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:
(a,b)=[i for i in raw_input().split()]
n=int(a)
c=""
for i in range(len(b)):
    c=b[i]+c
m=int(c)
print(n+m)