let inline scan () = System.Console.ReadLine()
let inline split (s: string) = s.Split(' ')

let n = scan () |> int
let (d, x) = scan () |> split |> (fun x -> (int x.[0], int x.[1]))
  
[ for i in 1 .. n do
    let a_i = scan () |> int
    yield (d - 1) / a_i + 1
] |> Seq.sum |> ((+) x) |> printfn "%i"

