function isTriangle(input){
//  console.log("Please input the numbers");
  const input3 = input.split(' ');
//  console.log(input3);
  A = parseInt(input3[0].replace(/\r?\n/g,''));
  B = parseInt(input3[1].replace(/\r?\n/g,''));
  C = parseInt(input3[2].replace(/\r?\n/g,''));
//  console.log(A);
//  console.log(B);
//  console.log(C);
  if (A < 1 || 100 < A) {
//    console.log("A is out of range");
    return;
  }
  if (B < 1 || 100 < B) {
//    console.log("B is out of range");
    return;
  }
  if (C < 1 || 100 < C) {
//    console.log("C is out of range");
    return;;
  }
  if (A==B && B==C && C==A){
    console.log("Yes");
  }else{
    console.log("No");
  }
}

isTriangle(require("fs").readFileSync("/dev/stdin", "utf8"));
