def main():

    def f(N):
        if N % 5 == 0 and N % 3 == 0:
            return 8
        if N % 5 == 0 or N % 3 == 0:
            return 4
        return len(str(N))

    print(sum(f(int(x)) for x in input().split()))


if __name__ == '__main__':
    main()