object Main extends App {
  val sc = new java.util.Scanner(System.in)
  val a,b,c = sc.nextInt
  val res = if(a < b && b < c) "Yes"
  else "No"
  println(res)

// 結果
// List(List(123, 456, 789), List(111, 222, 333), List(1, 2, 3), List(63, 72, 81), List(100, 200, 300))
}
