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:
# -*- coding: utf-8 -*-

a,b = raw_input().split(' ')
b = str(''.join(list(b)[::-1]))
print int(a) + int(b)