"use strict";
const Main = (input) =>{
   let xs = input.trim().split(' ').map(v=>parseInt(v,10));
   let HP = xs[0];
   let attack = xs[1];
  
   let ans = xs[0]/xs[1];
   console.log(Math.ceil(ans));


}
Main(require('fs').readFileSync('/dev/stdin','utf8'));