defmodule Main do
  def main do
    [a, b] = input() |> String.split(",") |> Enum.map(&String.to_integer/1)
    IO.puts "a + b = #{a+b}"
  end

  def input, do: IO.read(:line) |> String.trim
  def ii, do: input() |> String.to_integer
  def li, do: input() |> String.split |> Enum.map(&String.to_integer/1)
end