import scala.io.StdIn._

object Main extends App {
  val n         = readInt()
  val Seq(d, x) = readLine().split(" ").map(_.toInt).toSeq
  val a         = (1 to n).map(_ => readInt())
  println(a.map(i => (0 until d).count(_ * i + 1 <= d)).sum + x)
}
