'use strict'


function Main(input) {
  input = input.trim().split(' ')
  const H = parseInt(input[0])
  const A = parseInt(input[1])

  if (H < A) {
    console.log(1)
    return
  }

  let total = Math.round(H / A)
  // if (10 % 4 !== 0) total++


  console.log(total)
 
}
Main(require("fs").readFileSync("/dev/stdin", "utf8"));