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.
Shubham has an array a of size n, and wants to select exactly x elements from it, such that their sum is odd. These elements do not have to be consecutive. The elements of the array are not guaranteed to be distinct.
Tell him whether he can... | instruction | 0 | 49,835 | 12 | 99,670 |
Tags: brute force, implementation, math
Correct Solution:
```
t = int(input())
for _ in range(t):
n,x = map(int,input().split())
l = list(map(int,input().split()))
even = 0
odd = 0
for num in l:
if num%2 == 0:
even += 1
else:
odd += 1
temp = 1
flag = ... | output | 1 | 49,835 | 12 | 99,671 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Shubham has an array a of size n, and wants to select exactly x elements from it, such that their sum is odd. These elements do not have to be consecutive. The elements of the array are not guaranteed to be distinct.
Tell him whether he can... | instruction | 0 | 49,836 | 12 | 99,672 |
Tags: brute force, implementation, math
Correct Solution:
```
# 1 + 2 = 3
# 2 + 2 = 4
# 5 + 5 = 10
#
#
for i in range(int(input())):
nechot = []
chot = []
n,x = map(int,input().split())
massive = list(map(int,input().split()))
for j in massive:
if j % 2 !=0:
nechot.append(j)
else:
chot.append(j)
... | output | 1 | 49,836 | 12 | 99,673 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Shubham has an array a of size n, and wants to select exactly x elements from it, such that their sum is odd. These elements do not have to be consecutive. The elements of the array are not guaranteed to be distinct.
Tell him whether he can... | instruction | 0 | 49,837 | 12 | 99,674 |
Tags: brute force, implementation, math
Correct Solution:
```
t = int(input())
for _ in range(t):
n, x = list(map(int, input().split()))
a = list(map(int, input().split()))
odd = 0
even = 0
for i in range(n):
if a[i] % 2 == 0:
even += 1
else: odd += 1
if odd == 0:
... | output | 1 | 49,837 | 12 | 99,675 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Shubham has an array a of size n, and wants to select exactly x elements from it, such that their sum is odd. These elements do not have to be consecutive. The elements of the array are not guaranteed to be distinct.
Tell him whether he can... | instruction | 0 | 49,838 | 12 | 99,676 |
Tags: brute force, implementation, math
Correct Solution:
```
for _ in range(int(input())):
n, x = map(int, input().split())
a = [*map(int, input().split())]
evens= sum(1 for i in a if i%2==0)
odds = n - evens
ans = 'NO'
for i in range(x):
if i <= evens and x-i <= odds and (x-i)%2 == 1:
... | output | 1 | 49,838 | 12 | 99,677 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Shubham has an array a of size n, and wants to select exactly x elements from it, such that their sum is odd. These elements do not have to be consecutive. The elements of the array are not guaranteed to be distinct.
Tell him whether he can... | instruction | 0 | 49,839 | 12 | 99,678 |
Tags: brute force, implementation, math
Correct Solution:
```
import os
### START FAST IO ###
os_input = os.read(0, int(1e7)).split()
os_input_pos = -1
answer_list = []
def read_s():
global os_input_pos
os_input_pos += 1
return os_input[os_input_pos].decode()
def read_i():
return int(read_s())
def write... | output | 1 | 49,839 | 12 | 99,679 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Shubham has an array a of size n, and wants to select exactly x elements from it, such that their sum is odd. These elements do not have to be consecutive. The elements of the array are not guaranteed to be distinct.
Tell him whether he can... | instruction | 0 | 49,840 | 12 | 99,680 |
Tags: brute force, implementation, math
Correct Solution:
```
t = int(input())
for _ in range(t):
n,x = map(int,input().split())
arr = list(map(int,input().split()))
odds = len([i for i in arr if i%2!=0])
evens = len(arr) - odds
yes = False
for i in range(1,odds+1,2):
if i>x:
... | output | 1 | 49,840 | 12 | 99,681 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Shubham has an array a of size n, and wants to select exactly x elements from it, such that their sum is odd. These elements do not have to be consecutive. The elements of the array are not guaranteed to be distinct.
Tell him whether he can... | instruction | 0 | 49,841 | 12 | 99,682 |
Tags: brute force, implementation, math
Correct Solution:
```
from sys import stdin, stdout
def find2(arr,N,X):
a,b=0,0
for i in arr:
if(i%2): a+=1
else: b+=1
while((X%2==0 or X>a) and b>0):
X-=1
b-=1
if X%2==0 or X>a: return 'No'
return 'Yes'
def find(arr,N,X):
... | output | 1 | 49,841 | 12 | 99,683 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Shubham has an array a of size n, and wants to select exactly x elements from it, such that their sum is odd. These elements do not have to be consecutive. The elements of the array are not guar... | instruction | 0 | 49,842 | 12 | 99,684 |
Yes | output | 1 | 49,842 | 12 | 99,685 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Shubham has an array a of size n, and wants to select exactly x elements from it, such that their sum is odd. These elements do not have to be consecutive. The elements of the array are not guar... | instruction | 0 | 49,843 | 12 | 99,686 |
Yes | output | 1 | 49,843 | 12 | 99,687 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Shubham has an array a of size n, and wants to select exactly x elements from it, such that their sum is odd. These elements do not have to be consecutive. The elements of the array are not guar... | instruction | 0 | 49,844 | 12 | 99,688 |
Yes | output | 1 | 49,844 | 12 | 99,689 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Shubham has an array a of size n, and wants to select exactly x elements from it, such that their sum is odd. These elements do not have to be consecutive. The elements of the array are not guar... | instruction | 0 | 49,845 | 12 | 99,690 |
Yes | output | 1 | 49,845 | 12 | 99,691 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Shubham has an array a of size n, and wants to select exactly x elements from it, such that their sum is odd. These elements do not have to be consecutive. The elements of the array are not guar... | instruction | 0 | 49,846 | 12 | 99,692 |
No | output | 1 | 49,846 | 12 | 99,693 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Shubham has an array a of size n, and wants to select exactly x elements from it, such that their sum is odd. These elements do not have to be consecutive. The elements of the array are not guar... | instruction | 0 | 49,847 | 12 | 99,694 |
No | output | 1 | 49,847 | 12 | 99,695 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Shubham has an array a of size n, and wants to select exactly x elements from it, such that their sum is odd. These elements do not have to be consecutive. The elements of the array are not guar... | instruction | 0 | 49,848 | 12 | 99,696 |
No | output | 1 | 49,848 | 12 | 99,697 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Shubham has an array a of size n, and wants to select exactly x elements from it, such that their sum is odd. These elements do not have to be consecutive. The elements of the array are not guar... | instruction | 0 | 49,849 | 12 | 99,698 |
No | output | 1 | 49,849 | 12 | 99,699 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Let a_1, …, a_n be an array of n positive integers. In one operation, you can choose an index i such that a_i = i, and remove a_i from the array (after the removal, the remaining parts are concatenated).
The weight of a is defined as the ma... | instruction | 0 | 49,850 | 12 | 99,700 |
Tags: binary search, constructive algorithms, data structures, greedy, two pointers
Correct Solution:
```
mod = 1000000007
eps = 10**-9
def main():
import sys
input = sys.stdin.readline
class Bit:
def __init__(self, n):
self.size = n
self.tree = [0] * (n + 1)
def ... | output | 1 | 49,850 | 12 | 99,701 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Let a_1, …, a_n be an array of n positive integers. In one operation, you can choose an index i such that a_i = i, and remove a_i from the array (after the removal, the remaining parts are concatenated).
The weight of a is defined as the ma... | instruction | 0 | 49,851 | 12 | 99,702 |
Tags: binary search, constructive algorithms, data structures, greedy, two pointers
Correct Solution:
```
n,q = map(int,input().split())
a = list(map(int,input().split()))
a = [i-a[i]+1 for i in range(n)]
Q = [[] for _ in range(n)]
ans = [-1]*q
for _ in range(q):
L,R = map(int,input().split())
R = n-1-R
Q... | output | 1 | 49,851 | 12 | 99,703 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Let a_1, …, a_n be an array of n positive integers. In one operation, you can choose an index i such that a_i = i, and remove a_i from the array (after the removal, the remaining parts are concatenated).
The weight of a is defined as the ma... | instruction | 0 | 49,852 | 12 | 99,704 |
Tags: binary search, constructive algorithms, data structures, greedy, two pointers
Correct Solution:
```
# 1 based indexing
class Fenwick:
def __init__(self, size):
self.size = size
self.tree = [0] * (size + 1)
def add(self, idx, val):
idx = int(idx)
while idx <= self.size:
self.tree[idx] += val
idx +=... | output | 1 | 49,852 | 12 | 99,705 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Let a_1, …, a_n be an array of n positive integers. In one operation, you can choose an index i such that a_i = i, and remove a_i from the array (after the removal, the remaining parts are concatenated).
The weight of a is defined as the ma... | instruction | 0 | 49,853 | 12 | 99,706 |
Tags: binary search, constructive algorithms, data structures, greedy, two pointers
Correct Solution:
```
class Fenwick:
def __init__(self, size):
self.size = size
self.tree = [0] * (size + 1)
def add(self, idx, val):
idx = int(idx)
while idx <= self.size:
self.tree[idx] += val
idx += idx & (-idx)
def ... | output | 1 | 49,853 | 12 | 99,707 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Let a_1, …, a_n be an array of n positive integers. In one operation, you can choose an index i such that a_i = i, and remove a_i from the array (after the removal, the remaining parts are concatenated).
The weight of a is defined as the ma... | instruction | 0 | 49,854 | 12 | 99,708 |
Tags: binary search, constructive algorithms, data structures, greedy, two pointers
Correct Solution:
```
'''explained excellently in editorial'''
mod = 1000000007
eps = 10**-9
def main():
import sys
input = sys.stdin.readline
class Bit:
def __init__(self, n):
self.size = n
... | output | 1 | 49,854 | 12 | 99,709 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Let a_1, …, a_n be an array of n positive integers. In one operation, you can choose an index i such that a_i = i, and remove a_i from the array (after the removal, the remaining parts are concatenated).
The weight of a is defined as the ma... | instruction | 0 | 49,855 | 12 | 99,710 |
Tags: binary search, constructive algorithms, data structures, greedy, two pointers
Correct Solution:
```
from bisect import *
from collections import *
from math import gcd,ceil,sqrt,floor,inf
from heapq import *
from itertools import *
from operator import add,mul,sub,xor,truediv,floordiv
from functools import *
#--... | output | 1 | 49,855 | 12 | 99,711 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Let a_1, …, a_n be an array of n positive integers. In one operation, you can choose an index i such that a_i = i, and remove a_i from the array (after the removal, the remaining parts are concatenated).
The weight of a is defined as the ma... | instruction | 0 | 49,856 | 12 | 99,712 |
Tags: binary search, constructive algorithms, data structures, greedy, two pointers
Correct Solution:
```
from sys import stdin
def bitadd(a,w,bit):
x = a
while x <= (len(bit)-1):
bit[x] += w
x += x & (-1 * x)
def bitsum(a,bit):
ret = 0
x = a
while x > 0:
ret += bit[x]... | output | 1 | 49,856 | 12 | 99,713 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Let a_1, …, a_n be an array of n positive integers. In one operation, you can choose an index i such that a_i = i, and remove a_i from the array (after the removal, the remaining parts are concatenated).
The weight of a is defined as the ma... | instruction | 0 | 49,857 | 12 | 99,714 |
Tags: binary search, constructive algorithms, data structures, greedy, two pointers
Correct Solution:
```
import sys
sys.setrecursionlimit(10**5)
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(): re... | output | 1 | 49,857 | 12 | 99,715 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let a_1, …, a_n be an array of n positive integers. In one operation, you can choose an index i such that a_i = i, and remove a_i from the array (after the removal, the remaining parts are conca... | instruction | 0 | 49,858 | 12 | 99,716 |
Yes | output | 1 | 49,858 | 12 | 99,717 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let a_1, …, a_n be an array of n positive integers. In one operation, you can choose an index i such that a_i = i, and remove a_i from the array (after the removal, the remaining parts are conca... | instruction | 0 | 49,859 | 12 | 99,718 |
Yes | output | 1 | 49,859 | 12 | 99,719 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let a_1, …, a_n be an array of n positive integers. In one operation, you can choose an index i such that a_i = i, and remove a_i from the array (after the removal, the remaining parts are conca... | instruction | 0 | 49,860 | 12 | 99,720 |
Yes | output | 1 | 49,860 | 12 | 99,721 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let a_1, …, a_n be an array of n positive integers. In one operation, you can choose an index i such that a_i = i, and remove a_i from the array (after the removal, the remaining parts are conca... | instruction | 0 | 49,861 | 12 | 99,722 |
Yes | output | 1 | 49,861 | 12 | 99,723 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let a_1, …, a_n be an array of n positive integers. In one operation, you can choose an index i such that a_i = i, and remove a_i from the array (after the removal, the remaining parts are conca... | instruction | 0 | 49,862 | 12 | 99,724 |
No | output | 1 | 49,862 | 12 | 99,725 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let a_1, …, a_n be an array of n positive integers. In one operation, you can choose an index i such that a_i = i, and remove a_i from the array (after the removal, the remaining parts are conca... | instruction | 0 | 49,863 | 12 | 99,726 |
No | output | 1 | 49,863 | 12 | 99,727 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let a_1, …, a_n be an array of n positive integers. In one operation, you can choose an index i such that a_i = i, and remove a_i from the array (after the removal, the remaining parts are conca... | instruction | 0 | 49,864 | 12 | 99,728 |
No | output | 1 | 49,864 | 12 | 99,729 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let a_1, …, a_n be an array of n positive integers. In one operation, you can choose an index i such that a_i = i, and remove a_i from the array (after the removal, the remaining parts are conca... | instruction | 0 | 49,865 | 12 | 99,730 |
No | output | 1 | 49,865 | 12 | 99,731 |
Provide tags and a correct Python 3 solution for this coding contest problem.
This is the easy version of the problem. The difference between the versions is in the constraints on the array elements. You can make hacks only if all versions of the problem are solved.
You are given an array [a_1, a_2, ..., a_n].
Your... | instruction | 0 | 49,866 | 12 | 99,732 |
Tags: data structures, greedy
Correct Solution:
```
import sys
input = sys.stdin.buffer.readline
def prog():
n = int(input())
a = list(map(int,input().split()))
freq = [0]*101
for i in range(n):
freq[a[i]] += 1
mx = max(freq)
amt = freq.count(mx)
if amt >= 2:
print... | output | 1 | 49,866 | 12 | 99,733 |
Provide tags and a correct Python 3 solution for this coding contest problem.
This is the easy version of the problem. The difference between the versions is in the constraints on the array elements. You can make hacks only if all versions of the problem are solved.
You are given an array [a_1, a_2, ..., a_n].
Your... | instruction | 0 | 49,867 | 12 | 99,734 |
Tags: data structures, greedy
Correct Solution:
```
'''
Auther: ghoshashis545 Ashis Ghosh
College: jalpaiguri Govt Enggineering College
'''
from os import path
import sys
from heapq import heappush,heappop
from functools import cmp_to_key as ctk
from collections import deque,Counter,defaultdict as dd
from bis... | output | 1 | 49,867 | 12 | 99,735 |
Provide tags and a correct Python 3 solution for this coding contest problem.
This is the easy version of the problem. The difference between the versions is in the constraints on the array elements. You can make hacks only if all versions of the problem are solved.
You are given an array [a_1, a_2, ..., a_n].
Your... | instruction | 0 | 49,868 | 12 | 99,736 |
Tags: data structures, greedy
Correct Solution:
```
import sys
from collections import defaultdict, Counter
import sys
import os
from io import BytesIO, IOBase
#Fast IO Region
BUFSIZE = 8192
class FastIO(IOBase):
newlines = 0
def __init__(self, file):
self._fd = file.fileno()
self.buffer = Byte... | output | 1 | 49,868 | 12 | 99,737 |
Provide tags and a correct Python 3 solution for this coding contest problem.
This is the easy version of the problem. The difference between the versions is in the constraints on the array elements. You can make hacks only if all versions of the problem are solved.
You are given an array [a_1, a_2, ..., a_n].
Your... | instruction | 0 | 49,869 | 12 | 99,738 |
Tags: data structures, greedy
Correct Solution:
```
n=int(input())
arr=list(map(int,input().split()))
freq=[0]*(101)
for i in arr:freq[i]+=1
maxx=max(freq)
amtOFmaxx=freq.count(maxx)
if amtOFmaxx>=2:print(n)
else:
must_apper=freq.index(maxx)
ans=0
for j in range(1,101):
if j==must_apper:
continue
fi... | output | 1 | 49,869 | 12 | 99,739 |
Provide tags and a correct Python 3 solution for this coding contest problem.
This is the easy version of the problem. The difference between the versions is in the constraints on the array elements. You can make hacks only if all versions of the problem are solved.
You are given an array [a_1, a_2, ..., a_n].
Your... | instruction | 0 | 49,870 | 12 | 99,740 |
Tags: data structures, greedy
Correct Solution:
```
from collections import Counter
n = int(input())
A = list(map(int, input().split()))
cnt = Counter(A)
maxv = max(cnt.values())
x = [c for c in cnt if cnt[c] == maxv]
if len(x) > 1:
print(n)
else:
x = x[0]
ans = 0
for c in cnt:
if c == x: contin... | output | 1 | 49,870 | 12 | 99,741 |
Provide tags and a correct Python 3 solution for this coding contest problem.
This is the easy version of the problem. The difference between the versions is in the constraints on the array elements. You can make hacks only if all versions of the problem are solved.
You are given an array [a_1, a_2, ..., a_n].
Your... | instruction | 0 | 49,871 | 12 | 99,742 |
Tags: data structures, greedy
Correct Solution:
```
# Legends Always Come Up with Solution
# Author: Manvir Singh
import os
from io import BytesIO, IOBase
import sys
from collections import defaultdict, deque, Counter
from bisect import *
from math import sqrt, pi, ceil, log, inf,gcd
from itertools import permutations... | output | 1 | 49,871 | 12 | 99,743 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
This is the easy version of the problem. The difference between the versions is in the constraints on the array elements. You can make hacks only if all versions of the problem are solved.
You ... | instruction | 0 | 49,872 | 12 | 99,744 |
No | output | 1 | 49,872 | 12 | 99,745 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
This is the easy version of the problem. The difference between the versions is in the constraints on the array elements. You can make hacks only if all versions of the problem are solved.
You ... | instruction | 0 | 49,873 | 12 | 99,746 |
No | output | 1 | 49,873 | 12 | 99,747 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
This is the easy version of the problem. The difference between the versions is in the constraints on the array elements. You can make hacks only if all versions of the problem are solved.
You ... | instruction | 0 | 49,874 | 12 | 99,748 |
No | output | 1 | 49,874 | 12 | 99,749 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
This is the easy version of the problem. The difference between the versions is in the constraints on the array elements. You can make hacks only if all versions of the problem are solved.
You ... | instruction | 0 | 49,875 | 12 | 99,750 |
No | output | 1 | 49,875 | 12 | 99,751 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Let's define the sum of two permutations p and q of numbers 0, 1, ..., (n - 1) as permutation <image>, where Perm(x) is the x-th lexicographically permutation of numbers 0, 1, ..., (n - 1) (counting from zero), and Ord(p) is the number of pe... | instruction | 0 | 50,022 | 12 | 100,044 |
Tags: data structures
Correct Solution:
```
import sys
class SegmTree():
def __init__(self, array=None):
size = len(array)
N = 1
while N < size:
N <<= 1
self.N = N
self.tree = [0] * (2*self.N)
for i in range(size):
self.tree[i+self.N] = array[... | output | 1 | 50,022 | 12 | 100,045 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Let's define the sum of two permutations p and q of numbers 0, 1, ..., (n - 1) as permutation <image>, where Perm(x) is the x-th lexicographically permutation of numbers 0, 1, ..., (n - 1) (counting from zero), and Ord(p) is the number of pe... | instruction | 0 | 50,023 | 12 | 100,046 |
Tags: data structures
Correct Solution:
```
def sum(BIT, i):
s = 0
while i > 0:
s += BIT[i]
i -= i & (-i)
return s
def update(BIT, i, v):
while i < len(BIT):
BIT[i] += v
i += i & (-i)
def find(fen, k):
curr = 0
ans = 0
prevsum = 0
for i in range(19, -... | output | 1 | 50,023 | 12 | 100,047 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Let's define the sum of two permutations p and q of numbers 0, 1, ..., (n - 1) as permutation <image>, where Perm(x) is the x-th lexicographically permutation of numbers 0, 1, ..., (n - 1) (counting from zero), and Ord(p) is the number of pe... | instruction | 0 | 50,024 | 12 | 100,048 |
Tags: data structures
Correct Solution:
```
import sys
class SegmTree():
def __init__(self, array=None):
size = len(array)
N = 1
while N < size:
N <<= 1
self.N = N
self.tree = [0] * (2*self.N)
for i in range(size):
self.tree[i+self.N] = array... | output | 1 | 50,024 | 12 | 100,049 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let's define the sum of two permutations p and q of numbers 0, 1, ..., (n - 1) as permutation <image>, where Perm(x) is the x-th lexicographically permutation of numbers 0, 1, ..., (n - 1) (coun... | instruction | 0 | 50,025 | 12 | 100,050 |
No | output | 1 | 50,025 | 12 | 100,051 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a sequence of n integers a1, a2, ..., an.
Determine a real number x such that the weakness of the sequence a1 - x, a2 - x, ..., an - x is as small as possible.
The weakness of a sequence is defined as the maximum value of th... | instruction | 0 | 50,058 | 12 | 100,116 |
Tags: ternary search
Correct Solution:
```
n = int(input())
A = list(map(int, input().split()))
def max_subarray(A):
max_ending_here = max_so_far = 0
for x in A:
max_ending_here = max(0, max_ending_here + x)
max_so_far = max(max_so_far, max_ending_here)
return max_so_far
def f1(x):
r... | output | 1 | 50,058 | 12 | 100,117 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a sequence of n integers a1, a2, ..., an.
Determine a real number x such that the weakness of the sequence a1 - x, a2 - x, ..., an - x is as small as possible.
The weakness of a sequence is defined as the maximum value of th... | instruction | 0 | 50,059 | 12 | 100,118 |
Tags: ternary search
Correct Solution:
```
def max_sum(nums, shift):
res = 0
res_m = 0
cur_sum = 0
cur_m_sum = 0
for i in range(len(nums)):
cur_sum += (nums[i] + shift)
cur_m_sum += (nums[i] + shift)
res = max(res, cur_sum)
cur_sum = max(0, cur_sum)
res_m = min(res_m, cur_m_sum)
cur_m_sum = min(0, cur_... | output | 1 | 50,059 | 12 | 100,119 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a sequence of n integers a1, a2, ..., an.
Determine a real number x such that the weakness of the sequence a1 - x, a2 - x, ..., an - x is as small as possible.
The weakness of a sequence is defined as the maximum value of th... | instruction | 0 | 50,060 | 12 | 100,120 |
Tags: ternary search
Correct Solution:
```
def main():
input()
a = list(map(int, input().split()))
def f(a):
maxend = maxnow = 0
for x in a:
maxend = max(0, maxend + x)
maxnow = max(maxnow, maxend)
return maxnow
f1 = lambda x: f(i - x for i in a)
f2 = lambda x: f(x - i for i in... | output | 1 | 50,060 | 12 | 100,121 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You're given an array a of length 2n. Is it possible to reorder it in such way so that the sum of the first n elements isn't equal to the sum of the last n elements?
Input
The first line contains an integer n (1 ≤ n ≤ 1000), where 2n is th... | instruction | 0 | 50,559 | 12 | 101,118 |
Tags: constructive algorithms, greedy, sortings
Correct Solution:
```
from math import *
n = int(input())
l = list(map(int,input().split()))
ans = 0
l.sort()
d = dict()
for i in l:
if i not in d:
d[i] = 1
else:
d[i] += 1
for key,val in d.items():
if val == 2*n:
ans = -1
if(ans != -1... | output | 1 | 50,559 | 12 | 101,119 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You're given an array a of length 2n. Is it possible to reorder it in such way so that the sum of the first n elements isn't equal to the sum of the last n elements?
Input
The first line contains an integer n (1 ≤ n ≤ 1000), where 2n is th... | instruction | 0 | 50,560 | 12 | 101,120 |
Tags: constructive algorithms, greedy, sortings
Correct Solution:
```
n = int(input())
a = [int(x) for x in input().split()]
a.sort()
if a[0] == a[-1]:
print(-1)
else:
for i in a:
print(i, end=' ')
``` | output | 1 | 50,560 | 12 | 101,121 |
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