defmodule Main do
  def mfizzbuzz([0, _, _]), do: 1
  def mfizzbuzz([_, 0, _]), do: 1
  def mfizzbuzz([_, _, 0]), do: 1
  def mfizzbuzz([_, _, _]), do: 0

  def main do
    i = IO.gets("") |> String.trim |> String.to_integer
    [a, b, c] = IO.gets("") |> String.trim |> String.split |> Enum.map(&String.to_integer/1)
    1 .. i
      |> Enum.reduce(0, fn x, acc -> mfizzbuzz([rem(x, a), rem(x, b), rem(x, c)]) + acc end)
      |> IO.puts
  end
end