let () =
  let n = Scanf.scanf "%d " (fun a -> a) in
  let d,x = Scanf.scanf "%d %d " (fun a b -> a,b) in
  let a_lst = Array.to_list @@ Array.init n (fun _ -> Scanf.scanf "%d " (fun a -> a)) in

  let tmp = List.map (fun x -> ((d-1)/x)+1) a_lst in
  let ans = List.fold_left (+) 0 tmp in

  Printf.printf "%d\n" @@ ans + x
