let n, d, x = Scanf.scanf " %d %d %d" @@ fun a b c -> a, b, c
let a_s = Array.init n @@ fun _ -> Scanf.scanf " %d" @@ (+) 0
let _ = Array.fold_left (fun c a -> c + 1 + (d - 1) / a) x a_s |> Printf.printf "%d\n"