View Code of Problem 133

#include<iostream>

using namespace std;

int main(){
	int t;
	cin>>t;
	while(t--){
		int n;
		int X;
		cin>>n>>X;
		int a[n]={0};
		int b[10000000]={0};
		for(int i=0;i<n;++i){
			cin>>a[i];
			b[a[i]]++;
		}
		bool flag=false;
		for(int i=0;i<n;++i){
			if(b[X-a[i]]!=0){
				flag=true;
				break;
			}
		}
		if(flag){
			cout<<"YES"<<endl;
		}
		else{
			cout<<"NO"<<endl;	
		}
	}
	return 0;
}