How to read from STDIN in Elixir (for HackerRank)

example.ex

defmodule Solution do
#Enter your code here. Read input from STDIN. Print output to STDOUT
end

array_length = IO.read(:stdio, :line)
array = IO.read(:stdio, :line)

array_length
    |> String.trim
    |> String.to_integer
    |> IO.puts

array
    |> String.split(" ")
    |> Enum.map(fn n -> String.to_integer(n) end)
    |> IO.inspect