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import fileinput

f = fileinput.input()
a = f.readline()
b = f.readline()

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

a_b = ""
add = 0
for ac, bc in zip(reversed(a.strip()), reversed(b.strip())):

    a_b += str((int(ac) + int(bc) + add) % 10)
    add = (int(ac) + int(bc) + add) // 10

res = ""
for x in reversed(a_b):
    res += x

print(res)