fun readStr () =
    let
        fun scan reader stream = SOME (StringCvt.splitl (not o Char.isSpace) reader (StringCvt.skipWS reader stream))
    in
        valOf (TextIO.scanStream scan TextIO.stdIn)
    end
    

val () =
    let
        val s1 = readStr ()
        val s2 = readStr ()

        fun isSatOrSun s =
            s = "Sat" orelse s = "Sun"

        val ans =
            if isSatOrSun s1 andalso isSatOrSun s2 then "8/33"
            else if isSatOrSun s1 then "8/32"
            else "8/31"
    in
        print (ans ^ "\n")  
    end