defmodule Main do
  use Bitwise
  def main do
    n = IO.read(:line) |> String.trim() |> String.to_integer()
    total = IO.read(:line) |> String.trim() |> String.to_integer()
    an = IO.read(:line) |> String.trim() |> String.split(" ") |> Enum.map(&String.to_integer/1)
    solve(n, total, an) |> IO.puts()
  end

  def solve(n, total, an) do
    [a | an] = an
    an
    |> Enum.reduce(Map.put(%{}, a, 0), fn a, dp ->
      Enum.reduce(dp, %{}, fn {acc, wi}, ndp ->
        ndp |> put(acc + a, (wi <<< 1) + 1, total) |> put(acc * a, (wi <<< 1), total)
      end)
    end)
    |> (fn dp ->
      dp[total] |> restore(n) |> Enum.reverse() |> Enum.join("")
    end).()
  end

  def restore(_w, 1), do: []
  def restore(w, i), do: [(if (w &&& 1) == 1, do: :+, else: :*) | restore(w >>> 1 ,i - 1)]

  def put(dp, key, value, total) when key <= total,
   do: if is_nil(dp[key]) || dp[key] < value, do: Map.put(dp, key, value), else: dp
  def put(dp, _key, _value, _total), do: dp
end