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.
Anu has created her own function f: f(x, y) = (x | y) - y where | denotes the [bitwise OR operation](https://en.wikipedia.org/wiki/Bitwise_operation#OR). For example, f(11, 6) = (11|6) - 6 = 15 - 6 = 9. It can be proved that for any nonnegat... | instruction | 0 | 98,747 | 12 | 197,494 |
Tags: brute force, greedy, math
Correct Solution:
```
"""
Satwik_Tiwari ;) .
20 june , 2020 - Tuesday
"""
#===============================================================================================
#importing some useful libraries.
from __future__ import division, print_function
from fractions import Fr... | output | 1 | 98,747 | 12 | 197,495 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Anu has created her own function f: f(x, y) = (x | y) - y where | denotes the [bitwise OR operation](https://en.wikipedia.org/wiki/Bitwise_operation#OR). For example, f(11, 6) = (11|6) - 6 = 15 - 6 = 9. It can be proved that for any nonnegat... | instruction | 0 | 98,748 | 12 | 197,496 |
Tags: brute force, greedy, math
Correct Solution:
```
n = int(input())
s = list(map(int, input().split()))
for i in range(30,-1,-1):
if sum(1 for x in s if x&(1<<i)) == 1:
s.sort(key = lambda x: -(x & (1<<i)))
break
print(*s)
``` | output | 1 | 98,748 | 12 | 197,497 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Anu has created her own function f: f(x, y) = (x | y) - y where | denotes the [bitwise OR operation](https://en.wikipedia.org/wiki/Bitwise_operation#OR). For example, f(11, 6) = (11|6) - 6 = 15 - 6 = 9. It can be proved that for any nonnegat... | instruction | 0 | 98,749 | 12 | 197,498 |
Tags: brute force, greedy, math
Correct Solution:
```
from math import log,ceil
def bitnot(n):
if n == 0:
return (1 << 31) - 1
return (1 << 31) - 1 - n
#print(bitnot(4))
n = int(input())
l = [int(i) for i in input().split()]
f = bitnot(l[0])
prefix = []
for i in l:
f &= bitnot(i)
prefix.app... | output | 1 | 98,749 | 12 | 197,499 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Anu has created her own function f: f(x, y) = (x | y) - y where | denotes the [bitwise OR operation](https://en.wikipedia.org/wiki/Bitwise_operation#OR). For example, f(11, 6) = (11|6) - 6 = 15 ... | instruction | 0 | 98,750 | 12 | 197,500 |
Yes | output | 1 | 98,750 | 12 | 197,501 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Anu has created her own function f: f(x, y) = (x | y) - y where | denotes the [bitwise OR operation](https://en.wikipedia.org/wiki/Bitwise_operation#OR). For example, f(11, 6) = (11|6) - 6 = 15 ... | instruction | 0 | 98,751 | 12 | 197,502 |
Yes | output | 1 | 98,751 | 12 | 197,503 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Anu has created her own function f: f(x, y) = (x | y) - y where | denotes the [bitwise OR operation](https://en.wikipedia.org/wiki/Bitwise_operation#OR). For example, f(11, 6) = (11|6) - 6 = 15 ... | instruction | 0 | 98,752 | 12 | 197,504 |
Yes | output | 1 | 98,752 | 12 | 197,505 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Anu has created her own function f: f(x, y) = (x | y) - y where | denotes the [bitwise OR operation](https://en.wikipedia.org/wiki/Bitwise_operation#OR). For example, f(11, 6) = (11|6) - 6 = 15 ... | instruction | 0 | 98,753 | 12 | 197,506 |
Yes | output | 1 | 98,753 | 12 | 197,507 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Anu has created her own function f: f(x, y) = (x | y) - y where | denotes the [bitwise OR operation](https://en.wikipedia.org/wiki/Bitwise_operation#OR). For example, f(11, 6) = (11|6) - 6 = 15 ... | instruction | 0 | 98,754 | 12 | 197,508 |
No | output | 1 | 98,754 | 12 | 197,509 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Anu has created her own function f: f(x, y) = (x | y) - y where | denotes the [bitwise OR operation](https://en.wikipedia.org/wiki/Bitwise_operation#OR). For example, f(11, 6) = (11|6) - 6 = 15 ... | instruction | 0 | 98,755 | 12 | 197,510 |
No | output | 1 | 98,755 | 12 | 197,511 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Anu has created her own function f: f(x, y) = (x | y) - y where | denotes the [bitwise OR operation](https://en.wikipedia.org/wiki/Bitwise_operation#OR). For example, f(11, 6) = (11|6) - 6 = 15 ... | instruction | 0 | 98,756 | 12 | 197,512 |
No | output | 1 | 98,756 | 12 | 197,513 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Anu has created her own function f: f(x, y) = (x | y) - y where | denotes the [bitwise OR operation](https://en.wikipedia.org/wiki/Bitwise_operation#OR). For example, f(11, 6) = (11|6) - 6 = 15 ... | instruction | 0 | 98,757 | 12 | 197,514 |
No | output | 1 | 98,757 | 12 | 197,515 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Recall that the sequence b is a a subsequence of the sequence a if b can be derived from a by removing zero or more elements without changing the order of the remaining elements. For example, if a=[1, 2, 1, 3, 1, 2, 1], then possible subsequ... | instruction | 0 | 98,774 | 12 | 197,548 |
Tags: dp, greedy, two pointers
Correct Solution:
```
def fun(n,l):
prev=l[0]
sum=[]
for i in range(1,n):
if prev>0 and l[i]<0:
sum.append(prev)
prev=l[i]
elif prev<0 and l[i]>0:
sum.append(prev)
prev = l[i]
elif prev<l[i]:
p... | output | 1 | 98,774 | 12 | 197,549 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Recall that the sequence b is a a subsequence of the sequence a if b can be derived from a by removing zero or more elements without changing the order of the remaining elements. For example, if a=[1, 2, 1, 3, 1, 2, 1], then possible subsequ... | instruction | 0 | 98,775 | 12 | 197,550 |
Tags: dp, greedy, two pointers
Correct Solution:
```
# import sys
# sys.stdin = open('input.txt', 'r')
# sys.stdout = open('output.txt', 'w')
for _ in range(int(input())):
n=int(input())
count_even=0
count_odd=0
li=[int(x) for x in input().split()]
ans=0
i=0
while(True):
if(i==n):
break
if(li[i]>0):
... | output | 1 | 98,775 | 12 | 197,551 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Recall that the sequence b is a a subsequence of the sequence a if b can be derived from a by removing zero or more elements without changing the order of the remaining elements. For example, if a=[1, 2, 1, 3, 1, 2, 1], then possible subsequ... | instruction | 0 | 98,776 | 12 | 197,552 |
Tags: dp, greedy, two pointers
Correct Solution:
```
for _ in range(int(input())):
n = int(input())
data = list(map(int, input().split()))
result = 0
if data[0] > 0:
sign = 1
else:
sign = -1
array = []
for x in data:
if sign == 1 and x > 0:
array.app... | output | 1 | 98,776 | 12 | 197,553 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Recall that the sequence b is a a subsequence of the sequence a if b can be derived from a by removing zero or more elements without changing the order of the remaining elements. For example, if a=[1, 2, 1, 3, 1, 2, 1], then possible subsequ... | instruction | 0 | 98,777 | 12 | 197,554 |
Tags: dp, greedy, two pointers
Correct Solution:
```
import math
import sys
from collections import defaultdict
from collections import Counter
from collections import deque
import bisect
input = iter(sys.stdin.buffer.read().decode().splitlines()).__next__
ilele = lambda: map(int,input().split())
alele = lambda: list(m... | output | 1 | 98,777 | 12 | 197,555 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Recall that the sequence b is a a subsequence of the sequence a if b can be derived from a by removing zero or more elements without changing the order of the remaining elements. For example, if a=[1, 2, 1, 3, 1, 2, 1], then possible subsequ... | instruction | 0 | 98,778 | 12 | 197,556 |
Tags: dp, greedy, two pointers
Correct Solution:
```
for _ in range(int(input())):
n=int(input())
ar=list(map(int,input().split()))
if(ar[0]>0):
ty='p'
else:
ty='n'
li=[]
ans=0
for i in range(n):
if(ar[i]>0):
if(ty=='p'):
li.append(ar[i])
... | output | 1 | 98,778 | 12 | 197,557 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Recall that the sequence b is a a subsequence of the sequence a if b can be derived from a by removing zero or more elements without changing the order of the remaining elements. For example, if a=[1, 2, 1, 3, 1, 2, 1], then possible subsequ... | instruction | 0 | 98,779 | 12 | 197,558 |
Tags: dp, greedy, two pointers
Correct Solution:
```
for _ in range(int(input())):
n = int(input())
lst = list(map(int,input().split()))
i = 0
ans = 0
while(i<n):
if(lst[i]>0):
j = i+1
maxPos = lst[i]
while(j<n and lst[j]>0):
maxPos = max(m... | output | 1 | 98,779 | 12 | 197,559 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Recall that the sequence b is a a subsequence of the sequence a if b can be derived from a by removing zero or more elements without changing the order of the remaining elements. For example, if a=[1, 2, 1, 3, 1, 2, 1], then possible subsequ... | instruction | 0 | 98,780 | 12 | 197,560 |
Tags: dp, greedy, two pointers
Correct Solution:
```
for _ in range(int(input())):
m=int(input())
l=list(map(int,input().split()))
q=[]
p=[]
i=0
res=0
while(i<m):
while(i<m and l[i]>0):
q.append(l[i])
i=i+1
#print(q)
while(i<m ... | output | 1 | 98,780 | 12 | 197,561 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Recall that the sequence b is a a subsequence of the sequence a if b can be derived from a by removing zero or more elements without changing the order of the remaining elements. For example, if a=[1, 2, 1, 3, 1, 2, 1], then possible subsequ... | instruction | 0 | 98,781 | 12 | 197,562 |
Tags: dp, greedy, two pointers
Correct Solution:
```
t = int(input())
for _ in range(t):
n = int(input())
a = list(map(int, input().split()))
ans = 0
pos = True if a[0] > 0 else False
mini = a[0]
for i in range(n):
if (a[i] > 0 and pos) or (a[i] < 0 and not pos):
mini = max(... | output | 1 | 98,781 | 12 | 197,563 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Recall that the sequence b is a a subsequence of the sequence a if b can be derived from a by removing zero or more elements without changing the order of the remaining elements. For example, if... | instruction | 0 | 98,782 | 12 | 197,564 |
Yes | output | 1 | 98,782 | 12 | 197,565 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Recall that the sequence b is a a subsequence of the sequence a if b can be derived from a by removing zero or more elements without changing the order of the remaining elements. For example, if... | instruction | 0 | 98,783 | 12 | 197,566 |
Yes | output | 1 | 98,783 | 12 | 197,567 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Recall that the sequence b is a a subsequence of the sequence a if b can be derived from a by removing zero or more elements without changing the order of the remaining elements. For example, if... | instruction | 0 | 98,784 | 12 | 197,568 |
Yes | output | 1 | 98,784 | 12 | 197,569 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Recall that the sequence b is a a subsequence of the sequence a if b can be derived from a by removing zero or more elements without changing the order of the remaining elements. For example, if... | instruction | 0 | 98,785 | 12 | 197,570 |
Yes | output | 1 | 98,785 | 12 | 197,571 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Recall that the sequence b is a a subsequence of the sequence a if b can be derived from a by removing zero or more elements without changing the order of the remaining elements. For example, if... | instruction | 0 | 98,786 | 12 | 197,572 |
No | output | 1 | 98,786 | 12 | 197,573 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Recall that the sequence b is a a subsequence of the sequence a if b can be derived from a by removing zero or more elements without changing the order of the remaining elements. For example, if... | instruction | 0 | 98,787 | 12 | 197,574 |
No | output | 1 | 98,787 | 12 | 197,575 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Recall that the sequence b is a a subsequence of the sequence a if b can be derived from a by removing zero or more elements without changing the order of the remaining elements. For example, if... | instruction | 0 | 98,788 | 12 | 197,576 |
No | output | 1 | 98,788 | 12 | 197,577 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Recall that the sequence b is a a subsequence of the sequence a if b can be derived from a by removing zero or more elements without changing the order of the remaining elements. For example, if... | instruction | 0 | 98,789 | 12 | 197,578 |
No | output | 1 | 98,789 | 12 | 197,579 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Igor had a sequence d_1, d_2, ..., d_n of integers. When Igor entered the classroom there was an integer x written on the blackboard.
Igor generated sequence p using the following algorithm:
1. initially, p = [x];
2. for each 1 ≤ i ≤... | instruction | 0 | 98,843 | 12 | 197,686 |
Tags: dp, math, matrices
Correct Solution:
```
import sys, io, os
if os.environ['USERNAME']=='kissz':
inp=open('in55.txt','r').readline
def debug(*args):
print(*args,file=sys.stderr)
else:
inp=io.BytesIO(os.read(0,os.fstat(0).st_size)).readline
def debug(*args):
pass
def mexp(size,powe... | output | 1 | 98,843 | 12 | 197,687 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Igor had a sequence d_1, d_2, ..., d_n of integers. When Igor entered the classroom there was an integer x written on the blackboard.
Igor generated sequence p using the following algorithm:
... | instruction | 0 | 98,844 | 12 | 197,688 |
No | output | 1 | 98,844 | 12 | 197,689 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Igor had a sequence d_1, d_2, ..., d_n of integers. When Igor entered the classroom there was an integer x written on the blackboard.
Igor generated sequence p using the following algorithm:
... | instruction | 0 | 98,845 | 12 | 197,690 |
No | output | 1 | 98,845 | 12 | 197,691 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Igor had a sequence d_1, d_2, ..., d_n of integers. When Igor entered the classroom there was an integer x written on the blackboard.
Igor generated sequence p using the following algorithm:
... | instruction | 0 | 98,846 | 12 | 197,692 |
No | output | 1 | 98,846 | 12 | 197,693 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Igor had a sequence d_1, d_2, ..., d_n of integers. When Igor entered the classroom there was an integer x written on the blackboard.
Igor generated sequence p using the following algorithm:
... | instruction | 0 | 98,847 | 12 | 197,694 |
No | output | 1 | 98,847 | 12 | 197,695 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The Greatest Secret Ever consists of n words, indexed by positive integers from 1 to n. The secret needs dividing between k Keepers (let's index them by positive integers from 1 to k), the i-th Keeper gets a non-empty set of words with numbe... | instruction | 0 | 98,928 | 12 | 197,856 |
Tags: constructive algorithms, implementation
Correct Solution:
```
n, k = map(int, input().split())
if n < 3 * k: print(-1)
else:
d = n // k - 1
t = list(str(i) + ' ' for i in range(1, k + 1))
print(''.join(t) + ''.join(i * d for i in t) + t[-1] * (n - (d + 1) * k))
``` | output | 1 | 98,928 | 12 | 197,857 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The Greatest Secret Ever consists of n words, indexed by positive integers from 1 to n. The secret needs dividing between k Keepers (let's index them by positive integers from 1 to k), the i-th Keeper gets a non-empty set of words with numbe... | instruction | 0 | 98,929 | 12 | 197,858 |
Tags: constructive algorithms, implementation
Correct Solution:
```
n, k = map(int, input().split())
if n // k < 3:
print(-1)
else:
v = [0] * n
for i in range(k):
v[2 * i] = v[2 * i + 1] = i + 1
for i in range(2 * k, n):
v[i] = (i - 2 * k) % k + 1
print(' '.join(map(str, v)))
``` | output | 1 | 98,929 | 12 | 197,859 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The Greatest Secret Ever consists of n words, indexed by positive integers from 1 to n. The secret needs dividing between k Keepers (let's index them by positive integers from 1 to k), the i-th Keeper gets a non-empty set of words with numbe... | instruction | 0 | 98,930 | 12 | 197,860 |
Tags: constructive algorithms, implementation
Correct Solution:
```
# ------------------- fast io --------------------
import os
import sys
from io import BytesIO, IOBase
BUFSIZE = 8192
class FastIO(IOBase):
newlines = 0
def __init__(self, file):
self._fd = file.fileno()
self.buffer = BytesI... | output | 1 | 98,930 | 12 | 197,861 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The Greatest Secret Ever consists of n words, indexed by positive integers from 1 to n. The secret needs dividing between k Keepers (let's index them by positive integers from 1 to k), the i-th Keeper gets a non-empty set of words with numbe... | instruction | 0 | 98,931 | 12 | 197,862 |
Tags: constructive algorithms, implementation
Correct Solution:
```
n,k=map(int,input().split())
if n//k <3:
print("-1")
exit()
ans=list()
for i in range(n):
if i<2*k:
ans.append(i // 2 + 1)
elif (i//k)%2==0:
ans.append(i%k+1)
else :
ans.append(k-i%k)
print(*ans)
``` | output | 1 | 98,931 | 12 | 197,863 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The Greatest Secret Ever consists of n words, indexed by positive integers from 1 to n. The secret needs dividing between k Keepers (let's index them by positive integers from 1 to k), the i-th Keeper gets a non-empty set of words with numbe... | instruction | 0 | 98,932 | 12 | 197,864 |
Tags: constructive algorithms, implementation
Correct Solution:
```
n, m = map(int, input().split())
if n // m < 3:
print(-1)
exit()
res = []
for i in range(m):
res.append(i+1)
res.append(i+1)
for i in range(m):
res.append(i+1)
print(' '.join(map(str, res)), '1 ' * (n - 3*m))
``` | output | 1 | 98,932 | 12 | 197,865 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The Greatest Secret Ever consists of n words, indexed by positive integers from 1 to n. The secret needs dividing between k Keepers (let's index them by positive integers from 1 to k), the i-th Keeper gets a non-empty set of words with numbe... | instruction | 0 | 98,933 | 12 | 197,866 |
Tags: constructive algorithms, implementation
Correct Solution:
```
import sys
n, k = map(int, input().split())
if k * 3 > n:
print(-1)
exit(0)
ans = [1] * n
if n == k * 3 and n % 2 == 1:
if n == 3:
print(-1)
exit(0)
l = n - (n % 6) - 6
l = max(0, l)
filled = 0
... | output | 1 | 98,933 | 12 | 197,867 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The Greatest Secret Ever consists of n words, indexed by positive integers from 1 to n. The secret needs dividing between k Keepers (let's index them by positive integers from 1 to k), the i-th Keeper gets a non-empty set of words with numbe... | instruction | 0 | 98,934 | 12 | 197,868 |
Tags: constructive algorithms, implementation
Correct Solution:
```
#------------------------template--------------------------#
import os
import sys
from math import *
from collections import *
from fractions import *
from bisect import *
from heapq import*
from io import BytesIO, IOBase
def vsInput():
sys.stdin =... | output | 1 | 98,934 | 12 | 197,869 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The Greatest Secret Ever consists of n words, indexed by positive integers from 1 to n. The secret needs dividing between k Keepers (let's index them by positive integers from 1 to k), the i-th Keeper gets a non-empty set of words with numbe... | instruction | 0 | 98,935 | 12 | 197,870 |
Tags: constructive algorithms, implementation
Correct Solution:
```
import sys
n ,k = map(int, input().split())
if n // k < 3 or k == 1:
print(-1)
exit()
num = 1
output = []
for i in range(k):
for j in range(2):
output.append(str(i+1))
num = num + 1
l = num + k
for i in range(k):
out... | output | 1 | 98,935 | 12 | 197,871 |
Provide tags and a correct Python 3 solution for this coding contest problem.
At the children's day, the child came to Picks's house, and messed his house up. Picks was angry at him. A lot of important things were lost, in particular the favorite set of Picks.
Fortunately, Picks remembers something about his set S:
... | instruction | 0 | 99,007 | 12 | 198,014 |
Tags: bitmasks, greedy, implementation, sortings
Correct Solution:
```
#!/usr/bin/env python
import os
import sys
from io import BytesIO, IOBase
#from bisect import bisect_left as bl #c++ lowerbound bl(array,element)
#from bisect import bisect_right as br #c++ upperbound br(array,element)
... | output | 1 | 99,007 | 12 | 198,015 |
Provide tags and a correct Python 3 solution for this coding contest problem.
At the children's day, the child came to Picks's house, and messed his house up. Picks was angry at him. A lot of important things were lost, in particular the favorite set of Picks.
Fortunately, Picks remembers something about his set S:
... | instruction | 0 | 99,012 | 12 | 198,024 |
Tags: bitmasks, greedy, implementation, sortings
Correct Solution:
```
s,t = map(int,input().split())
c = {}
arr = []
for i in range(t,0,-1):
l = 0
tmp = i
while tmp%2==0:
tmp /= 2
l += 1
if 2**l<=s:
s -= 2**l
arr.append(i)
if s==0:
print(len(arr))
print(*arr)
els... | output | 1 | 99,012 | 12 | 198,025 |
Provide a correct Python 3 solution for this coding contest problem.
Given are a permutation p_1, p_2, \dots, p_N of (1, 2, ..., N) and an integer K. Maroon performs the following operation for i = 1, 2, \dots, N - K + 1 in this order:
* Shuffle p_i, p_{i + 1}, \dots, p_{i + K - 1} uniformly randomly.
Find the exp... | instruction | 0 | 99,255 | 12 | 198,510 |
"Correct Solution:
```
class BIT: #0-indexed
__slots__ = ["size", "tree","depth","n0"]
def __init__(self, n):
self.size = n
self.tree = [0]*(n+1)
self.depth = n.bit_length()
self.n0 = 1<<self.depth
def get_sum(self, i): #a_0 + ... + a_{i} #閉区間
s = 0; i += 1
w... | output | 1 | 99,255 | 12 | 198,511 |
Provide a correct Python 3 solution for this coding contest problem.
Given are a permutation p_1, p_2, \dots, p_N of (1, 2, ..., N) and an integer K. Maroon performs the following operation for i = 1, 2, \dots, N - K + 1 in this order:
* Shuffle p_i, p_{i + 1}, \dots, p_{i + K - 1} uniformly randomly.
Find the exp... | instruction | 0 | 99,256 | 12 | 198,512 |
"Correct Solution:
```
class SegmentTree():
def __init__(self, init, unit, f):
self.unit = unit
self.f = f
if type(init) == int:
self.n = init
# self.n = 1 << (self.n - 1).bit_length()
self.X = [unit] * (self.n * 2)
else:
self.n = len(i... | output | 1 | 99,256 | 12 | 198,513 |
Provide a correct Python 3 solution for this coding contest problem.
Given are a permutation p_1, p_2, \dots, p_N of (1, 2, ..., N) and an integer K. Maroon performs the following operation for i = 1, 2, \dots, N - K + 1 in this order:
* Shuffle p_i, p_{i + 1}, \dots, p_{i + K - 1} uniformly randomly.
Find the exp... | instruction | 0 | 99,257 | 12 | 198,514 |
"Correct Solution:
```
class BIT: #0-indexed
__slots__ = ["size", "tree","depth","n0"]
def __init__(self, n):
self.size = n
self.tree = [0]*(n+1)
self.depth = n.bit_length()
self.n0 = 1<<self.depth
def get_sum(self, i): #a_0 + ... + a_{i} #閉区間
s = 0; i += 1
w... | output | 1 | 99,257 | 12 | 198,515 |
Provide a correct Python 3 solution for this coding contest problem.
Given are a permutation p_1, p_2, \dots, p_N of (1, 2, ..., N) and an integer K. Maroon performs the following operation for i = 1, 2, \dots, N - K + 1 in this order:
* Shuffle p_i, p_{i + 1}, \dots, p_{i + K - 1} uniformly randomly.
Find the exp... | instruction | 0 | 99,258 | 12 | 198,516 |
"Correct Solution:
```
class SegmentTree:
def __init__(self, data, default=0, func=max):
"""initialize the segment tree with data"""
self._default = default
self._func = func
self._len = len(data)
self._size = _size = 1 << (self._len - 1).bit_length()
self.data = [de... | output | 1 | 99,258 | 12 | 198,517 |
Provide a correct Python 3 solution for this coding contest problem.
Given are a permutation p_1, p_2, \dots, p_N of (1, 2, ..., N) and an integer K. Maroon performs the following operation for i = 1, 2, \dots, N - K + 1 in this order:
* Shuffle p_i, p_{i + 1}, \dots, p_{i + K - 1} uniformly randomly.
Find the exp... | instruction | 0 | 99,259 | 12 | 198,518 |
"Correct Solution:
```
import sys
readline = sys.stdin.buffer.readline
mod=998244353
class BIT:
def __init__(self,n):
self.n=n
self.buf=[0]*n
def add(self,i,v):
buf=self.buf
while i<n:
buf[i]+=v
if buf[i]>=mod:
buf[i]-=mod
i+=(i+1)&(-i-1)
def get(self,i):
buf=self.buf
res=0
while i>=... | output | 1 | 99,259 | 12 | 198,519 |
Provide a correct Python 3 solution for this coding contest problem.
Given are a permutation p_1, p_2, \dots, p_N of (1, 2, ..., N) and an integer K. Maroon performs the following operation for i = 1, 2, \dots, N - K + 1 in this order:
* Shuffle p_i, p_{i + 1}, \dots, p_{i + K - 1} uniformly randomly.
Find the exp... | instruction | 0 | 99,260 | 12 | 198,520 |
"Correct Solution:
```
import sys
readline = sys.stdin.readline
class BIT:
#1-indexed
def __init__(self, n):
self.size = n
self.tree = [0] * (n + 1)
self.p = 2**(n.bit_length() - 1)
self.dep = n.bit_length()
def get(self, i):
s = 0
while i > 0:
s ... | output | 1 | 99,260 | 12 | 198,521 |
Provide tags and a correct Python 3 solution for this coding contest problem.
A sequence a_1, a_2, ..., a_n is called good if, for each element a_i, there exists an element a_j (i ≠ j) such that a_i+a_j is a power of two (that is, 2^d for some non-negative integer d).
For example, the following sequences are good:
... | instruction | 0 | 99,460 | 12 | 198,920 |
Tags: brute force, greedy, implementation
Correct Solution:
```
import sys, heapq
def binary(num):
left = 0
right = n
while left < right:
mid = (left + right) // 2
if arr[mid] < num:
left = mid + 1
elif arr[mid] > num:
right = mid
else:
re... | output | 1 | 99,460 | 12 | 198,921 |
Provide tags and a correct Python 3 solution for this coding contest problem.
A sequence a_1, a_2, ..., a_n is called good if, for each element a_i, there exists an element a_j (i ≠ j) such that a_i+a_j is a power of two (that is, 2^d for some non-negative integer d).
For example, the following sequences are good:
... | instruction | 0 | 99,461 | 12 | 198,922 |
Tags: brute force, greedy, implementation
Correct Solution:
```
import collections
int(input())
values = [int(i) for i in input().split()]
li = [2**i for i in range(30, 0, -1)]
ss = collections.Counter(values)
count = 0
for value in values:
options = []
for item in li:
diff = item - value
if... | output | 1 | 99,461 | 12 | 198,923 |
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