object Main {
  def main(args: Array[String]): Unit = {
    val sc = new java.util.Scanner(System.in)
    val monsterHitPoint = sc.nextInt()
    val servalAttackPoint = sc.nextInt()

    val ans =
      Math.ceil(monsterHitPoint.toDouble / servalAttackPoint.toDouble).toInt

    println(s"$ans")
  }
}
