Scanf.scanf "%d %d" (fun l n ->
    let w = Array.init n (fun _ -> Scanf.scanf " %d" (fun w -> w)) in
    Array.sort compare w;
    let rec loop i sum =
        if i = n then i else
            if sum + w.(i) <= l then loop (i + 1) (sum + w.(i))
                else i
    in
    loop 0 0 |> Printf.printf "%d\n"
)