Envío 5165

Código

process.stdin.on('data', (input) => {
  process.stdin.on('data', (n) => {
    let inputArray = input.toString().split('').map(n => Number(n));
    inputArray.pop();
    let number = Number(n);
    let index = inputArray.length - 1;
    let current;
    do {
      current = inputArray[index] + number;
      inputArray[index] = current%10;
      number = Math.floor(current/10);
      index--;
    } while (current > 9 && index >= 0);

    let response;
    if (current > 9) {
      response = [1, ...inputArray].join('');
    } else {
      response = inputArray.join('');
    }
    console.log(response);
    process.exit();
  });
});