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:
import sys
FIN = sys.stdin
FOUT = sys.stdout

a, b = map(int, FIN.readline().split())
b = int(str(b)[::-1])
ans = a + b
FOUT.write(str(ans))