
object Main extends App {
  val inputs: Seq[String] = scala.io.Source.stdin.getLines().toList
  
  val nums = inputs.head.split(" ").map(_.toInt)
  val sum = nums(0) + nums(1)
  val dis = nums(0) - nums(1)

  println(if (sum == nums(2) || dis == nums(2)) { "Yes" } else { "No" })
}