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.
A sequence of n non-negative integers (n ≥ 2) a_1, a_2, ..., a_n is called good if for all i from 1 to n-1 the following condition holds true: $$$a_1 \: \& \: a_2 \: \& \: ... \: \& \: a_i = a_{i+1} \: \& \: a_{i+2} \: \& \: ... \: \& \: a_n... | instruction | 0 | 40,659 | 12 | 81,318 |
Tags: bitmasks, combinatorics, constructive algorithms, math
Correct Solution:
```
# n * (n-1)
# (k-2)!
mod = 1000000007
for i in range(int(input())):
n = int(input())
d = list(map(int, input().split()))
s = d[0]
for j in range(1, len(d)):
s &= d[j]
c = 0
for j in d:
c += (j =... | output | 1 | 40,659 | 12 | 81,319 |
Provide tags and a correct Python 3 solution for this coding contest problem.
A sequence of n non-negative integers (n ≥ 2) a_1, a_2, ..., a_n is called good if for all i from 1 to n-1 the following condition holds true: $$$a_1 \: \& \: a_2 \: \& \: ... \: \& \: a_i = a_{i+1} \: \& \: a_{i+2} \: \& \: ... \: \& \: a_n... | instruction | 0 | 40,660 | 12 | 81,320 |
Tags: bitmasks, combinatorics, constructive algorithms, math
Correct Solution:
```
from functools import reduce
from sys import stdin
input = stdin.readline
def main():
MOD = int(1e9 + 7)
test = int(input())
for _ in range(test):
n = int(input())
ara = [int(x) for x in input().split()]
... | output | 1 | 40,660 | 12 | 81,321 |
Provide tags and a correct Python 3 solution for this coding contest problem.
A sequence of n non-negative integers (n ≥ 2) a_1, a_2, ..., a_n is called good if for all i from 1 to n-1 the following condition holds true: $$$a_1 \: \& \: a_2 \: \& \: ... \: \& \: a_i = a_{i+1} \: \& \: a_{i+2} \: \& \: ... \: \& \: a_n... | instruction | 0 | 40,661 | 12 | 81,322 |
Tags: bitmasks, combinatorics, constructive algorithms, math
Correct Solution:
```
import sys,os,io
input = io.BytesIO(os.read(0, os.fstat(0).st_size)).readline
def ncr(n, r, p):
# initialize numerator
# and denominator
num = den = 1
for i in range(r):
num = (num * (n - i)) % p
den = (d... | output | 1 | 40,661 | 12 | 81,323 |
Provide tags and a correct Python 3 solution for this coding contest problem.
A sequence of n non-negative integers (n ≥ 2) a_1, a_2, ..., a_n is called good if for all i from 1 to n-1 the following condition holds true: $$$a_1 \: \& \: a_2 \: \& \: ... \: \& \: a_i = a_{i+1} \: \& \: a_{i+2} \: \& \: ... \: \& \: a_n... | instruction | 0 | 40,662 | 12 | 81,324 |
Tags: bitmasks, combinatorics, constructive algorithms, math
Correct Solution:
```
import sys
input=sys.stdin.readline
rem=1000000007
for _ in range(int(input())):
n=int(input())
ar=list(map(int,input().split()))
ma=max(ar)
req=[]
st=1
while(st<=ma):
count=0
for i in range(n):
... | output | 1 | 40,662 | 12 | 81,325 |
Provide tags and a correct Python 3 solution for this coding contest problem.
A sequence of n non-negative integers (n ≥ 2) a_1, a_2, ..., a_n is called good if for all i from 1 to n-1 the following condition holds true: $$$a_1 \: \& \: a_2 \: \& \: ... \: \& \: a_i = a_{i+1} \: \& \: a_{i+2} \: \& \: ... \: \& \: a_n... | instruction | 0 | 40,663 | 12 | 81,326 |
Tags: bitmasks, combinatorics, constructive algorithms, math
Correct Solution:
```
t= int(input())
for test in range(t):
n = int(input())
a = list(map(int,input().split()))
k=a[0]
for x in a:
k&=x
r=a.count(k)
r*=r-1
for i in range(2,len(a)-1):
r=r*i%(10**9+7)
print(r)
``... | output | 1 | 40,663 | 12 | 81,327 |
Provide tags and a correct Python 3 solution for this coding contest problem.
A sequence of n non-negative integers (n ≥ 2) a_1, a_2, ..., a_n is called good if for all i from 1 to n-1 the following condition holds true: $$$a_1 \: \& \: a_2 \: \& \: ... \: \& \: a_i = a_{i+1} \: \& \: a_{i+2} \: \& \: ... \: \& \: a_n... | instruction | 0 | 40,664 | 12 | 81,328 |
Tags: bitmasks, combinatorics, constructive algorithms, math
Correct Solution:
```
import math, sys
input = sys.stdin.readline
for _ in range(int(input())):
n, values = int(input()), [int(i) for i in input().split()]
low, cnt, ans = min(values), values.count(min(values)), float("inf")
for i in range(n):
... | output | 1 | 40,664 | 12 | 81,329 |
Provide tags and a correct Python 3 solution for this coding contest problem.
A sequence of n non-negative integers (n ≥ 2) a_1, a_2, ..., a_n is called good if for all i from 1 to n-1 the following condition holds true: $$$a_1 \: \& \: a_2 \: \& \: ... \: \& \: a_i = a_{i+1} \: \& \: a_{i+2} \: \& \: ... \: \& \: a_n... | instruction | 0 | 40,665 | 12 | 81,330 |
Tags: bitmasks, combinatorics, constructive algorithms, math
Correct Solution:
```
MOD=(7+10**9)
def nc2(a):
return int((a * (a - 1) / 2)) % MOD
def fac(n):
if n <= 0:
return 1
ans = 1
for i in range(1, n + 1):
ans *= i
ans %= MOD
return ans
def solution():
n=int(input())... | output | 1 | 40,665 | 12 | 81,331 |
Provide tags and a correct Python 3 solution for this coding contest problem.
A sequence of n non-negative integers (n ≥ 2) a_1, a_2, ..., a_n is called good if for all i from 1 to n-1 the following condition holds true: $$$a_1 \: \& \: a_2 \: \& \: ... \: \& \: a_i = a_{i+1} \: \& \: a_{i+2} \: \& \: ... \: \& \: a_n... | instruction | 0 | 40,666 | 12 | 81,332 |
Tags: bitmasks, combinatorics, constructive algorithms, math
Correct Solution:
```
inf=int(1e9+7)
for s in[*open(0)][2::2]:
l=[*map(int,s.split())]
n=len(l)
a=max(l)
for i in l:
a&=i
c=l.count(a)
if c>1:
v=1
for i in range(2,n-1):
v=(v*i)%inf
print((c*... | output | 1 | 40,666 | 12 | 81,333 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A sequence of n non-negative integers (n ≥ 2) a_1, a_2, ..., a_n is called good if for all i from 1 to n-1 the following condition holds true: $$$a_1 \: \& \: a_2 \: \& \: ... \: \& \: a_i = a_{... | instruction | 0 | 40,667 | 12 | 81,334 |
Yes | output | 1 | 40,667 | 12 | 81,335 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A sequence of n non-negative integers (n ≥ 2) a_1, a_2, ..., a_n is called good if for all i from 1 to n-1 the following condition holds true: $$$a_1 \: \& \: a_2 \: \& \: ... \: \& \: a_i = a_{... | instruction | 0 | 40,668 | 12 | 81,336 |
Yes | output | 1 | 40,668 | 12 | 81,337 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A sequence of n non-negative integers (n ≥ 2) a_1, a_2, ..., a_n is called good if for all i from 1 to n-1 the following condition holds true: $$$a_1 \: \& \: a_2 \: \& \: ... \: \& \: a_i = a_{... | instruction | 0 | 40,669 | 12 | 81,338 |
Yes | output | 1 | 40,669 | 12 | 81,339 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A sequence of n non-negative integers (n ≥ 2) a_1, a_2, ..., a_n is called good if for all i from 1 to n-1 the following condition holds true: $$$a_1 \: \& \: a_2 \: \& \: ... \: \& \: a_i = a_{... | instruction | 0 | 40,670 | 12 | 81,340 |
Yes | output | 1 | 40,670 | 12 | 81,341 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A sequence of n non-negative integers (n ≥ 2) a_1, a_2, ..., a_n is called good if for all i from 1 to n-1 the following condition holds true: $$$a_1 \: \& \: a_2 \: \& \: ... \: \& \: a_i = a_{... | instruction | 0 | 40,671 | 12 | 81,342 |
No | output | 1 | 40,671 | 12 | 81,343 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A sequence of n non-negative integers (n ≥ 2) a_1, a_2, ..., a_n is called good if for all i from 1 to n-1 the following condition holds true: $$$a_1 \: \& \: a_2 \: \& \: ... \: \& \: a_i = a_{... | instruction | 0 | 40,672 | 12 | 81,344 |
No | output | 1 | 40,672 | 12 | 81,345 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A sequence of n non-negative integers (n ≥ 2) a_1, a_2, ..., a_n is called good if for all i from 1 to n-1 the following condition holds true: $$$a_1 \: \& \: a_2 \: \& \: ... \: \& \: a_i = a_{... | instruction | 0 | 40,673 | 12 | 81,346 |
No | output | 1 | 40,673 | 12 | 81,347 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A sequence of n non-negative integers (n ≥ 2) a_1, a_2, ..., a_n is called good if for all i from 1 to n-1 the following condition holds true: $$$a_1 \: \& \: a_2 \: \& \: ... \: \& \: a_i = a_{... | instruction | 0 | 40,674 | 12 | 81,348 |
No | output | 1 | 40,674 | 12 | 81,349 |
Provide a correct Python 3 solution for this coding contest problem.
G --Derangement / Derangement
Story
Person D is doing research on permutations. At one point, D found a permutation class called "Derangement". "It's cool to have a perfect permutation !!! And it starts with D !!!", the person of D who had a crush ... | instruction | 0 | 41,165 | 12 | 82,330 |
"Correct Solution:
```
# -*- coding: utf-8 -*-
import sys
def input(): return sys.stdin.readline().strip()
def list2d(a, b, c): return [[c] * b for i in range(a)]
def list3d(a, b, c, d): return [[[d] * c for j in range(b)] for i in range(a)]
def list4d(a, b, c, d, e): return [[[[e] * d for j in range(c)] for j in ran... | output | 1 | 41,165 | 12 | 82,331 |
Provide a correct Python 3 solution for this coding contest problem.
Write a program of the Bubble Sort algorithm which sorts a sequence A in ascending order. The algorithm should be based on the following pseudocode:
BubbleSort(A)
1 for i = 0 to A.length-1
2 for j = A.length-1 downto i+1
3 if A[j] < A[j... | instruction | 0 | 41,170 | 12 | 82,340 |
"Correct Solution:
```
N = int(input())
*A, = map(int, input().split())
cnt = 0
for i in range(N-1, -1, -1):
for j in range(i):
if A[j] > A[j+1]:
A[j], A[j+1] = A[j+1], A[j]
cnt += 1
print(*A)
print(cnt)
``` | output | 1 | 41,170 | 12 | 82,341 |
Provide a correct Python 3 solution for this coding contest problem.
Write a program of the Bubble Sort algorithm which sorts a sequence A in ascending order. The algorithm should be based on the following pseudocode:
BubbleSort(A)
1 for i = 0 to A.length-1
2 for j = A.length-1 downto i+1
3 if A[j] < A[j... | instruction | 0 | 41,171 | 12 | 82,342 |
"Correct Solution:
```
n = int(input())
a = list(map(int,input().split()))
flag = True
ret = 0
while flag:
flag=False
for j in range(1,n)[::-1]:
if a[j-1] > a[j]:
a[j],a[j-1]=a[j-1],a[j]
flag=True
ret += 1
print(" ".join(map(str,a)))
print(ret)
``` | output | 1 | 41,171 | 12 | 82,343 |
Provide a correct Python 3 solution for this coding contest problem.
Write a program of the Bubble Sort algorithm which sorts a sequence A in ascending order. The algorithm should be based on the following pseudocode:
BubbleSort(A)
1 for i = 0 to A.length-1
2 for j = A.length-1 downto i+1
3 if A[j] < A[j... | instruction | 0 | 41,172 | 12 | 82,344 |
"Correct Solution:
```
n = int(input())
A = list(map(int, input().split()))
cnt = 0
flg = 1
while flg:
flg = 0
for i in range(n - 1, 0, -1):
if A[i] < A[i - 1]:
A[i], A[i - 1] = A[i - 1], A[i]
cnt += 1
flg = 1
print(' '.join(map(str, A)))
print(cnt)
``` | output | 1 | 41,172 | 12 | 82,345 |
Provide a correct Python 3 solution for this coding contest problem.
Write a program of the Bubble Sort algorithm which sorts a sequence A in ascending order. The algorithm should be based on the following pseudocode:
BubbleSort(A)
1 for i = 0 to A.length-1
2 for j = A.length-1 downto i+1
3 if A[j] < A[j... | instruction | 0 | 41,173 | 12 | 82,346 |
"Correct Solution:
```
N=int(input())
A=list(map(int,input().split()))
count=0
i=N-1
while i>0:
j=0
while j<i:
if A[N-1-j]<A[N-2-j]:
(A[N-1-j],A[N-2-j])=(A[N-2-j],A[N-1-j])
count+=1
#print(' '.join(map(str,A)))
j+=1
i-=1
print(' '.join(map(str,A)))
print(count)
``` | output | 1 | 41,173 | 12 | 82,347 |
Provide a correct Python 3 solution for this coding contest problem.
Write a program of the Bubble Sort algorithm which sorts a sequence A in ascending order. The algorithm should be based on the following pseudocode:
BubbleSort(A)
1 for i = 0 to A.length-1
2 for j = A.length-1 downto i+1
3 if A[j] < A[j... | instruction | 0 | 41,174 | 12 | 82,348 |
"Correct Solution:
```
n, data = int(input()), list(map(int, input().split()))
i, t = 0, 0
while i != n-1:
for j in range(n-1, i, -1):
if data[j-1] > data[j]:
data[j-1], data[j] = data[j], data[j-1]
t += 1
i += 1
print(" ".join(map(str, data)))
print(t)
``` | output | 1 | 41,174 | 12 | 82,349 |
Provide a correct Python 3 solution for this coding contest problem.
Write a program of the Bubble Sort algorithm which sorts a sequence A in ascending order. The algorithm should be based on the following pseudocode:
BubbleSort(A)
1 for i = 0 to A.length-1
2 for j = A.length-1 downto i+1
3 if A[j] < A[j... | instruction | 0 | 41,175 | 12 | 82,350 |
"Correct Solution:
```
N=int(input())
A=list(map(int,input().split()))[::-1]
flag=1
count=0
while flag:
flag=0
for i in range(N-1):
if A[i]<A[i+1]:
A[i],A[i+1]=A[i+1],A[i]
flag=1
count+=1
print(*A[::-1])
print(count)
``` | output | 1 | 41,175 | 12 | 82,351 |
Provide a correct Python 3 solution for this coding contest problem.
Write a program of the Bubble Sort algorithm which sorts a sequence A in ascending order. The algorithm should be based on the following pseudocode:
BubbleSort(A)
1 for i = 0 to A.length-1
2 for j = A.length-1 downto i+1
3 if A[j] < A[j... | instruction | 0 | 41,176 | 12 | 82,352 |
"Correct Solution:
```
n = int(input())
m = list(map(int, input().split()))
count = 0
flag = 1
while flag:
flag = 0
for j in range(n-1, 0, -1):
if m[j] < m[j-1]:
m[j], m[j-1] = m[j-1], m[j]
count += 1
flag = 1
print(" ".join(str(x) for x in m))
print(count)
``` | output | 1 | 41,176 | 12 | 82,353 |
Provide a correct Python 3 solution for this coding contest problem.
Write a program of the Bubble Sort algorithm which sorts a sequence A in ascending order. The algorithm should be based on the following pseudocode:
BubbleSort(A)
1 for i = 0 to A.length-1
2 for j = A.length-1 downto i+1
3 if A[j] < A[j... | instruction | 0 | 41,177 | 12 | 82,354 |
"Correct Solution:
```
N=int(input())
A=[int(i) for i in input().split()]
ans=0
flag=1
while flag:
flag=0
for j in range(1,N)[::-1]:
if A[j]<A[j-1]:
A[j],A[j-1]=A[j-1],A[j]
flag=1
ans+=1
print(" ".join([str(i) for i in A]))
print(ans)
``` | output | 1 | 41,177 | 12 | 82,355 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Write a program of the Bubble Sort algorithm which sorts a sequence A in ascending order. The algorithm should be based on the following pseudocode:
BubbleSort(A)
1 for i = 0 to A.length-1
2 ... | instruction | 0 | 41,178 | 12 | 82,356 |
Yes | output | 1 | 41,178 | 12 | 82,357 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Write a program of the Bubble Sort algorithm which sorts a sequence A in ascending order. The algorithm should be based on the following pseudocode:
BubbleSort(A)
1 for i = 0 to A.length-1
2 ... | instruction | 0 | 41,179 | 12 | 82,358 |
Yes | output | 1 | 41,179 | 12 | 82,359 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Write a program of the Bubble Sort algorithm which sorts a sequence A in ascending order. The algorithm should be based on the following pseudocode:
BubbleSort(A)
1 for i = 0 to A.length-1
2 ... | instruction | 0 | 41,180 | 12 | 82,360 |
Yes | output | 1 | 41,180 | 12 | 82,361 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Write a program of the Bubble Sort algorithm which sorts a sequence A in ascending order. The algorithm should be based on the following pseudocode:
BubbleSort(A)
1 for i = 0 to A.length-1
2 ... | instruction | 0 | 41,181 | 12 | 82,362 |
Yes | output | 1 | 41,181 | 12 | 82,363 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Write a program of the Bubble Sort algorithm which sorts a sequence A in ascending order. The algorithm should be based on the following pseudocode:
BubbleSort(A)
1 for i = 0 to A.length-1
2 ... | instruction | 0 | 41,182 | 12 | 82,364 |
No | output | 1 | 41,182 | 12 | 82,365 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Write a program of the Bubble Sort algorithm which sorts a sequence A in ascending order. The algorithm should be based on the following pseudocode:
BubbleSort(A)
1 for i = 0 to A.length-1
2 ... | instruction | 0 | 41,183 | 12 | 82,366 |
No | output | 1 | 41,183 | 12 | 82,367 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Write a program of the Bubble Sort algorithm which sorts a sequence A in ascending order. The algorithm should be based on the following pseudocode:
BubbleSort(A)
1 for i = 0 to A.length-1
2 ... | instruction | 0 | 41,184 | 12 | 82,368 |
No | output | 1 | 41,184 | 12 | 82,369 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Write a program of the Bubble Sort algorithm which sorts a sequence A in ascending order. The algorithm should be based on the following pseudocode:
BubbleSort(A)
1 for i = 0 to A.length-1
2 ... | instruction | 0 | 41,185 | 12 | 82,370 |
No | output | 1 | 41,185 | 12 | 82,371 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Let's call an array a_1, a_2, ..., a_m of nonnegative integer numbers good if a_1 + a_2 + ... + a_m = 2⋅(a_1 ⊕ a_2 ⊕ ... ⊕ a_m), where ⊕ denotes the [bitwise XOR operation](https://en.wikipedia.org/wiki/Bitwise_operation#XOR).
For example, ... | instruction | 0 | 41,349 | 12 | 82,698 |
Tags: bitmasks, constructive algorithms, math
Correct Solution:
```
t=int(input())
from math import *
while t>0:
t-=1
n=int(input())
a=[int(x) for x in input().split()]
p=list(bin(sum(a)))[2:]
s=sum(a)
x=0
for i in range(n):
x=x^a[i]
if sum(a)==2*x:
print(0)
... | output | 1 | 41,349 | 12 | 82,699 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Let's call an array a_1, a_2, ..., a_m of nonnegative integer numbers good if a_1 + a_2 + ... + a_m = 2⋅(a_1 ⊕ a_2 ⊕ ... ⊕ a_m), where ⊕ denotes the [bitwise XOR operation](https://en.wikipedia.org/wiki/Bitwise_operation#XOR).
For example, ... | instruction | 0 | 41,350 | 12 | 82,700 |
Tags: bitmasks, constructive algorithms, math
Correct Solution:
```
t = int(input())
for _ in range(t):
n = int(input())
arr = [int(i) for i in input().split()]
sum_arr = sum(arr)
xor_arr = 0
for i in range(n):
xor_arr = xor_arr ^ arr[i]
ans = []
ans.append(xor_arr)
y = sum_arr +... | output | 1 | 41,350 | 12 | 82,701 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Let's call an array a_1, a_2, ..., a_m of nonnegative integer numbers good if a_1 + a_2 + ... + a_m = 2⋅(a_1 ⊕ a_2 ⊕ ... ⊕ a_m), where ⊕ denotes the [bitwise XOR operation](https://en.wikipedia.org/wiki/Bitwise_operation#XOR).
For example, ... | instruction | 0 | 41,351 | 12 | 82,702 |
Tags: bitmasks, constructive algorithms, math
Correct Solution:
```
from collections import Counter,defaultdict,deque
import heapq as hq
from itertools import count, islice
#alph = 'abcdefghijklmnopqrstuvwxyz'
#from math import factorial as fact
#a,b = [int(x) for x in input().split()]
import math
import sys
input=sys... | output | 1 | 41,351 | 12 | 82,703 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Let's call an array a_1, a_2, ..., a_m of nonnegative integer numbers good if a_1 + a_2 + ... + a_m = 2⋅(a_1 ⊕ a_2 ⊕ ... ⊕ a_m), where ⊕ denotes the [bitwise XOR operation](https://en.wikipedia.org/wiki/Bitwise_operation#XOR).
For example, ... | instruction | 0 | 41,352 | 12 | 82,704 |
Tags: bitmasks, constructive algorithms, math
Correct Solution:
```
t=int(input())
while t>0:
n=int(input())
a=list(map(int,input().split()))
xor=0
s=0
for each in a:
xor=xor^each
s=s+each
if(s==2*xor):
print(0)
else:
print(2)
a.append(xor)
s=s... | output | 1 | 41,352 | 12 | 82,705 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Let's call an array a_1, a_2, ..., a_m of nonnegative integer numbers good if a_1 + a_2 + ... + a_m = 2⋅(a_1 ⊕ a_2 ⊕ ... ⊕ a_m), where ⊕ denotes the [bitwise XOR operation](https://en.wikipedia.org/wiki/Bitwise_operation#XOR).
For example, ... | instruction | 0 | 41,353 | 12 | 82,706 |
Tags: bitmasks, constructive algorithms, math
Correct Solution:
```
t=int(input())
for i in range(t):
n=int(input())
a=list(map(int,input().split()))
k=sum(a)
d=[0]*40
for j in range(n):
s='';l=a[j]
while l!=0:
s+=str(l%2)
l=l//2
for u in range(len(s))... | output | 1 | 41,353 | 12 | 82,707 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Let's call an array a_1, a_2, ..., a_m of nonnegative integer numbers good if a_1 + a_2 + ... + a_m = 2⋅(a_1 ⊕ a_2 ⊕ ... ⊕ a_m), where ⊕ denotes the [bitwise XOR operation](https://en.wikipedia.org/wiki/Bitwise_operation#XOR).
For example, ... | instruction | 0 | 41,354 | 12 | 82,708 |
Tags: bitmasks, constructive algorithms, math
Correct Solution:
```
for u in range(int(input())):
n=int(input())
l=list(map(int,input().split()))
x=0
s=sum(l)
for i in l:
x^=i
s=x+s
print(2)
print(x,s)
``` | output | 1 | 41,354 | 12 | 82,709 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Let's call an array a_1, a_2, ..., a_m of nonnegative integer numbers good if a_1 + a_2 + ... + a_m = 2⋅(a_1 ⊕ a_2 ⊕ ... ⊕ a_m), where ⊕ denotes the [bitwise XOR operation](https://en.wikipedia.org/wiki/Bitwise_operation#XOR).
For example, ... | instruction | 0 | 41,355 | 12 | 82,710 |
Tags: bitmasks, constructive algorithms, math
Correct Solution:
```
def proc_case(a):
sum = 0
xor = 0
for i in a:
sum += i
xor ^= i
if sum == xor * 2:
return 0, []
if xor == 0:
return 1, [sum]
return 2, [xor, xor+sum]
cases_num = int(input())
for _ in range(cases... | output | 1 | 41,355 | 12 | 82,711 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Let's call an array a_1, a_2, ..., a_m of nonnegative integer numbers good if a_1 + a_2 + ... + a_m = 2⋅(a_1 ⊕ a_2 ⊕ ... ⊕ a_m), where ⊕ denotes the [bitwise XOR operation](https://en.wikipedia.org/wiki/Bitwise_operation#XOR).
For example, ... | instruction | 0 | 41,356 | 12 | 82,712 |
Tags: bitmasks, constructive algorithms, math
Correct Solution:
```
t = int(input())
for i in range(t):
n = int(input())
a = list(map(int,input().split()))
res = 0
sa = 0
for i in a:
res ^= i
sa += i
if sa % 2:
mnum = (1 << 59) - 1
else:
mnum = (1<<59)
res... | output | 1 | 41,356 | 12 | 82,713 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let's call an array a_1, a_2, ..., a_m of nonnegative integer numbers good if a_1 + a_2 + ... + a_m = 2⋅(a_1 ⊕ a_2 ⊕ ... ⊕ a_m), where ⊕ denotes the [bitwise XOR operation](https://en.wikipedia.... | instruction | 0 | 41,357 | 12 | 82,714 |
Yes | output | 1 | 41,357 | 12 | 82,715 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let's call an array a_1, a_2, ..., a_m of nonnegative integer numbers good if a_1 + a_2 + ... + a_m = 2⋅(a_1 ⊕ a_2 ⊕ ... ⊕ a_m), where ⊕ denotes the [bitwise XOR operation](https://en.wikipedia.... | instruction | 0 | 41,358 | 12 | 82,716 |
Yes | output | 1 | 41,358 | 12 | 82,717 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let's call an array a_1, a_2, ..., a_m of nonnegative integer numbers good if a_1 + a_2 + ... + a_m = 2⋅(a_1 ⊕ a_2 ⊕ ... ⊕ a_m), where ⊕ denotes the [bitwise XOR operation](https://en.wikipedia.... | instruction | 0 | 41,359 | 12 | 82,718 |
Yes | output | 1 | 41,359 | 12 | 82,719 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let's call an array a_1, a_2, ..., a_m of nonnegative integer numbers good if a_1 + a_2 + ... + a_m = 2⋅(a_1 ⊕ a_2 ⊕ ... ⊕ a_m), where ⊕ denotes the [bitwise XOR operation](https://en.wikipedia.... | instruction | 0 | 41,360 | 12 | 82,720 |
Yes | output | 1 | 41,360 | 12 | 82,721 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let's call an array a_1, a_2, ..., a_m of nonnegative integer numbers good if a_1 + a_2 + ... + a_m = 2⋅(a_1 ⊕ a_2 ⊕ ... ⊕ a_m), where ⊕ denotes the [bitwise XOR operation](https://en.wikipedia.... | instruction | 0 | 41,361 | 12 | 82,722 |
No | output | 1 | 41,361 | 12 | 82,723 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let's call an array a_1, a_2, ..., a_m of nonnegative integer numbers good if a_1 + a_2 + ... + a_m = 2⋅(a_1 ⊕ a_2 ⊕ ... ⊕ a_m), where ⊕ denotes the [bitwise XOR operation](https://en.wikipedia.... | instruction | 0 | 41,362 | 12 | 82,724 |
No | output | 1 | 41,362 | 12 | 82,725 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let's call an array a_1, a_2, ..., a_m of nonnegative integer numbers good if a_1 + a_2 + ... + a_m = 2⋅(a_1 ⊕ a_2 ⊕ ... ⊕ a_m), where ⊕ denotes the [bitwise XOR operation](https://en.wikipedia.... | instruction | 0 | 41,363 | 12 | 82,726 |
No | output | 1 | 41,363 | 12 | 82,727 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let's call an array a_1, a_2, ..., a_m of nonnegative integer numbers good if a_1 + a_2 + ... + a_m = 2⋅(a_1 ⊕ a_2 ⊕ ... ⊕ a_m), where ⊕ denotes the [bitwise XOR operation](https://en.wikipedia.... | instruction | 0 | 41,364 | 12 | 82,728 |
No | output | 1 | 41,364 | 12 | 82,729 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The only difference between easy and hard versions is constraints.
You are given a sequence a consisting of n positive integers.
Let's define a three blocks palindrome as the sequence, consisting of at most two distinct elements (let these... | instruction | 0 | 41,397 | 12 | 82,794 |
Tags: binary search, brute force, data structures, dp, two pointers
Correct Solution:
```
import sys
# import bisect
# from collections import deque
Ri = lambda : [int(x) for x in sys.stdin.readline().split()]
ri = lambda : sys.stdin.readline().strip()
def input(): return sys.stdin.readline().strip()
def list2d(a, b... | output | 1 | 41,397 | 12 | 82,795 |
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