message stringlengths 2 433k | message_type stringclasses 2
values | message_id int64 0 1 | conversation_id int64 113 108k | cluster float64 12 12 | __index_level_0__ int64 226 217k |
|---|---|---|---|---|---|
Provide tags and a correct Python 3 solution for this coding contest problem.
The life goes up and down, just like nice sequences. Sequence t1, t2, ..., tn is called nice if the following two conditions are satisfied:
* ti < ti + 1 for each odd i < n;
* ti > ti + 1 for each even i < n.
For example, sequence... | instruction | 0 | 15,512 | 12 | 31,024 |
Tags: brute force, implementation
Correct Solution:
```
def get_bit(diff, i):
return 1 if ((i%2==1 and diff<=0) or (i%2==0 and diff>=0)) else 0
def swap_(i, j, a):
temp = a[i]
a[i] = a[j]
a[j] = temp
def swap(i, j, n, a, mask, S):
change = 0
swap_(i, j, a)
set_index = set([i, j])
... | output | 1 | 15,512 | 12 | 31,025 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The life goes up and down, just like nice sequences. Sequence t1, t2, ..., tn is called nice if the following two conditions are satisfied:
* ti < ti + 1 for each odd i < n;
* ti > ti + 1 for each even i < n.
For example, sequence... | instruction | 0 | 15,513 | 12 | 31,026 |
Tags: brute force, implementation
Correct Solution:
```
def main():
n, l = int(input()), list(map(int, input().split()))
if not (n & 1):
l.append(0)
l.append(150001)
a, b, fails, tmp, res = 0, 150001, [], [], 0
for i, c in enumerate(l, -1):
if i & 1:
if a >= b or b <= c:
... | output | 1 | 15,513 | 12 | 31,027 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The life goes up and down, just like nice sequences. Sequence t1, t2, ..., tn is called nice if the following two conditions are satisfied:
* ti < ti + 1 for each odd i < n;
* ti > ti + 1 for each even i < n.
For example, sequence... | instruction | 0 | 15,514 | 12 | 31,028 |
Tags: brute force, implementation
Correct Solution:
```
def main():
n, l = int(input()), list(map(int, input().split()))
if not (n & 1):
l.append(0)
l.append(150001)
a, b, fails, res = 0, 150001, [], 0
for i, c in enumerate(l, -1):
if i & 1:
if a >= b or b <= c:
... | output | 1 | 15,514 | 12 | 31,029 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The life goes up and down, just like nice sequences. Sequence t1, t2, ..., tn is called nice if the following two conditions are satisfied:
* ti < ti + 1 for each odd i < n;
* ti > ti + 1 for each even i < n.
For example, sequence... | instruction | 0 | 15,515 | 12 | 31,030 |
Tags: brute force, implementation
Correct Solution:
```
def main():
n, l = int(input()), list(map(int, input().split()))
if not (n & 1):
l.append(0)
l.append(150001)
i, b, c, fails0, fails1 = 0, 0, 150001, [], []
try:
while True:
a, b, c = b, c, l[i]
if a >= b... | output | 1 | 15,515 | 12 | 31,031 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The life goes up and down, just like nice sequences. Sequence t1, t2, ..., tn is called nice if the following two conditions are satisfied:
* ti < ti + 1 for each odd i < n;
* ti > ti + 1 for each even i < n.
For example, sequence... | instruction | 0 | 15,516 | 12 | 31,032 |
Tags: brute force, implementation
Correct Solution:
```
def main():
n, l = int(input()), list(map(int, input().split()))
if not (n & 1):
l.append(0)
l.append(150001)
a, b, fails, res = 0, 150001, [], 0
for i, c in enumerate(l, -1):
if i & 1:
if a >= b or b <= c:
... | output | 1 | 15,516 | 12 | 31,033 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The life goes up and down, just like nice sequences. Sequence t1, t2, ..., tn is called nice if the following two conditions are satisfied:
* ti < ti + 1 for each odd i < n;
* ti > ti + 1... | instruction | 0 | 15,517 | 12 | 31,034 |
Yes | output | 1 | 15,517 | 12 | 31,035 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The life goes up and down, just like nice sequences. Sequence t1, t2, ..., tn is called nice if the following two conditions are satisfied:
* ti < ti + 1 for each odd i < n;
* ti > ti + 1... | instruction | 0 | 15,518 | 12 | 31,036 |
Yes | output | 1 | 15,518 | 12 | 31,037 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The life goes up and down, just like nice sequences. Sequence t1, t2, ..., tn is called nice if the following two conditions are satisfied:
* ti < ti + 1 for each odd i < n;
* ti > ti + 1... | instruction | 0 | 15,519 | 12 | 31,038 |
Yes | output | 1 | 15,519 | 12 | 31,039 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The life goes up and down, just like nice sequences. Sequence t1, t2, ..., tn is called nice if the following two conditions are satisfied:
* ti < ti + 1 for each odd i < n;
* ti > ti + 1... | instruction | 0 | 15,520 | 12 | 31,040 |
Yes | output | 1 | 15,520 | 12 | 31,041 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The life goes up and down, just like nice sequences. Sequence t1, t2, ..., tn is called nice if the following two conditions are satisfied:
* ti < ti + 1 for each odd i < n;
* ti > ti + 1... | instruction | 0 | 15,521 | 12 | 31,042 |
No | output | 1 | 15,521 | 12 | 31,043 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The life goes up and down, just like nice sequences. Sequence t1, t2, ..., tn is called nice if the following two conditions are satisfied:
* ti < ti + 1 for each odd i < n;
* ti > ti + 1... | instruction | 0 | 15,522 | 12 | 31,044 |
No | output | 1 | 15,522 | 12 | 31,045 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The life goes up and down, just like nice sequences. Sequence t1, t2, ..., tn is called nice if the following two conditions are satisfied:
* ti < ti + 1 for each odd i < n;
* ti > ti + 1... | instruction | 0 | 15,523 | 12 | 31,046 |
No | output | 1 | 15,523 | 12 | 31,047 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The life goes up and down, just like nice sequences. Sequence t1, t2, ..., tn is called nice if the following two conditions are satisfied:
* ti < ti + 1 for each odd i < n;
* ti > ti + 1... | instruction | 0 | 15,524 | 12 | 31,048 |
No | output | 1 | 15,524 | 12 | 31,049 |
Provide tags and a correct Python 3 solution for this coding contest problem.
For an array b of length m we define the function f as
f(b) = \begin{cases} b[1] & if m = 1 \\\ f(b[1] ⊕ b[2],b[2] ⊕ b[3],...,b[m-1] ⊕ b[m]) & otherwise, \end{cases}
where ⊕ is [bitwise exclusive OR](https://en.wikipedia.org/wiki/... | instruction | 0 | 15,682 | 12 | 31,364 |
Tags: dp
Correct Solution:
```
import bisect
import os, sys, atexit,threading
from io import BytesIO, StringIO
input = BytesIO(os.read(0, os.fstat(0).st_size)).readline
_OUTPUT_BUFFER = StringIO()
sys.stdout = _OUTPUT_BUFFER
@atexit.register
def write():
sys.__stdout__.write(_OUTPUT_BUFFER.getvalue())
def calc... | output | 1 | 15,682 | 12 | 31,365 |
Provide tags and a correct Python 3 solution for this coding contest problem.
For an array b of length m we define the function f as
f(b) = \begin{cases} b[1] & if m = 1 \\\ f(b[1] ⊕ b[2],b[2] ⊕ b[3],...,b[m-1] ⊕ b[m]) & otherwise, \end{cases}
where ⊕ is [bitwise exclusive OR](https://en.wikipedia.org/wiki/... | instruction | 0 | 15,683 | 12 | 31,366 |
Tags: dp
Correct Solution:
```
from sys import stdin, stdout
n = int(stdin.readline())
a = list(map(int, stdin.readline().split(' ')))
list_a = [a]
for _ in range(n - 1):
temp = []
for j in range(1, len(list_a[-1])):
temp.append(list_a[-1][j-1] ^ list_a[-1][j])
list_a.append(temp)
for j in range... | output | 1 | 15,683 | 12 | 31,367 |
Provide tags and a correct Python 3 solution for this coding contest problem.
For an array b of length m we define the function f as
f(b) = \begin{cases} b[1] & if m = 1 \\\ f(b[1] ⊕ b[2],b[2] ⊕ b[3],...,b[m-1] ⊕ b[m]) & otherwise, \end{cases}
where ⊕ is [bitwise exclusive OR](https://en.wikipedia.org/wiki/... | instruction | 0 | 15,684 | 12 | 31,368 |
Tags: dp
Correct Solution:
```
import bisect
import os, sys, atexit,threading
from io import BytesIO, StringIO
from sys import stdin, stdout
# input = BytesIO(os.read(0, os.fstat(0).st_size)).readline
# _OUTPUT_BUFFER = StringIO()
# sys.stdout = _OUTPUT_BUFFER
# @atexit.register
# def write():
# sys.__stdout__.... | output | 1 | 15,684 | 12 | 31,369 |
Provide tags and a correct Python 3 solution for this coding contest problem.
For an array b of length m we define the function f as
f(b) = \begin{cases} b[1] & if m = 1 \\\ f(b[1] ⊕ b[2],b[2] ⊕ b[3],...,b[m-1] ⊕ b[m]) & otherwise, \end{cases}
where ⊕ is [bitwise exclusive OR](https://en.wikipedia.org/wiki/... | instruction | 0 | 15,685 | 12 | 31,370 |
Tags: dp
Correct Solution:
```
tamanho = int(input())
elementos = list(map(int, input().split()))
matriz = [[0] * tamanho for i in range(tamanho)]
for i in range(tamanho):
matriz[0][i] = elementos[i]
for i in range(1, tamanho):
for j in range(tamanho-i):
matriz[i][j] = matriz[i-1][j] ^ matriz[i-1][j+1]
... | output | 1 | 15,685 | 12 | 31,371 |
Provide tags and a correct Python 3 solution for this coding contest problem.
For an array b of length m we define the function f as
f(b) = \begin{cases} b[1] & if m = 1 \\\ f(b[1] ⊕ b[2],b[2] ⊕ b[3],...,b[m-1] ⊕ b[m]) & otherwise, \end{cases}
where ⊕ is [bitwise exclusive OR](https://en.wikipedia.org/wiki/... | instruction | 0 | 15,686 | 12 | 31,372 |
Tags: dp
Correct Solution:
```
n=int(input())
dp=[[-1 for i in range(n+1)]for j in range(n+1)]
dp[0] = list(map(int,input().split()))
for i in range(1,n):
for j in range(n-i):
dp[i][j] = dp[i-1][j]^dp[i-1][j+1]
for i in range(1,n):
for j in range(n-i):
dp[i][j] = max(dp[i-1][j],dp[i-1][j+1], ... | output | 1 | 15,686 | 12 | 31,373 |
Provide tags and a correct Python 3 solution for this coding contest problem.
For an array b of length m we define the function f as
f(b) = \begin{cases} b[1] & if m = 1 \\\ f(b[1] ⊕ b[2],b[2] ⊕ b[3],...,b[m-1] ⊕ b[m]) & otherwise, \end{cases}
where ⊕ is [bitwise exclusive OR](https://en.wikipedia.org/wiki/... | instruction | 0 | 15,687 | 12 | 31,374 |
Tags: dp
Correct Solution:
```
# coding: utf-8
n = int(input())
arr = list(map(int, input().split()))
matrix = [[0] * n for _ in range(n)]
for i in range(n):
matrix[0][i] = arr[i]
for i in range(1, n):
for j in range(n - i):
matrix[i][j] = matrix[i-1][j] ^ matrix[i-1][j+1]
for i in range(1, n):
for j in ... | output | 1 | 15,687 | 12 | 31,375 |
Provide tags and a correct Python 3 solution for this coding contest problem.
For an array b of length m we define the function f as
f(b) = \begin{cases} b[1] & if m = 1 \\\ f(b[1] ⊕ b[2],b[2] ⊕ b[3],...,b[m-1] ⊕ b[m]) & otherwise, \end{cases}
where ⊕ is [bitwise exclusive OR](https://en.wikipedia.org/wiki/... | instruction | 0 | 15,688 | 12 | 31,376 |
Tags: dp
Correct Solution:
```
tamanho = int(input())
elementos = list(map(int, input().split()))
dp = [[0] * tamanho for i in range(tamanho)]
for i in range(tamanho):
dp[0][i] = elementos[i]
for i in range(1, tamanho):
for j in range(tamanho-i):
dp[i][j] = dp[i-1][j] ^ dp[i-1][j+1]
for i in range(1, tam... | output | 1 | 15,688 | 12 | 31,377 |
Provide tags and a correct Python 3 solution for this coding contest problem.
For an array b of length m we define the function f as
f(b) = \begin{cases} b[1] & if m = 1 \\\ f(b[1] ⊕ b[2],b[2] ⊕ b[3],...,b[m-1] ⊕ b[m]) & otherwise, \end{cases}
where ⊕ is [bitwise exclusive OR](https://en.wikipedia.org/wiki/... | instruction | 0 | 15,689 | 12 | 31,378 |
Tags: dp
Correct Solution:
```
import sys
input=sys.stdin.readline
n=int(input())
a=list(map(int,input().split()))
f=[[0]*n for i in range(n)]
for i in range(n):
f[0][i]=a[i]
for i in range(1,n):
for j in range(n-i):
f[i][j]=f[i-1][j]^f[i-1][j+1]
for i in range(1,n):
for j in range(n-i):
f[i... | output | 1 | 15,689 | 12 | 31,379 |
Provide tags and a correct Python 2 solution for this coding contest problem.
For an array b of length m we define the function f as
f(b) = \begin{cases} b[1] & if m = 1 \\\ f(b[1] ⊕ b[2],b[2] ⊕ b[3],...,b[m-1] ⊕ b[m]) & otherwise, \end{cases}
where ⊕ is [bitwise exclusive OR](https://en.wikipedia.org/wiki/... | instruction | 0 | 15,690 | 12 | 31,380 |
Tags: dp
Correct Solution:
```
from sys import stdin, stdout
from collections import Counter, defaultdict
from itertools import permutations, combinations
raw_input = stdin.readline
pr = stdout.write
def in_num():
return int(raw_input())
def in_arr():
return map(int,raw_input().split())
def pr_num(n):
... | output | 1 | 15,690 | 12 | 31,381 |
Provide a correct Python 3 solution for this coding contest problem.
You are given integers N,\ A and B. Determine if there exists a permutation (P_0,\ P_1,\ ...\ P_{2^N-1}) of (0,\ 1,\ ...\ 2^N-1) that satisfies all of the following conditions, and create one such permutation if it exists.
* P_0=A
* P_{2^N-1}=B
* Fo... | instruction | 0 | 15,763 | 12 | 31,526 |
"Correct Solution:
```
def split(n, a, b, remain, ai, ans, width, l=None):
# print(n, a, b, remain, ai, ans, width)
# print(*(f'{c:5d}' for c in ans))
# print(*(f'{c:05b}' for c in ans))
if width == 2:
ans[ai] = a
ans[ai + 1] = b
return
if l is None:
x = a ^ b
... | output | 1 | 15,763 | 12 | 31,527 |
Provide a correct Python 3 solution for this coding contest problem.
You are given integers N,\ A and B. Determine if there exists a permutation (P_0,\ P_1,\ ...\ P_{2^N-1}) of (0,\ 1,\ ...\ 2^N-1) that satisfies all of the following conditions, and create one such permutation if it exists.
* P_0=A
* P_{2^N-1}=B
* Fo... | instruction | 0 | 15,764 | 12 | 31,528 |
"Correct Solution:
```
import sys
input = sys.stdin.readline
N,A,B = map(int,input().split())
def seq(start,bits):
arr = [0]
for i in bits:
arr += [x^(1<<i) for x in arr[::-1]]
return [x^start for x in arr]
def solve(A,B,rest):
if len(rest) == 1:
return [A,B]
if len(rest) == 2:
... | output | 1 | 15,764 | 12 | 31,529 |
Provide a correct Python 3 solution for this coding contest problem.
You are given integers N,\ A and B. Determine if there exists a permutation (P_0,\ P_1,\ ...\ P_{2^N-1}) of (0,\ 1,\ ...\ 2^N-1) that satisfies all of the following conditions, and create one such permutation if it exists.
* P_0=A
* P_{2^N-1}=B
* Fo... | instruction | 0 | 15,765 | 12 | 31,530 |
"Correct Solution:
```
def main():
n, a, b = map(int, input().split())
if (bin(a).count("1")+bin(b).count("1")) % 2 == 0:
print("NO")
return
print("YES")
def calc(a, b, k):
if k == 1:
return [a, b]
for i in range(k):
if ((a >> i) & 1) ^ ((b >> i) ... | output | 1 | 15,765 | 12 | 31,531 |
Provide a correct Python 3 solution for this coding contest problem.
You are given integers N,\ A and B. Determine if there exists a permutation (P_0,\ P_1,\ ...\ P_{2^N-1}) of (0,\ 1,\ ...\ 2^N-1) that satisfies all of the following conditions, and create one such permutation if it exists.
* P_0=A
* P_{2^N-1}=B
* Fo... | instruction | 0 | 15,766 | 12 | 31,532 |
"Correct Solution:
```
import sys
sys.setrecursionlimit(10 ** 6)
int1 = lambda x: int(x) - 1
p2D = lambda x: print(*x, sep="\n")
def II(): return int(sys.stdin.readline())
def MI(): return map(int, sys.stdin.readline().split())
def LI(): return list(map(int, sys.stdin.readline().split()))
def LLI(rows_number): return ... | output | 1 | 15,766 | 12 | 31,533 |
Provide a correct Python 3 solution for this coding contest problem.
You are given integers N,\ A and B. Determine if there exists a permutation (P_0,\ P_1,\ ...\ P_{2^N-1}) of (0,\ 1,\ ...\ 2^N-1) that satisfies all of the following conditions, and create one such permutation if it exists.
* P_0=A
* P_{2^N-1}=B
* Fo... | instruction | 0 | 15,767 | 12 | 31,534 |
"Correct Solution:
```
import os
import sys
if os.getenv("LOCAL"):
sys.stdin = open("_in.txt", "r")
sys.setrecursionlimit(10 ** 9)
INF = float("inf")
IINF = 10 ** 18
MOD = 10 ** 9 + 7
# MOD = 998244353
N, A, B = list(map(int, sys.stdin.buffer.readline().split()))
# 解説
# 違うbitの数が奇数なら戻ってこれる
def bitcount(n):
... | output | 1 | 15,767 | 12 | 31,535 |
Provide a correct Python 3 solution for this coding contest problem.
You are given integers N,\ A and B. Determine if there exists a permutation (P_0,\ P_1,\ ...\ P_{2^N-1}) of (0,\ 1,\ ...\ 2^N-1) that satisfies all of the following conditions, and create one such permutation if it exists.
* P_0=A
* P_{2^N-1}=B
* Fo... | instruction | 0 | 15,768 | 12 | 31,536 |
"Correct Solution:
```
N, A, B = map(int, input().split())
AB = A ^ B
D = bin(AB)[2:].count('1')
if D % 2 == 0:
print('NO')
else:
print('YES')
C = [0] * (2 ** N)
C[0] = str(A)
P = []
for i in range(N):
if AB % 2:
P = P + [i]
else:
P = [i] + P
AB >>= 1
for i in range(1, 2 ** N):
... | output | 1 | 15,768 | 12 | 31,537 |
Provide a correct Python 3 solution for this coding contest problem.
You are given integers N,\ A and B. Determine if there exists a permutation (P_0,\ P_1,\ ...\ P_{2^N-1}) of (0,\ 1,\ ...\ 2^N-1) that satisfies all of the following conditions, and create one such permutation if it exists.
* P_0=A
* P_{2^N-1}=B
* Fo... | instruction | 0 | 15,769 | 12 | 31,538 |
"Correct Solution:
```
from sys import exit, setrecursionlimit, stderr, stdin
from functools import reduce
from itertools import *
from collections import defaultdict, Counter
from bisect import bisect
setrecursionlimit(10**7)
M = 10 ** 9 + 7
def input():
return stdin.readline().strip()
def read():
return int(i... | output | 1 | 15,769 | 12 | 31,539 |
Provide a correct Python 3 solution for this coding contest problem.
You are given integers N,\ A and B. Determine if there exists a permutation (P_0,\ P_1,\ ...\ P_{2^N-1}) of (0,\ 1,\ ...\ 2^N-1) that satisfies all of the following conditions, and create one such permutation if it exists.
* P_0=A
* P_{2^N-1}=B
* Fo... | instruction | 0 | 15,770 | 12 | 31,540 |
"Correct Solution:
```
def makep(n, l, mask):
a = l[0] & mask
b = l[-1] & mask
ll = len(l)
diff = a ^ b
for i in range(n):
if(((diff >> i) & 1) != 0):
diff = 1 << i
break
# print("a = {}, b = {}, mask = {}, ll = {}, diff = {}".format(a, b, mask, ll, diff))
fo... | output | 1 | 15,770 | 12 | 31,541 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Vasya has a sequence a consisting of n integers a_1, a_2, ..., a_n. Vasya may pefrom the following operation: choose some number from the sequence and swap any pair of bits in its binary representation. For example, Vasya can transform numbe... | instruction | 0 | 15,951 | 12 | 31,902 |
Tags: bitmasks, dp
Correct Solution:
```
n = int(input())
cnt = [[0 for _ in range(n + 1)] for _ in range(2)]
b = [bin(_).count('1') for _ in list(map(int, input().split()))]
res = 0
suf_sum = 0
cnt[0][n] = 1
for i in range(n)[::-1]:
_sum, mx = 0, 0
lst_j = i
add = 0
for j in range(i, min(n, i + 65)):
_sum... | output | 1 | 15,951 | 12 | 31,903 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Vasya has a sequence a consisting of n integers a_1, a_2, ..., a_n. Vasya may pefrom the following operation: choose some number from the sequence and swap any pair of bits in its binary representation. For example, Vasya can transform numbe... | instruction | 0 | 15,952 | 12 | 31,904 |
Tags: bitmasks, dp
Correct Solution:
```
# by the authority of GOD author: manhar singh sachdev #
def some_random_function():
"""due to the fast IO template, my code gets caught in
plag check for no reason. That is why, I am making
random functions"""
x = 10
x *= 100
i_dont_know = x
... | output | 1 | 15,952 | 12 | 31,905 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Vasya has a sequence a consisting of n integers a_1, a_2, ..., a_n. Vasya may pefrom the following operation: choose some number from the sequence and swap any pair of bits in its binary representation. For example, Vasya can transform numbe... | instruction | 0 | 15,953 | 12 | 31,906 |
Tags: bitmasks, dp
Correct Solution:
```
#------------------------template--------------------------#
import os
import sys
from math import *
from collections import *
# from fractions import *
# from heapq import*
from bisect import *
from io import BytesIO, IOBase
def vsInput():
sys.stdin = open('input.txt', 'r')... | output | 1 | 15,953 | 12 | 31,907 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Vasya has a sequence a consisting of n integers a_1, a_2, ..., a_n. Vasya may pefrom the following operation: choose some number from the sequence and swap any pair of bits in its binary representation. For example, Vasya can transform numbe... | instruction | 0 | 15,954 | 12 | 31,908 |
Tags: bitmasks, dp
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
from collections import defaultdict
fro... | output | 1 | 15,954 | 12 | 31,909 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Vasya has a sequence a consisting of n integers a_1, a_2, ..., a_n. Vasya may pefrom the following operation: choose some number from the sequence and swap any pair of bits in its binary representation. For example, Vasya can transform numbe... | instruction | 0 | 15,955 | 12 | 31,910 |
Tags: bitmasks, dp
Correct Solution:
```
import sys
#range = xrange
input = sys.stdin.readline
n = int(input())
A = [int(x) for x in input().split()]
B = [bin(a).count('1') for a in A]
Bcumsum = [0]
for b in B:
Bcumsum.append((Bcumsum[-1]+b)%2)
count0 = [0]*(n+1)
for i in reversed(range(n)):
count0[i] = cou... | output | 1 | 15,955 | 12 | 31,911 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Vasya has a sequence a consisting of n integers a_1, a_2, ..., a_n. Vasya may pefrom the following operation: choose some number from the sequence and swap any pair of bits in its binary representation. For example, Vasya can transform numbe... | instruction | 0 | 15,956 | 12 | 31,912 |
Tags: bitmasks, dp
Correct Solution:
```
from array import array
def popcount(x):
res = 0;
while(x > 0):
res += (x & 1)
x >>= 1
return res
def main():
n = int(input())
a = array('i',[popcount(int(x)) for x in input().split(' ')])
ans,s0,s1 = 0,0,0
for i in range(n):
... | output | 1 | 15,956 | 12 | 31,913 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Vasya has a sequence a consisting of n integers a_1, a_2, ..., a_n. Vasya may pefrom the following operation: choose some number from the sequence and swap any pair of bits in its binary representation. For example, Vasya can transform numbe... | instruction | 0 | 15,957 | 12 | 31,914 |
Tags: bitmasks, dp
Correct Solution:
```
# -*- coding: utf-8 -*-
"""
Created on Sun Sep 23 09:23:00 2018
@author: yanni
"""
n = int(input())
a = [int(x) for x in input().split()]
c = [bin(x).count("1") for x in a]
d = [0 for i in range(n+1)]
even = 1
for i in range(1,n+1):
d[i] = d[i-1] + c[i-1]
if (d[i]... | output | 1 | 15,957 | 12 | 31,915 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Vasya has a sequence a consisting of n integers a_1, a_2, ..., a_n. Vasya may pefrom the following operation: choose some number from the sequence and swap any pair of bits in its binary representation. For example, Vasya can transform numbe... | instruction | 0 | 15,958 | 12 | 31,916 |
Tags: bitmasks, dp
Correct Solution:
```
# ---------------------------iye ha aam zindegi---------------------------------------------
import math
import random
import heapq, bisect
import sys
from collections import deque, defaultdict
from fractions import Fraction
import sys
import threading
from collections import de... | output | 1 | 15,958 | 12 | 31,917 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya has a sequence a consisting of n integers a_1, a_2, ..., a_n. Vasya may pefrom the following operation: choose some number from the sequence and swap any pair of bits in its binary represe... | instruction | 0 | 15,959 | 12 | 31,918 |
Yes | output | 1 | 15,959 | 12 | 31,919 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya has a sequence a consisting of n integers a_1, a_2, ..., a_n. Vasya may pefrom the following operation: choose some number from the sequence and swap any pair of bits in its binary represe... | instruction | 0 | 15,960 | 12 | 31,920 |
Yes | output | 1 | 15,960 | 12 | 31,921 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya has a sequence a consisting of n integers a_1, a_2, ..., a_n. Vasya may pefrom the following operation: choose some number from the sequence and swap any pair of bits in its binary represe... | instruction | 0 | 15,961 | 12 | 31,922 |
Yes | output | 1 | 15,961 | 12 | 31,923 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya has a sequence a consisting of n integers a_1, a_2, ..., a_n. Vasya may pefrom the following operation: choose some number from the sequence and swap any pair of bits in its binary represe... | instruction | 0 | 15,962 | 12 | 31,924 |
Yes | output | 1 | 15,962 | 12 | 31,925 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya has a sequence a consisting of n integers a_1, a_2, ..., a_n. Vasya may pefrom the following operation: choose some number from the sequence and swap any pair of bits in its binary represe... | instruction | 0 | 15,963 | 12 | 31,926 |
No | output | 1 | 15,963 | 12 | 31,927 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya has a sequence a consisting of n integers a_1, a_2, ..., a_n. Vasya may pefrom the following operation: choose some number from the sequence and swap any pair of bits in its binary represe... | instruction | 0 | 15,964 | 12 | 31,928 |
No | output | 1 | 15,964 | 12 | 31,929 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya has a sequence a consisting of n integers a_1, a_2, ..., a_n. Vasya may pefrom the following operation: choose some number from the sequence and swap any pair of bits in its binary represe... | instruction | 0 | 15,965 | 12 | 31,930 |
No | output | 1 | 15,965 | 12 | 31,931 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya has a sequence a consisting of n integers a_1, a_2, ..., a_n. Vasya may pefrom the following operation: choose some number from the sequence and swap any pair of bits in its binary represe... | instruction | 0 | 15,966 | 12 | 31,932 |
No | output | 1 | 15,966 | 12 | 31,933 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Gildong recently learned how to find the [longest increasing subsequence](https://en.wikipedia.org/wiki/Longest_increasing_subsequence) (LIS) in O(nlog{n}) time for a sequence of length n. He wants to test himself if he can implement it corr... | instruction | 0 | 16,082 | 12 | 32,164 |
Tags: constructive algorithms, graphs, greedy, two pointers
Correct Solution:
```
import sys; input = sys.stdin.readline
for __ in range(int(input())):
s = input().split()[1]
n = len(s) + 1
amin = []
i = 0; t = n
while i < n - 1:
c = s[i]
if c == '>':
amin.append(t); t -... | output | 1 | 16,082 | 12 | 32,165 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Gildong recently learned how to find the [longest increasing subsequence](https://en.wikipedia.org/wiki/Longest_increasing_subsequence) (LIS) in O(nlog{n}) time for a sequence of length n. He wants to test himself if he can implement it corr... | instruction | 0 | 16,083 | 12 | 32,166 |
Tags: constructive algorithms, graphs, greedy, two pointers
Correct Solution:
```
from sys import stdin,stdout
t = int(stdin.readline().strip())
for _ in range(t):
n,comp = stdin.readline().split()
n = int(n)
clist = []
last,cnt = None,0
lt = 0
for i in range(len(comp)):
if comp[i] == '<... | output | 1 | 16,083 | 12 | 32,167 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Gildong recently learned how to find the [longest increasing subsequence](https://en.wikipedia.org/wiki/Longest_increasing_subsequence) (LIS) in O(nlog{n}) time for a sequence of length n. He wants to test himself if he can implement it corr... | instruction | 0 | 16,084 | 12 | 32,168 |
Tags: constructive algorithms, graphs, greedy, two pointers
Correct Solution:
```
import sys
Q = int(sys.stdin.readline().strip())
for q in range (0, Q):
n, s = sys.stdin.readline().strip().split()
n = int(n)
U = [1]
D = [1]
for i in range (0, n-1):
if s[i] == "<":
U[-1] = U[-1]... | output | 1 | 16,084 | 12 | 32,169 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Gildong recently learned how to find the [longest increasing subsequence](https://en.wikipedia.org/wiki/Longest_increasing_subsequence) (LIS) in O(nlog{n}) time for a sequence of length n. He wants to test himself if he can implement it corr... | instruction | 0 | 16,085 | 12 | 32,170 |
Tags: constructive algorithms, graphs, greedy, two pointers
Correct Solution:
```
def getInput():
line = input().split()
return int(line[0]), line[1]
def sLIS(n, s):
ans = list(range(n, 0, -1))
rev = []
i = 0
while i < n-1:
if s[i] == '<':
j = i+1
while j < n-1 and s[j] == '<':
j += 1
rev.ap... | output | 1 | 16,085 | 12 | 32,171 |
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