Envío 5755

Código

def increment():
    big_number_one = list(input())
    big_number_two = list(input())
    increment = 0

    length_one = len(big_number_one)
    length_two = len(big_number_two)

    if length_one < length_two:
        big_number_one, big_number_two = big_number_two, big_number_one
        length_one, length_two = length_two, length_one

    for j in range(1, length_two + 1):
        increment = int(big_number_two[j * -1])
        for i in range(j, length_one + 1):
            number = int(big_number_one[i * -1])

            big_number_one[i * -1] = str(int((number + increment) % 10))
            increment = int((number + increment) / 10)

            if increment == 0:
                break

        if increment:
            big_number_one.insert(0, 1)

    for i in big_number_one:
        print(i, end='')


increment()