// a program which judges whether given three integers, a, b, and c, are a < b < c

import java.util.Scanner

fun main(args:Array<String>){
  val a:Int
  val b:Int
  val c:Int
  val read = Scanner(System.`in`)

  // read three integers
  a = read.nextInt()
  b = read.nextInt()
  c = read.nextInt()

  read.close()

  if( judge(a, b, c) )
    println("Yes")
  else
    println("No")
}


// a function for judging whether given three integers, a, b, and c, are a < b < c
// return value: a < b < c -> true  not a < b < c -> false
fun judge(a:Int, b:Int, c:Int):Boolean{
  if( a < b && b < c )
    return true
  else
    return false
}

