"use strict";
function main(input) {
  let kari = input[0].trim().split(" ");

  let kari2 = kari.map(i => parseInt(i));

  let h = kari2[0];
  let a = kari2[1];

  console.log(Math.ceil(h / a));
}
main(require('fs').readFileSync('/dev/stdin', 'utf8').trim().split("\n"));