Envío 4377

Código

def sum_num(string: str, add: int) -> str:
    if not add:
        return string
    number = []
    i = 0
    while add and i < len(string):
        c, r = divmod(int(string[-i-1]) + add, 10)
        number.append(str(r))
        add = c
        i += 1
    if add:
        number.append(str(add))
    return string[:-i] + "".join(number[::-1])

num = input()
k = int(input())
print(sum_num(num, k))