let n = stdin.ReadLine () |> int64

if n < 8L then
    if n = 6L then
        3, n-3L
    else
        -1, 0L
else
    if n % 4L = 3L then
        5, n-5L
    else
        3, n-3L
|> (fun (a, b) -> if a = -1 then printfn "-1" else printfn "%d %d" a b)