'use strict';

const main = (input) => {
  const [N] = input.trim();
  let num = Number(N);
  if (num % 3 === 0) {
    console.log(0);
  } else if (num % 3 === 2) {
    console.log(1);
  } else {
    console.log(2);
  }
};
main(require('fs').readFileSync('/dev/stdin', 'utf8'));