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


val () =
    let
        val n = readInt ()

        val ans =
            if (n - 1) mod 6 = 0 then 2
            else if (n - 1) mod 6 = 1 then 8
            else if (n - 1) mod 6 = 2 then 5
            else if (n - 1) mod 6 = 3 then 7
            else if (n - 1) mod 6 = 4 then 1
            else 4
    in
        print (Int.toString ans ^ "\n")
    end