defmodule Main do
  def main do
    IO.read(:line)
    |> String.trim()
    |> String.split()
    |> solve
    |> IO.puts()
  end

  def solve([a, b, c]) do
    "#{ok?(a, b, c, 1)}#{ok?(a, b, c, 4)}"
  end

  def ok?(a, b, c, lack) do
    cond do
      [a, b, c]
      |> Enum.map(fn x ->
        case x do
          "?" -> lack
          _ -> x |> String.to_integer()
        end
      end)
      |> (fn [a, b, c] ->
            a != b && b != c && c != a &&
                ([a, b, c] |> Enum.max() == b || [a, b, c] |> Enum.min() == b)
          end).() ->
        lack

      true ->
        ""
    end
  end
end