'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 = H
  let count = 0
  while(total > 0) {
    total -= A
    count++
  }


  console.log(count)

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