import scala.io.StdIn

object Main extends App {
  val input = StdIn.readLine().split(" ").map(_.toInt)
  val ret = if(isSame(input(0), input(1), input(2))) "Yes" else "No"
  println(ret)

  def isSame(a: Int, b: Int, c: Int): Boolean =
    if (a == b && b == c) true else false
}