defmodule Ackermann do def ack(0, n), do: n + 1 def ack(m, 0), do: ack(m - 1, 1) def ack(m, n), do: ack(m - 1, ack(m, n - 1)) end [n | tail] = System.argv [m | _] = tail {n, _} = Integer.parse(n) {m, _} = Integer.parse(m) IO.puts Ackermann.ack(n, m)
