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



val () =
    let
        val a = LargeWord.fromLargeInt(readLargeInt ())
        val b = LargeWord.fromLargeInt(readLargeInt ())

        val ans = LargeWord.toLargeInt(LargeWord.orb(a, b)) + LargeWord.toLargeInt(LargeWord.andb(a, b))
    in
        print (LargeInt.toString ans ^ "\n")
    end