View Code of Problem 133

#include "stdlib.h"
#include "algorithm"
#include "iostream"
#include <cstdio>
#include "string"
#include <iomanip>
#include <map>
#include <set>
#include "math.h"
using namespace std;
map<int, bool> mp;
set<string> st;


int main()
{
	int t, n, x, tmp; cin >> t; string str;
	while (t--)
	{
		int flag = 0; int i = 0;
		cin >> n >> x;
		for (i = 0; i < n; i++)
		{
			cin >> tmp;
			if (tmp < x)
			{
				mp[tmp] = true;
				if (mp[x - tmp] == true)
				{
					flag = 1;
					break;
				}
			}
		}
		if (i != n - 1)getline(cin,str);
		if (flag == 0)cout << "NO" << endl;
		else cout << "YES" << endl;
		mp.clear();
	}
	return 0;
}