function main(input) {
  var a = Number(input.split(" ")[0]);
  var b = Number(input.split(" ")[1]);
  var c = Number(input.split(" ")[2]);

  var ans = false;
  if(a==b && a==c && b==c){
    ans=true;
  }
  console.log(ans?"Yes":"No");


}

main(require('fs').readFileSync('/dev/stdin', 'utf8'))
