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=map(int,input().split(' '))
newb = 0
while b > 0:
    newb *= 10
    newb+= b % 10
    b //= 10
print(a+newb)