defmodule Main do
  def main do
    IO.read(:line)
    |> String.trim()
    |> String.to_integer()
    |> solve
    |> IO.puts()
  end

  def solve(k) do
    [2, 3, 5, 7, 11, 13]
    |> Enum.count(fn p -> k |> rem(p) == 0 && (k |> div(p)) in [4, 6, 8, 9, 10, 12] end)
    |> (&(&1 / 36)).()
  end
end