defmodule Main do
  def main do
    IO.gets("")
    |> String.split("", trim: true)
    |> Enum.frequencies()
    |> Enum.all?(fn {_, elem} -> rem(elem, 2) == 0 end)
    |> case do
      true ->
        "Yes"
      false ->
        "No"
     end
     |> IO.puts()
  end
end