defmodule Main do
  def main do
    IO.gets("")

    a =
      IO.gets("")
      |> String.trim()
      |> String.split()
      |> Enum.map(&String.to_integer(&1))

    a
    |> (&([Enum.slice(&1, 0..-2), Enum.slice(&1, 1..-1)] |> List.zip())).()
    |> Enum.map(fn {x, y} -> y - x end)
    |> Enum.min()
    |> IO.puts()

    (List.last(a) - List.first(a))
    |> IO.puts()
  end
end