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import sys


def _debug(*args):
    print(*args, file=sys.stderr)


def sum(left: str, right: str) -> str:

    def gen():
        rleft = reversed(left)
        rright = reversed(right)
        carry = 0
        while True:
            left_digit, right_digit = next(rleft, None), next(rright, None)
            sum = int(left_digit or 0) + int(right_digit or 0) + carry
            if sum >= 10:
                yield sum - 10
                carry = 1
            elif left_digit is None and right_digit is None:
                if sum:
                    yield sum
                return
            else:
                yield sum
                carry = 0

    return ''.join(reversed([str(x) for x in gen()]))


def main():
    a = sys.stdin.readline().strip()
    b = sys.stdin.readline().strip()
    r = sum(a, b)
    sys.stdout.write(str(r))
    sys.stdout.flush()


if __name__ == '__main__':
    main()