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a, b = input(), input()

a = ('0'*4999 + a)[-5000:]
b = ('0'*4999 + b)[-5000:]

a, b = int(a[:2000]) + int(b[:2000]), int(a[2000:]) + int(b[2000:])

if a == 0:
    print(b)
    exit()

if len(str(b)) == 3001:
    a += int(str(b)[0])
    b = int(str(b)[1:])

print(a, b, sep='')