def fizzbuzz_len(i):
    if i % 15 == 0:
        return 8
    elif i % 3 == 0:
        return 4
    elif i % 5 == 0:
        return 4
    else:
        return len(str(i))

a = list(map(int, input().split()))

print(sum(list(map(fizzbuzz_len, a))))