import java.util.Scanner

object Main {
  def main(args: Array[String]): Unit = {
    val sc = new Scanner(System.in)
    val n, d, x = sc.nextInt()
    val as = List.fill(n)(sc.nextInt())

    var ans = x
    as.foreach(a => {
      for (i <- 0 to d) {
        if (1 + i * a <= d) ans += 1
      }
    })

    println(ans)
  }
}
