View Code of Problem 133

#include<iostream>
#include<vector>
#include<string>
#include <algorithm>
#include <math.h>
using namespace std;



int main() {
    int t;
    cin >> t;
    while (t--){
        int n,x;
        cin >> n >> x;
        int a[n];
        for(int i=0; i<n; i++){
            cin >> a[i];
        }
        sort(a,a+n);
        int b = 0;
        int e = n-1;
        bool flag = false;
        while(b<e){
            if(a[b]+a[e] == x){
                cout << "YES" << endl;
                flag = true;
                break;
            }else if(a[b]+a[e] < x) {
                b++;
            }else{
                e--;
            }
        }
        if(!flag){
            cout << "NO" <<endl;
        }
    }
    return 0;

}