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:
__author__ = 'MARI'

def reverse(a):
    b = 0
    while (a > 0):
        b*=10
        b+=a%10
        a//=10
    return b


def main():
    a, b = [int(x) for x in input().split()]
    print(a + reverse(b))

if __name__ == '__main__':
    import sys

    argv = sys.argv
    main()