题解 | #高精度整数加法#

digits1 = [int(i) for i in input()]
digits2 = [int(i) for i in input()]
carry = 0
digits3 = []
while digits1 or digits2 or carry:
    if digits1:
        carry += digits1.pop()
    if digits2:
        carry += digits2.pop()
    digits3.append(carry % 10)
    carry //= 10    
res = ""
while digits3:
    res += str(digits3.pop())
print(res)