2231 분해합

const input = require('fs').readFileSync('../input.txt').toString().trim();
const N = Number(input);

let result = 0;
for (let i = 0; i < N; i++) {
  let sum = 0;
  const str = i.toString();

  for (let j = 0; j < str.length; j++) {
    sum += Number(str[j]);
  }

  sum += i;
  if (sum == N) {
    result = i;
    break;
  }
}
console.log(result);