题解 | #高精度整数加法#

i1 = input()
i2 = input()
# print(int(i1) + int(i2))
i1 = list(i1)[::-1]
i2 = list(i2)[::-1]

l = max(len(i1), len(i2))
outList = []
addSet = 0
for i in range(l):
    if not i1:
        n1 = 0
        n2 = int(i2.pop(0))
    elif not i2:
        n1 = int(i1.pop(0))
        n2 = 0
    else:
        n1 = int(i1.pop(0))
        n2 = int(i2.pop(0))
    curNum = n1 + n2 + addSet
    addSet = curNum // 10
    curStr = str(curNum % 10)
    outList.append(curStr)

if addSet:
    outList.append(str(addSet))

print("".join(outList[::-1]))