import java.io.{BufferedReader, InputStreamReader}

object Main {
  def main(args: Array[String]): Unit = {
    val in = new BufferedReader(new InputStreamReader(System.in))
    val Array(h, a) = in.readLine().split("\\s+").map(_.toInt)

    System.out.println(
      (h / a) + (if (h % a == 0) 0 else 1)
    )
  }
}
