fun main(args: Array<String>){
	Range()
}

fun Range(){
	val abc = readLine()!!.split(" ").map(String::toInt)
	val a = abc[0]
	val b = abc[1]
	val c = abc[2]
	when{
		a<b && a<c && b<c ->{
			println("Yes")
		}
		else ->{
			println("No")
		}
	}
}
