Scanf.scanf "%d %d %d %d %d %d" (fun a b c d p q ->
    let rec loop x mix miy mxx mxy =
        if x > q then Printf.printf "%d %d %d %d\n" mxy mxx miy mix else
            let y = a * x * x * x + b * x * x + c * x + d in
            let mix, miy = if y < miy then x, y else mix, miy in
            let mxx, mxy = if y > mxy then x, y else mxx, mxy in
            loop (x + 1) mix miy mxx mxy
    in
    loop p 0 max_int 0 min_int
)