defmodule Main do
  def main do
    n = IO.read(:line) |> String.trim() |> String.last() |> String.to_integer()
    m = IO.read(:line) |> String.trim() |> String.to_integer()
    solve(n, m) |> IO.puts()
  end

  def solve(n, m) do
    cond do
      m == 0 ->
        1

      :else ->
        case n do
          0 ->
            0

          1 ->
            1

          2 ->
            case m |> rem(4) do
              1 -> 2
              2 -> 4
              3 -> 8
              0 -> 6
            end

          3 ->
            case m |> rem(4) do
              1 -> 3
              2 -> 9
              3 -> 7
              0 -> 1
            end

          4 ->
            case m |> rem(2) do
              1 -> 4
              0 -> 6
            end

          5 ->
            5

          6 ->
            6

          7 ->
            case m |> rem(4) do
              1 -> 7
              2 -> 9
              3 -> 3
              0 -> 1
            end

          8 ->
            case m |> rem(4) do
              1 -> 8
              2 -> 4
              3 -> 2
              0 -> 6
            end

          9 ->
            case m |> rem(2) do
              1 -> 9
              0 -> 1
            end
        end
    end
  end
end