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 JAVA):

Solution:
import java.util.*;
public class Main 
{
	public static void main(String[] args)
	{
		Scanner input = new Scanner(System.in);
		System.out.println(input.nextInt() + new Integer(new StringBuilder(input.next()).reverse().toString()));
	}
}