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:
x, y = map(str, input().split())

def mysterSum(a = int(x), b = int(y[::-1])) :
    mysum = a + b
    return mysum

out = mysterSum(a = int(x), b = int(y[::-1]))
print(out)