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.Scanner;
public class flip {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		System.out.println(sc.nextLong()+Long.parseLong(new StringBuilder(sc.next()).reverse().toString()));
		
		
	}

}