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

main.js

// Credit: Nusab Taha @Nusab19
// Minimized Version: https://gist.github.com/Nusab19/fc8d96ae73a910acb8403758dc41f8c5
// Do not change anything from here....
let _inputData = "";
let _inputArray = [];
let _count = -1;
process.stdin.setEncoding("utf8");
process.stdin.on("data", function (chunk) {
    _inputData += chunk;
});
process.stdin.on("end", function () {
    _inputArray = _inputData.split("\n");
    input();
    main();
});
function input() {
    let line = _inputArray[_count];
    _count++;
    return line;
}
// Till here.....

// 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);
}