// abc092-b.scala
object Main extends App {
  val n = io.StdIn.readInt
  val Array(d,x) = io.StdIn.readLine.split(" ").map(_.toDouble)
  val as = for (_ <- 1 to n) yield io.StdIn.readInt

  val result = x + as.map(ai => (d/ai).ceil).sum
  println(result.toInt)
}