object Main {
  def main(args: Array[String]) = {
    
    val input: String = readLine()
    val list: Array[String] = input.split(" ")
    
    val a: Int = list(0).toInt
    val b: Int = list(1).toInt
    val c: Int = list(2).toInt

    var ans = "No"
    if (a < b && b < c) {
      ans = "Yes"
    }
    println(ans)
  }
  
//  def readLine(): String = {"5 5"}
}
