defmodule Main do
  def main do
    IO.gets("")
    |> String.trim()
    |> String.split()
    |> Enum.map(&String.to_integer/1)
    |> Enum.sort(:asc)
    |> process()
    |> IO.puts()
  end
  
  defp process([a, b, c]) when a + b == c, do: "Yes"
  defp process(_), do: "No"
end