Take input in NodeJS for Online Judges. This is the short version.

main.min.js

// Credit: Nusab Taha @Nusab19
// Gist: https://gist.github.com/Nusab19/fc8d96ae73a910acb8403758dc41f8c5
let _inputData="",_inputArray=[],_count=-1;function input(){let n=_inputArray[_count];return _count++,n}process.stdin.setEncoding("utf8"),process.stdin.on("data",(function(n){_inputData+=n})),process.stdin.on("end",(function(){_inputArray=_inputData.split("\n"),input(),main()}));


// You need to code everything in this main function.
function main() {
  // input function will return a `string` or `undefined`.
  // `undefined` means there's no more input left.

  let a = input();
  let b = input();
  let c = input();
  console.log(a, b, c);
}