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:
import sys

a, b = tuple(sys.stdin.readline().split()) # get the number of test cases
b = int(b[::-1])
print int(a) + b