Qual a saída para o programa Python 3 abaixo?

            x={}

            x[(5,7,6)] = 7

            x[(4,1,1)] = 5

            x[(7,5)] = 4

            x[(4,1,1)] = 0

            total = 0

            for i in x:

                total=total+x[i]

            print(len(x)+total)