ANITGUY1 - Editorial

editorial
,
1

Problem link: CodeChef: Practical coding for everyone

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

2

1
4
4
1 1 1 3

your output-2
correct output-1

Thanks and Regards

9 Likes
3

This is wrong

4

this is wrong !!!

5

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

3 Likes
6

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

2 Likes
7

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.