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:
a , b = [int(x) for x in input().split()]
new = str(b)
rev = ""
for i in range(len(new)):
    rev+=new[len(new)-i-1]
print(int(rev)+a)