A_Draw_a_Square.cpp

#include<bits/stdc++.h>
using namespace std;
#define int long long

signed main(){
    int t; 
    cin >> t;
    while(t--){
        int l, r, d, u;
        cin >> l >> r >> d >> u;
        if(l == r && r == d && d == u) cout << "YES" << endl;
        else cout << "NO" << endl;       
    }
    return 0;
}