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