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 PYTHON3):

Solution:
def mysterious_numbers(x, y):
    result = 0
    z = int(y)
    while z > 0:
        result = result * 10 + (z % 10)
        z = z // 10

    return int(x) + result


if __name__ == '__main__':
    x, y = input().split()
    print (mysterious_numbers(x, y))