fun readInt () =
    valOf (TextIO.scanStream (Int.scan StringCvt.DEC) TextIO.stdIn)


val () =
    let
        val n = readInt ()

        exception E
        exception Found of (int * int)
        fun findAns i j =
            if 10 < i then raise E
            else if 10 < j then findAns (i + 1) 1
            else if i + j = n then raise Found (i, j)
            else findAns i (j + 1)
    in
        (findAns 1 1)
        handle Found (a1, a2) => print (Int.toString a1 ^ " " ^ Int.toString a2 ^ "\n")
    end