ANITGUY1 - Editorial

Problem link: https://www.codechef.com/PPW12020/problems/ANITGUY1

Difficulty:
moderate

Solution:

#include <bits/stdc++.h>
using namespace std;

// driver code
int main()
{

int t;
cin>>t;
while(t--){
	int k,n;
	cin>>k>>n;
	int arr[n];
	for(int i=0;i<n;i++)cin>>arr[i];
	sort(arr,arr+n);
	int ans=0;
	for(int i=0;i<n;i++){
		if(binary_search(arr,arr+n,k-arr[i]))ans++;
	}
	cout << ans/2 << endl;
}
return 0; 

}

Time : 0.1sec

Thanks and Regards

1
4
4
1 1 1 3

your output-2
correct output-1

Thanks and Regards

9 Likes

This is wrong

this is wrong !!!

This is some GOD level stupidity that you’ve done, dude there’s no need of hosting such trash contests. Kindly learn to value everyone’s time

2 Likes

Please don’t arrange any contest like this in future.
Many were getting WA though their code was absolutely correct.

2 Likes

Ok Guys, That was my first attempt to contribute to the coders society.
I felt badly…
As learning is exponential constant for me…
I am updating myself.

Hope in future, I will contribute for good.