defmodule Main do
  def main do
    [s, f] = IO.gets("")
              |> String.trim
              |> String.split(" ")
              |> Enum.map(&String.to_integer/1)
    Float.ceil(s/f)
    |> Kernel.trunc
    |> add_one
    |> IO.puts
  end
  def add_one(x), do: x + 1
end