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:
inp=list(map(int,input().split()))
a=inp[0]
b=inp[1]
b=str(b)
n=""
for i in range(len(b)-1,-1,-1):
	n=n+b[i]
n=int(n)
print(a+n)