object A_Happy_Birthday extends App {

  import scala.math._

  val In = io.StdIn.readLine().split(" ")
  val a = In(0).toInt
  val b = In(1).toInt

  if ( abs(a-b)*2 <= List(a,b).min *2 ) {
    println("Yay!")
  } else {
    println(":(")
  }

}
