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:
if __name__ == "__main__":
    data = raw_input()
    a1, a2 = data.strip().split()
    a2 = a2[::-1]
    print int(a1) + int(a2)