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


fun makeAns n =
    let
        fun makeAnsAux current =
            if 720 <= current
            then #"C" :: makeAnsAux (current - 720)
            else if 360 <= current
            then #"M" :: makeAnsAux (current - 360)
            else if 180 <= current
            then #"S" :: makeAnsAux (current - 180)
            else if 30 <= current
            then #"R" :: makeAnsAux (current - 30)
            else if 6 <= current
            then #"o" :: makeAnsAux (current - 6)
            else if 1 <= current
            then #"." :: makeAnsAux (current - 1)
            else []
    in
        String.implode (makeAnsAux n)
    end


val () =
    let
        val n = readInt ()

        val ans = makeAns n
    in
        print (ans ^ "\n")
    end