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.io.File;
import java.io.FileNotFoundException;
import java.math.BigInteger;
import java.util.Scanner;
public class A171{
    public static void main(String[] args) throws FileNotFoundException{
 
        Scanner scan = new Scanner(System.in);
        int n = scan.nextInt();
        String m = scan.next();
        StringBuilder temp = new StringBuilder();
        temp.append(m);
        temp.reverse();
        int a = Integer.parseInt(temp.toString());
        System.out.println(n + a);
        
    }
}