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 A
{
	public static void main(String args[])
	{
		Scanner scan = new Scanner(System.in);

		int rtn = scan.nextInt();
		rtn += Integer.parseInt((new StringBuffer(scan.next())).reverse().toString());
		System.out.println(rtn);
	}
}