2167A

DevGod

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cpp

#include <iostream>
using namespace std;

int main()
{
    int T;
    cin >> T;
    while(T--){
      int A, B, C, D;
      cin >> A >> B >> C >> D;
      cout << (A==B && B==C && C==D ? "YES" : "NO" ) << endl;
    }
    return 0;
}