import sys

a1 = [int(x) for x in input()]
a2 = [int(x) for x in input()]

# 保证a1的长度小
if len(a1) > len(a2):
    a1,a2 = a2,a1

l1 = len(a1)
l2 = len(a2)
res = [0]*l2
a1.reverse()
a2.reverse()

for i in range(l2):
    if i < l1:
        res[i] += a1[i]
    if i < l2:
        res[i] += a2[i]

for i in range(l2-1):
    if res[i] >= 10:
        res[i] = res[i]%10
        res[i+1]+=1

if res[-1]>=10:
    res[-1] = res[-1]%10
    res.append(1)
res = ''.join(map(str,res[::-1]))
print(res)