人生苦短,我用python~

# a = int(input().strip())
# b = int(input().strip())
# print(a+b)

a = input().strip()
b = input().strip()

if len(a) > len(b):
    b = "0" * (len(a)-len(b)) + b
else:
    a = "0" * (len(b)-len(a)) + a

result_list = []
ord_0 = ord("0")
add_on = False
for each in range(len(a)):
    atmp = ord(a[len(a)-each-1]) - ord_0
    btmp = ord(b[len(b)-each-1]) - ord_0

    result = atmp + btmp + add_on
    if result >= 10:
        add_on = True
    else:
        add_on = False
    result %= 10
    result_list.append(chr(result + ord_0))
if add_on:
    result_list.append("1")

print("".join(reversed(result_list)))