View Code of Problem 133

#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <cmath>
#include <string>
#include <queue>
#include <stack>
#include <algorithm>

const int inf = (1<<31)-1;
const int MAXN = 2e5+10;
const int T = 1e5;
using namespace std;

int a[MAXN];
int b[MAXN];
int n;

int main()
{
    int t,x;
    scanf("%d",&t);
    while(t--){
        scanf("%d%d",&n,&x);
        int flag = 0;
        memset(b,0,sizeof(b));
        for(int i=0;i<n;i++){
            scanf("%d",&a[i]);
            b[a[i]+T]++;
        }
        for(int i=0;i<n;i++){
            if(x-a[i]==a[i]&&b[a[i]+T]>1){
                flag = 1;
                break;
            }else if(x-a[i]!=a[i]&&b[x-a[i]+T]){
                flag = 1;
            }
        }
        if(flag)cout<<"YES"<<endl;
        else cout<<"NO"<<endl;
    }
    //cout << "Hello world!" << endl;
    return 0;
}