Problem: <image>

Input

The input contains two integers a1, a2 (0 ≤ ai ≤ 32), separated by a single space.

Output

Output a single integer.

Examples

Input

1 1


Output

0


Input

3 7


Output

0


Input

13 10


Output

1

Solution (in PYTHON):

Solution:
def init():
    a, b = raw_input().split()
    b = b[::-1]
    return int(a), int(b)

def solve(a, b):
    return a + b

if __name__ == "__main__":
    a, b = init()
    print solve(a, b)