// Copyright (c) 2019-present, Facebook, Inc.
// All rights reserved.
//
// This source code is licensed under the license found in the
// LICENSE file in the root directory of this source tree.
//

import java.util. *;
import java.util.stream.*;
import java.lang.*;
import javafx.util.Pair;
public class PYTHAGOREAN_QUADRUPLE{
static Boolean f_gold ( int a , int b , int c , int d ) {
  int sum = a * a + b * b + c * c ;
  if ( d * d == sum ) return true ;
  else return false ;
}
}
