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.
Ashish has an array a of consisting of 2n positive integers. He wants to compress a into an array b of size n-1. To do this, he first discards exactly 2 (any two) elements from a. He then performs the following operation until there are no e... | instruction | 0 | 11,782 | 12 | 23,564 |
Tags: constructive algorithms, math, number theory
Correct Solution:
```
t=int(input())
for i in range(t):
n=int(input())*2
l=list(map(int,input().split()))
a=[];b=[];
for j in range(n):
a.append(j+1) if l[j]%2==0 else b.append(j+1)
x=len(a);y=len(b);p=0;
if(x%2==0):
for k1 in ra... | output | 1 | 11,782 | 12 | 23,565 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Ashish has an array a of consisting of 2n positive integers. He wants to compress a into an array b of size n-1. To do this, he first discards exactly 2 (any two) elements from a. He then performs the following operation until there are no e... | instruction | 0 | 11,783 | 12 | 23,566 |
Tags: constructive algorithms, math, number theory
Correct Solution:
```
def gcd(array):
array_odd=[]
array_even=[]
n_odd=0
for y,x in enumerate(array):
if x%2!=0:
n_odd+=1
array_odd.append(y+1)
else:
array_even.append(y+1)
if n_odd%2==0:
... | output | 1 | 11,783 | 12 | 23,567 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Ashish has an array a of consisting of 2n positive integers. He wants to compress a into an array b of size n-1. To do this, he first discards exactly 2 (any two) elements from a. He then performs the following operation until there are no e... | instruction | 0 | 11,784 | 12 | 23,568 |
Tags: constructive algorithms, math, number theory
Correct Solution:
```
# from collections import defaultdict
rr = lambda: input()
rri = lambda: int(input())
rrm = lambda: list(map(int, input().split()))
INF=float('inf')
primes = None # set later on
def solve(N,A):
# O(n^2)
used = set()
pairs = []
for i in rang... | output | 1 | 11,784 | 12 | 23,569 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Ashish has an array a of consisting of 2n positive integers. He wants to compress a into an array b of size n-1. To do this, he first discards exactly 2 (any two) elements from a. He then performs the following operation until there are no e... | instruction | 0 | 11,785 | 12 | 23,570 |
Tags: constructive algorithms, math, number theory
Correct Solution:
```
import math
wqr = int(input())
for er in range(wqr):
n = int(input())
temp = list(map(int,input().split(" ")))
od = []
ev = []
for i in range(2*n):
if(temp[i]%2==0):
ev.append(i+1)
else:
... | output | 1 | 11,785 | 12 | 23,571 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Ashish has an array a of consisting of 2n positive integers. He wants to compress a into an array b of size n-1. To do this, he first discards exactly 2 (any two) elements from a. He then performs the following operation until there are no e... | instruction | 0 | 11,786 | 12 | 23,572 |
Tags: constructive algorithms, math, number theory
Correct Solution:
```
for _ in range(int(input())):
n = int(input())
a = list(map(int, input().split(" ")))
e = []
o = []
for i in range(len(a)):
if a[i]%2 == 0:
e.append(i+1)
else:
o.append(i+1)
if(len(e)%2==0):
if(len(e)>2):
i = 2
while(i<l... | output | 1 | 11,786 | 12 | 23,573 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Ashish has an array a of consisting of 2n positive integers. He wants to compress a into an array b of size n-1. To do this, he first discards exactly 2 (any two) elements from a. He then performs the following operation until there are no e... | instruction | 0 | 11,787 | 12 | 23,574 |
Tags: constructive algorithms, math, number theory
Correct Solution:
```
import sys
# from collections import defaultdict, deque
import math
# import copy
# from bisect import bisect_left, bisect_right
# import heapq
# sys.setrecursionlimit(1000000)
# input aliases
input = sys.stdin.readline
getS = lambda: input().... | output | 1 | 11,787 | 12 | 23,575 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Ashish has an array a of consisting of 2n positive integers. He wants to compress a into an array b of size n-1. To do this, he first discards exactly 2 (any two) elements from a. He then perfor... | instruction | 0 | 11,788 | 12 | 23,576 |
Yes | output | 1 | 11,788 | 12 | 23,577 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Ashish has an array a of consisting of 2n positive integers. He wants to compress a into an array b of size n-1. To do this, he first discards exactly 2 (any two) elements from a. He then perfor... | instruction | 0 | 11,789 | 12 | 23,578 |
Yes | output | 1 | 11,789 | 12 | 23,579 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Ashish has an array a of consisting of 2n positive integers. He wants to compress a into an array b of size n-1. To do this, he first discards exactly 2 (any two) elements from a. He then perfor... | instruction | 0 | 11,790 | 12 | 23,580 |
Yes | output | 1 | 11,790 | 12 | 23,581 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Ashish has an array a of consisting of 2n positive integers. He wants to compress a into an array b of size n-1. To do this, he first discards exactly 2 (any two) elements from a. He then perfor... | instruction | 0 | 11,791 | 12 | 23,582 |
Yes | output | 1 | 11,791 | 12 | 23,583 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Ashish has an array a of consisting of 2n positive integers. He wants to compress a into an array b of size n-1. To do this, he first discards exactly 2 (any two) elements from a. He then perfor... | instruction | 0 | 11,792 | 12 | 23,584 |
No | output | 1 | 11,792 | 12 | 23,585 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Ashish has an array a of consisting of 2n positive integers. He wants to compress a into an array b of size n-1. To do this, he first discards exactly 2 (any two) elements from a. He then perfor... | instruction | 0 | 11,793 | 12 | 23,586 |
No | output | 1 | 11,793 | 12 | 23,587 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Ashish has an array a of consisting of 2n positive integers. He wants to compress a into an array b of size n-1. To do this, he first discards exactly 2 (any two) elements from a. He then perfor... | instruction | 0 | 11,794 | 12 | 23,588 |
No | output | 1 | 11,794 | 12 | 23,589 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Ashish has an array a of consisting of 2n positive integers. He wants to compress a into an array b of size n-1. To do this, he first discards exactly 2 (any two) elements from a. He then perfor... | instruction | 0 | 11,795 | 12 | 23,590 |
No | output | 1 | 11,795 | 12 | 23,591 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an array a consisting of n integers numbered from 1 to n.
Let's define the k-amazing number of the array as the minimum number that occurs in all of the subsegments of the array having length k (recall that a subsegment of a o... | instruction | 0 | 11,796 | 12 | 23,592 |
Tags: binary search, data structures, implementation, two pointers
Correct Solution:
```
t = int(input())
for j in range(t):
n = int(input())
l=list(map(int,input().split()))
ans=[-1 for j in range(n+3)]
d={}
la=l[-1]
f=l[0]
for j in range(n):
if l[j] not in d:
d[l[j]]=[]... | output | 1 | 11,796 | 12 | 23,593 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an array a consisting of n integers numbered from 1 to n.
Let's define the k-amazing number of the array as the minimum number that occurs in all of the subsegments of the array having length k (recall that a subsegment of a o... | instruction | 0 | 11,797 | 12 | 23,594 |
Tags: binary search, data structures, implementation, two pointers
Correct Solution:
```
import io, os
input = io.BytesIO(os.read(0,os.fstat(0).st_size)).readline
t = int(input())
for _ in range(t):
n = int(input())
a = list(map(int, input().split()))
min_subsegment = [-1]*(n+1)
last_seen = [-1]*... | output | 1 | 11,797 | 12 | 23,595 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an array a consisting of n integers numbered from 1 to n.
Let's define the k-amazing number of the array as the minimum number that occurs in all of the subsegments of the array having length k (recall that a subsegment of a o... | instruction | 0 | 11,798 | 12 | 23,596 |
Tags: binary search, data structures, implementation, two pointers
Correct Solution:
```
for _ in range(int(input())):
n = int(input())
a = list(map(int,input().split()))
last = [-1 for _ in range(n)]
maxlen = [-1 for _ in range(n)]
for i in range(n):
x = a[i]-1
maxlen[x] = max(maxle... | output | 1 | 11,798 | 12 | 23,597 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an array a consisting of n integers numbered from 1 to n.
Let's define the k-amazing number of the array as the minimum number that occurs in all of the subsegments of the array having length k (recall that a subsegment of a o... | instruction | 0 | 11,799 | 12 | 23,598 |
Tags: binary search, data structures, implementation, two pointers
Correct Solution:
```
import sys
def input(): return sys.stdin.readline().strip()
def list2d(a, b, c): return [[c for j in range(b)] for i in range(a)]
def list3d(a, b, c, d): return [[[d for k in range(c)] for j in range(b)] for i in range(a)]
def lis... | output | 1 | 11,799 | 12 | 23,599 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an array a consisting of n integers numbered from 1 to n.
Let's define the k-amazing number of the array as the minimum number that occurs in all of the subsegments of the array having length k (recall that a subsegment of a o... | instruction | 0 | 11,800 | 12 | 23,600 |
Tags: binary search, data structures, implementation, two pointers
Correct Solution:
```
from sys import stdin;
from collections import defaultdict
t = int(stdin.readline())
while(t):
seen = defaultdict(list)
n = int(stdin.readline())
a = [int(x) for x in stdin.readline().split()]
best = ()
for i in... | output | 1 | 11,800 | 12 | 23,601 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an array a consisting of n integers numbered from 1 to n.
Let's define the k-amazing number of the array as the minimum number that occurs in all of the subsegments of the array having length k (recall that a subsegment of a o... | instruction | 0 | 11,801 | 12 | 23,602 |
Tags: binary search, data structures, implementation, two pointers
Correct Solution:
```
import sys,functools,collections,bisect,math,heapq
input = sys.stdin.readline
#print = sys.stdout.write
sys.setrecursionlimit(200000)
mod = 10**9 + 7
t = int(input())
for _ in range(t):
n = int(input())
arr = list(map(int,... | output | 1 | 11,801 | 12 | 23,603 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an array a consisting of n integers numbered from 1 to n.
Let's define the k-amazing number of the array as the minimum number that occurs in all of the subsegments of the array having length k (recall that a subsegment of a o... | instruction | 0 | 11,802 | 12 | 23,604 |
Tags: binary search, data structures, implementation, two pointers
Correct Solution:
```
import sys
import math
from collections import defaultdict,Counter
# input=sys.stdin.readline
# def print(x):
# sys.stdout.write(str(x)+"\n")
# sys.stdout=open("CP2/output.txt",'w')
# sys.stdin=open("CP2/input.txt",'r')
# mo... | output | 1 | 11,802 | 12 | 23,605 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an array a consisting of n integers numbered from 1 to n.
Let's define the k-amazing number of the array as the minimum number that occurs in all of the subsegments of the array having length k (recall that a subsegment of a o... | instruction | 0 | 11,803 | 12 | 23,606 |
Tags: binary search, data structures, implementation, two pointers
Correct Solution:
```
# Author : -pratyay-
import sys
inp=sys.stdin.buffer.readline
inar=lambda: list(map(int,inp().split()))
inin=lambda: int(inp())
inst=lambda: inp().decode().strip()
def pr(*args,end='\n'):
for _arg in args:
sys.stdout.wr... | output | 1 | 11,803 | 12 | 23,607 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an array a consisting of n integers numbered from 1 to n.
Let's define the k-amazing number of the array as the minimum number that occurs in all of the subsegments of the array h... | instruction | 0 | 11,804 | 12 | 23,608 |
Yes | output | 1 | 11,804 | 12 | 23,609 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an array a consisting of n integers numbered from 1 to n.
Let's define the k-amazing number of the array as the minimum number that occurs in all of the subsegments of the array h... | instruction | 0 | 11,805 | 12 | 23,610 |
Yes | output | 1 | 11,805 | 12 | 23,611 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an array a consisting of n integers numbered from 1 to n.
Let's define the k-amazing number of the array as the minimum number that occurs in all of the subsegments of the array h... | instruction | 0 | 11,806 | 12 | 23,612 |
Yes | output | 1 | 11,806 | 12 | 23,613 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an array a consisting of n integers numbered from 1 to n.
Let's define the k-amazing number of the array as the minimum number that occurs in all of the subsegments of the array h... | instruction | 0 | 11,807 | 12 | 23,614 |
Yes | output | 1 | 11,807 | 12 | 23,615 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an array a consisting of n integers numbered from 1 to n.
Let's define the k-amazing number of the array as the minimum number that occurs in all of the subsegments of the array h... | instruction | 0 | 11,808 | 12 | 23,616 |
No | output | 1 | 11,808 | 12 | 23,617 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an array a consisting of n integers numbered from 1 to n.
Let's define the k-amazing number of the array as the minimum number that occurs in all of the subsegments of the array h... | instruction | 0 | 11,809 | 12 | 23,618 |
No | output | 1 | 11,809 | 12 | 23,619 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an array a consisting of n integers numbered from 1 to n.
Let's define the k-amazing number of the array as the minimum number that occurs in all of the subsegments of the array h... | instruction | 0 | 11,810 | 12 | 23,620 |
No | output | 1 | 11,810 | 12 | 23,621 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an array a consisting of n integers numbered from 1 to n.
Let's define the k-amazing number of the array as the minimum number that occurs in all of the subsegments of the array h... | instruction | 0 | 11,811 | 12 | 23,622 |
No | output | 1 | 11,811 | 12 | 23,623 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Yaroslav has an array, consisting of (2·n - 1) integers. In a single operation Yaroslav can change the sign of exactly n elements in the array. In other words, in one operation Yaroslav can select exactly n array elements, and multiply each ... | instruction | 0 | 11,960 | 12 | 23,920 |
Tags: constructive algorithms
Correct Solution:
```
# Legends Always Come Up with Solution
# Author: Manvir Singh
import os
import sys
from io import BytesIO, IOBase
def main():
n = int(input())
a=list(map(int,input().split()))
su,b,mi=0,0,10000
for i in a:
su+=abs(i)
b+=(i<0)
... | output | 1 | 11,960 | 12 | 23,921 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Yaroslav has an array, consisting of (2·n - 1) integers. In a single operation Yaroslav can change the sign of exactly n elements in the array. In other words, in one operation Yaroslav can select exactly n array elements, and multiply each ... | instruction | 0 | 11,961 | 12 | 23,922 |
Tags: constructive algorithms
Correct Solution:
```
n = int(input())
a = list(map(int, input().split()))
t = 0
for i in range(len(a)):
if a[i] < 0:
t += 1
a[i] = -a[i]
if t % 2 == 0 or n % 2 == 1:
print(sum(a))
else:
print(sum(a) - min(a) * 2)
``` | output | 1 | 11,961 | 12 | 23,923 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Yaroslav has an array, consisting of (2·n - 1) integers. In a single operation Yaroslav can change the sign of exactly n elements in the array. In other words, in one operation Yaroslav can select exactly n array elements, and multiply each ... | instruction | 0 | 11,962 | 12 | 23,924 |
Tags: constructive algorithms
Correct Solution:
```
n = int(input())
arr = [int(x) for x in input().split()]
neg = []
pos = []
ans = sum(arr)
for i in range(2*n - 1):
if(arr[i]<0):
neg.append(arr[i])
pos.append(abs(arr[i]))
if(len(neg)&1 and (n + 1) & 1):
print(sum(pos) - 2*min(pos))
else:
print... | output | 1 | 11,962 | 12 | 23,925 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Yaroslav has an array, consisting of (2·n - 1) integers. In a single operation Yaroslav can change the sign of exactly n elements in the array. In other words, in one operation Yaroslav can select exactly n array elements, and multiply each ... | instruction | 0 | 11,963 | 12 | 23,926 |
Tags: constructive algorithms
Correct Solution:
```
n = int(input())
a=[int(x) for x in input().split()]
count=0
for i in range(2*n-1):
if (a[i]<0):
count+=1
if (n%2==0 and count%2!=0):
for i in range(2 * n - 1):
if (a[i] < 0):
a[i] = a[i]*(-1)
a = sorted(a)
a[0] = a[0]*(-1)
... | output | 1 | 11,963 | 12 | 23,927 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Yaroslav has an array, consisting of (2·n - 1) integers. In a single operation Yaroslav can change the sign of exactly n elements in the array. In other words, in one operation Yaroslav can select exactly n array elements, and multiply each ... | instruction | 0 | 11,964 | 12 | 23,928 |
Tags: constructive algorithms
Correct Solution:
```
n = int(input())
a = list(map(int, input().split()))
b = 0
for i in a:
if i < 0:
b += 1
c = list(map(abs, a))
if b & 1 and n + 1 & 1:
print(sum(c) - 2 * min(c))
else:
print(sum(c))
``` | output | 1 | 11,964 | 12 | 23,929 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Yaroslav has an array, consisting of (2·n - 1) integers. In a single operation Yaroslav can change the sign of exactly n elements in the array. In other words, in one operation Yaroslav can select exactly n array elements, and multiply each ... | instruction | 0 | 11,965 | 12 | 23,930 |
Tags: constructive algorithms
Correct Solution:
```
def main():
n = int(input())
seq = list(map(int, input().split()))
neg = [x for x in seq if x < 0]
seq = [abs(x) for x in seq]
ans = sum(seq)
if n%2==0 and len(neg)%2==1:
ans = ans - (2 * sorted(seq)[0])
print(ans)
if __name__ == '__main__':
main()
... | output | 1 | 11,965 | 12 | 23,931 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Yaroslav has an array, consisting of (2·n - 1) integers. In a single operation Yaroslav can change the sign of exactly n elements in the array. In other words, in one operation Yaroslav can select exactly n array elements, and multiply each ... | instruction | 0 | 11,966 | 12 | 23,932 |
Tags: constructive algorithms
Correct Solution:
```
#!/usr/bin/python3
n = int(input())
data = list(map(int, input().split()))
negative, zero, positive = 0, 0, 0
for element in data:
if element < 0:
negative += 1
elif element == 0:
zero += 1
else:
positive += 1
seen = {}
min_negat... | output | 1 | 11,966 | 12 | 23,933 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Yaroslav has an array, consisting of (2·n - 1) integers. In a single operation Yaroslav can change the sign of exactly n elements in the array. In other words, in one operation Yaroslav can select exactly n array elements, and multiply each ... | instruction | 0 | 11,967 | 12 | 23,934 |
Tags: constructive algorithms
Correct Solution:
```
n, t = int(input()), list(map(int, input().split()))
p = list(map(abs, t))
s = sum(p)
if n & 1 == 0 and len([0 for i in t if i < 0]) & 1: s -= 2 * min(p)
print(s)
``` | output | 1 | 11,967 | 12 | 23,935 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Yaroslav has an array, consisting of (2·n - 1) integers. In a single operation Yaroslav can change the sign of exactly n elements in the array. In other words, in one operation Yaroslav can sele... | instruction | 0 | 11,968 | 12 | 23,936 |
Yes | output | 1 | 11,968 | 12 | 23,937 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Yaroslav has an array, consisting of (2·n - 1) integers. In a single operation Yaroslav can change the sign of exactly n elements in the array. In other words, in one operation Yaroslav can sele... | instruction | 0 | 11,969 | 12 | 23,938 |
Yes | output | 1 | 11,969 | 12 | 23,939 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Yaroslav has an array, consisting of (2·n - 1) integers. In a single operation Yaroslav can change the sign of exactly n elements in the array. In other words, in one operation Yaroslav can sele... | instruction | 0 | 11,970 | 12 | 23,940 |
Yes | output | 1 | 11,970 | 12 | 23,941 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Yaroslav has an array, consisting of (2·n - 1) integers. In a single operation Yaroslav can change the sign of exactly n elements in the array. In other words, in one operation Yaroslav can sele... | instruction | 0 | 11,971 | 12 | 23,942 |
Yes | output | 1 | 11,971 | 12 | 23,943 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Yaroslav has an array, consisting of (2·n - 1) integers. In a single operation Yaroslav can change the sign of exactly n elements in the array. In other words, in one operation Yaroslav can sele... | instruction | 0 | 11,972 | 12 | 23,944 |
No | output | 1 | 11,972 | 12 | 23,945 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Yaroslav has an array, consisting of (2·n - 1) integers. In a single operation Yaroslav can change the sign of exactly n elements in the array. In other words, in one operation Yaroslav can sele... | instruction | 0 | 11,973 | 12 | 23,946 |
No | output | 1 | 11,973 | 12 | 23,947 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Yaroslav has an array, consisting of (2·n - 1) integers. In a single operation Yaroslav can change the sign of exactly n elements in the array. In other words, in one operation Yaroslav can sele... | instruction | 0 | 11,974 | 12 | 23,948 |
No | output | 1 | 11,974 | 12 | 23,949 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Yaroslav has an array, consisting of (2·n - 1) integers. In a single operation Yaroslav can change the sign of exactly n elements in the array. In other words, in one operation Yaroslav can sele... | instruction | 0 | 11,975 | 12 | 23,950 |
No | output | 1 | 11,975 | 12 | 23,951 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You've got array a[1], a[2], ..., a[n], consisting of n integers. Count the number of ways to split all the elements of the array into three contiguous parts so that the sum of elements in each part is the same.
More formally, you need to ... | instruction | 0 | 12,009 | 12 | 24,018 |
Tags: binary search, brute force, data structures, dp, two pointers
Correct Solution:
```
n=int(input())
c=list(map(int,input().split()))
pre=[0 for _ in range(n)]
pre[0]=c[0]
for i in range(1,n):
pre[i]=c[i]
pre[i]+=pre[i-1]
#print(pre)
if pre[-1]%3!=0:
print(0)
exit(0)
u,v=0,0
a=pre[-1]//3
for i in r... | output | 1 | 12,009 | 12 | 24,019 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You've got array a[1], a[2], ..., a[n], consisting of n integers. Count the number of ways to split all the elements of the array into three contiguous parts so that the sum of elements in each part is the same.
More formally, you need to ... | instruction | 0 | 12,010 | 12 | 24,020 |
Tags: binary search, brute force, data structures, dp, two pointers
Correct Solution:
```
from collections import deque, Counter, OrderedDict
from heapq import nsmallest, nlargest
from math import ceil,floor,log,log2,sqrt,gcd,factorial,pow,pi
def binNumber(n,size=4):
return bin(n)[2:].zfill(size)
def iar():
r... | output | 1 | 12,010 | 12 | 24,021 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You've got array a[1], a[2], ..., a[n], consisting of n integers. Count the number of ways to split all the elements of the array into three contiguous parts so that the sum of elements in each part is the same.
More formally, you need to ... | instruction | 0 | 12,011 | 12 | 24,022 |
Tags: binary search, brute force, data structures, dp, two pointers
Correct Solution:
```
elements = int(input())
arr = list(map(int,input().split()))
arr_sum, answer, count, temp_sum = sum(arr), 0, 0, 0
if arr_sum % 3 == 0:
arr_sum = arr_sum / 3
for i in range(elements - 1):
temp_sum = temp_sum + arr[... | output | 1 | 12,011 | 12 | 24,023 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You've got array a[1], a[2], ..., a[n], consisting of n integers. Count the number of ways to split all the elements of the array into three contiguous parts so that the sum of elements in each part is the same.
More formally, you need to ... | instruction | 0 | 12,012 | 12 | 24,024 |
Tags: binary search, brute force, data structures, dp, two pointers
Correct Solution:
```
n = int(input())
*arr , = map(int , input().split())
prefix_arr = [0 for i in range(n)]
prefix_arr[0] = arr[0]
for i in range(1 ,n):
prefix_arr[i] = arr[i] + prefix_arr[i-1]
ans = fac = 0
# print(*prefix_arr)
for i in range(... | output | 1 | 12,012 | 12 | 24,025 |
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