fun readLargeInt () =
    valOf (TextIO.scanStream (LargeInt.scan StringCvt.DEC) TextIO.stdIn)


val () =
    let
        val a = readLargeInt ()
        val b = readLargeInt ()
                                 
        val ans = if a * 1000 > b * 60 * 60 then "KoD"
                  else if a * 1000 = b * 60 * 60 then "same"
                  else "blackyuki"
    in
        print (ans ^ "\n")
    end