math
import heapq
import collections
def inputnum():
return(int(input()))
def inputnums():
return(map(int,input().split()))
def inputlist():
return(list(map(int,input().split())))
def inputstr... | output | 1 | 10,893 | 6 | 21,787 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Returning back to problem solving, Gildong is now studying about palindromes. He learned that a palindrome is a string that is the same as its reverse. For example, strings "pop", "noon", "x", and "kkkkkk" are palindromes, while strings "moo... | instruction | 0 | 10,894 | 6 | 21,788 |
Tags: brute force, constructive algorithms, greedy, implementation, strings
Correct Solution:
```
n, m = map(int, input().split())
a = []
for _ in range(n):
s = input()
a.append(s)
def is_palindrome(s1, s2):
eh = True
for i in range(len(s1)):
if s1[i] != s2[m-i-1]:
eh = False
break
return eh
def is_pali... | output | 1 | 10,894 | 6 | 21,789 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Returning back to problem solving, Gildong is now studying about palindromes. He learned that a palindrome is a string that is the same as its reverse. For example, strings "pop", "noon", "x", and "kkkkkk" are palindromes, while strings "moo... | instruction | 0 | 10,895 | 6 | 21,790 |
Tags: brute force, constructive algorithms, greedy, implementation, strings
Correct Solution:
```
n,m=map(int,input().split())
s=[""]*n
kouho=[]
result_mid=""
result_left=""
result_right=""
for i in range(n):
s[i]=input()
for i in range(n):
s_i_rev=s[i][::-1]
if s[i] not in kouho:
kouho.append(s_i_... | output | 1 | 10,895 | 6 | 21,791 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Returning back to problem solving, Gildong is now studying about palindromes. He learned that a palindrome is a string that is the same as its reverse. For example, strings "pop", "noon", "x", and "kkkkkk" are palindromes, while strings "moo... | instruction | 0 | 10,896 | 6 | 21,792 |
Tags: brute force, constructive algorithms, greedy, implementation, strings
Correct Solution:
```
n,m=map(int,input().split())
s=[]
z=""
for i in range(n):
s.append(input())
count=0
x=""
for i in range(int(n)):
j=i+1
if(s[i]==s[i][::-1]):
z=s[i]
continue
while(j<n):
... | output | 1 | 10,896 | 6 | 21,793 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Returning back to problem solving, Gildong is now studying about palindromes. He learned that a palindrome is a string that is the same as its reverse. For example, strings "pop", "noon", "x", and "kkkkkk" are palindromes, while strings "moo... | instruction | 0 | 10,898 | 6 | 21,796 |
Tags: brute force, constructive algorithms, greedy, implementation, strings
Correct Solution:
```
n, m = map(int, input().split())
s1 = ""
s2 = ""
sc = ""
dat = []
for _ in range(n):
dat.append(input())
while 0 < len(dat):
s = dat[0]
del dat[0]
if sc == "":
if s == "".join(reversed(s)):
... | output | 1 | 10,898 | 6 | 21,797 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Returning back to problem solving, Gildong is now studying about palindromes. He learned that a palindrome is a string that is the same as its reverse. For example, strings "pop", "noon", "x", and "kkkkkk" are palindromes, while strings "moo... | instruction | 0 | 10,899 | 6 | 21,798 |
Tags: brute force, constructive algorithms, greedy, implementation, strings
Correct Solution:
```
n, m = map(int, input().split())
d = {}
f = []
a = []
used = [False] * n
for i in range(n):
s = input()
if s[::-1] in d:
used[i] = True
used[d[s[::-1]]] = True
f = [s] + f + [s[::-1]]
... | output | 1 | 10,899 | 6 | 21,799 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Returning back to problem solving, Gildong is now studying about palindromes. He learned that a palindrome is a string that is the same as its reverse. For example, strings "pop", "noon", "x", and "kkkkkk" are palindromes, while strings "moo... | instruction | 0 | 10,900 | 6 | 21,800 |
Tags: brute force, constructive algorithms, greedy, implementation, strings
Correct Solution:
```
n,m = map(int,input().split())
dic = {}
dic2 = {}
for i in range(n):
s = input()
temp = list(s)
temp.reverse()
rev = "".join(temp)
if s == rev:
if s not in dic2:
dic2[s] = 0
... | output | 1 | 10,900 | 6 | 21,801 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Genos recently installed the game Zuma on his phone. In Zuma there exists a line of n gemstones, the i-th of which has color ci. The goal of the game is to destroy all the gemstones in the line as quickly as possible.
In one second, Genos i... | instruction | 0 | 11,206 | 6 | 22,412 |
Tags: dp
Correct Solution:
```
import os
import sys
from io import BytesIO, IOBase
# region fastio
BUFSIZE = 8192
class FastIO(IOBase):
newlines = 0
def __init__(self, file):
self._fd = file.fileno()
self.buffer = BytesIO()
self.writable = "x" in file.mode or "r" not in file.mode
... | output | 1 | 11,206 | 6 | 22,413 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The preferred way to generate user login in Polygon is to concatenate a prefix of the user's first name and a prefix of their last name, in that order. Each prefix must be non-empty, and any of the prefixes can be the full name. Typically th... | instruction | 0 | 11,349 | 6 | 22,698 |
Tags: brute force, greedy, sortings
Correct Solution:
```
a=input().split()
n=[]
X=''
for i in a[0]:
X+=i
n.append(X+a[1][0])
n=sorted(n)
print(n[0])
``` | output | 1 | 11,349 | 6 | 22,699 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The preferred way to generate user login in Polygon is to concatenate a prefix of the user's first name and a prefix of their last name, in that order. Each prefix must be non-empty, and any of the prefixes can be the full name. Typically th... | instruction | 0 | 11,350 | 6 | 22,700 |
Tags: brute force, greedy, sortings
Correct Solution:
```
f,l=map(str,input().split())
i=1
j=0
while i<len(f):
if ord(f[i])<ord(l[j]):
i+=1
else:
break
print(f[0:i]+l[0])
``` | output | 1 | 11,350 | 6 | 22,701 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The preferred way to generate user login in Polygon is to concatenate a prefix of the user's first name and a prefix of their last name, in that order. Each prefix must be non-empty, and any of the prefixes can be the full name. Typically th... | instruction | 0 | 11,351 | 6 | 22,702 |
Tags: brute force, greedy, sortings
Correct Solution:
```
fname,lname = input().split()
ans=""
ans+=fname[0]
for x in range(1,len(fname)):
if ord(fname[x]) < ord(lname[0]):
ans+=fname[x]
else:break;
ans+=lname[0]
print(ans)
``` | output | 1 | 11,351 | 6 | 22,703 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The preferred way to generate user login in Polygon is to concatenate a prefix of the user's first name and a prefix of their last name, in that order. Each prefix must be non-empty, and any of the prefixes can be the full name. Typically th... | instruction | 0 | 11,352 | 6 | 22,704 |
Tags: brute force, greedy, sortings
Correct Solution:
```
s = input().split(' ')
result = s[0][0]
end = s[1][0]
for i in range(1, len(s[0])):
if ord(s[0][i]) < ord(end):
result += s[0][i]
else:
break
result += end
print(result)
``` | output | 1 | 11,352 | 6 | 22,705 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The preferred way to generate user login in Polygon is to concatenate a prefix of the user's first name and a prefix of their last name, in that order. Each prefix must be non-empty, and any of the prefixes can be the full name. Typically th... | instruction | 0 | 11,353 | 6 | 22,706 |
Tags: brute force, greedy, sortings
Correct Solution:
```
inu=input().split()
first,last=inu[0],inu[1]
l,name,st=[],"",""
for fi in first:
st=st+fi
name=st
for se in last:
name=name+se
l.append(name)
l.sort()
print(l[0])
``` | output | 1 | 11,353 | 6 | 22,707 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The preferred way to generate user login in Polygon is to concatenate a prefix of the user's first name and a prefix of their last name, in that order. Each prefix must be non-empty, and any of the prefixes can be the full name. Typically th... | instruction | 0 | 11,354 | 6 | 22,708 |
Tags: brute force, greedy, sortings
Correct Solution:
```
first, last = input().split()
if len(first) == 1:
print(first[0]+last[0])
else:
i=1
while i < len(first) and first[i] < last[0]:
i+=1
print(first[:i]+last[0])
``` | output | 1 | 11,354 | 6 | 22,709 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The preferred way to generate user login in Polygon is to concatenate a prefix of the user's first name and a prefix of their last name, in that order. Each prefix must be non-empty, and any of the prefixes can be the full name. Typically th... | instruction | 0 | 11,355 | 6 | 22,710 |
Tags: brute force, greedy, sortings
Correct Solution:
```
# May the Speedforce be with us...
'''
for _ in range(int(input())):
arr=list(map(int,input().split()))
n,k=map(int,input().split())
n=int(input())
s=input()
from collections import defaultdict
d=defaultdict()
d=dict()
s=set()
s.intersection()
s.union()
s.diff... | output | 1 | 11,355 | 6 | 22,711 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The preferred way to generate user login in Polygon is to concatenate a prefix of the user's first name and a prefix of their last name, in that order. Each prefix must be non-empty, and any of the prefixes can be the full name. Typically th... | instruction | 0 | 11,356 | 6 | 22,712 |
Tags: brute force, greedy, sortings
Correct Solution:
```
s = input()
n, f = s.split(' ')
s=n[0]
i=1
while i < len(n) and n[i] < f[0]:
s += n[i]
i+=1
print(s+f[0])
``` | output | 1 | 11,356 | 6 | 22,713 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The preferred way to generate user login in Polygon is to concatenate a prefix of the user's first name and a prefix of their last name, in that order. Each prefix must be non-empty, and any of ... | instruction | 0 | 11,357 | 6 | 22,714 |
Yes | output | 1 | 11,357 | 6 | 22,715 |
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