defmodule Main do
  def main do
    {n1, n2} = input()
    Enum.sum(n2)
  end
  def input() do
    n1 = IO.gets("") |> String.trim |> String.to_integer
    n2 = IO.gets("") |> String.trim |> String.split |> Enum.map(&String.to_integer/1)
    {n1, n2}
  end
end