object Main {
  def main(args: Array[String]) = {
    val a = io.StdIn.readLine.toInt
    val b = io.StdIn.readLine.toInt
    val c = io.StdIn.readLine.toInt
    val list = List(a, b, c).permutations.toList

    println(if (list.exists { x => (x(0) + x(1)) == x(2) }) "Yes" else "No")
  }
}