let read () = Scanf.scanf "%d " (fun i -> i)

let () =
  let n = read () in
  let c = Array.init n (fun _ -> read ()) in
  let z = Array.fold_left (+) 0 c / 10 in
  Array.fold_left (fun s c -> s + if c <= z then 30 else 0) 0 c
  |> Printf.printf "%d\n"