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:
c = input().split()
a = c[0]
b = c[1]
b2 = ""
for i in range(1,len(b)+1):
    b2 += b[-i]
print(int(a)+int(b2))