View Code of Problem 3686

#include<cstdio>
#include<cstring>
#include<cmath>
#include<iostream>
#include<algorithm>
#define N 100
using namespace std;
int main()
{
	int t;
	cin>>t;
	while(t--)
	{
		int n,x,leap=0;
		cin>>n>>x;
		int str[n];
		for(int i=0;i<n;i++)
			cin>>str[i];
		sort(str,str+n);
		for(int i=0,j=n-1;i<n&&i<j;)
		{
			if(str[i]+str[j]==x)
			{
				leap=1;
				break;
			}
			else if(str[i]+str[j]>x)
				j--;
			else
				i++;
		}
		if(leap)
			cout<<"YES"<<endl;
		else
			cout<<"NO"<<endl;
			
	}
}