Scanf.scanf "%d %d %d" (fun n w d ->
    let proc list =
        let arena = Array.make (w + 1) (-1) in
        arena.(0) <- 0;
        List.iter (fun (w0, v0) ->
            for i = w downto w0 do
                if arena.(i - w0) >= 0 then
                    arena.(i) <- max arena.(i) (arena.(i - w0) + v0)
            done
        ) list;
        arena
    in
    let rec loop i list0 list1 =
        if i = n then proc list0, proc list1 else
            let t, w, v = Scanf.scanf " %d %d %d" (fun t w v -> t, w, v) in
            if t = 0 then loop (i + 1) ((w, v) :: list0) list1 else
                          loop (i + 1) list0 ((w, v) :: list1)
    in
    let arena0, arena1 = loop 0 [] [] in
    let rec loop0 i0 mx =
        let rec loop1 i1 mx =
            if i0 + i1 > w || i1 > i0 + d then loop0 (i0 + 1) mx else
                let mx = if arena1.(i1) >= 0 then max mx (arena0.(i0) + arena1.(i1)) else mx in
                loop1 (i1 + 1) mx
        in
        if i0 > w then mx else
            if arena0.(i0) < 0 then loop0 (i0 + 1) mx else
            loop1 (max 0 (i0 - d)) mx
    in
    Printf.printf "%d\n" @@ loop0 0 0
)