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.Arrays;
import java.util.Scanner;

public class ap01 {

    public static void debug(Object... obs)
    {
        System.out.println(Arrays.deepToString(obs));
    }

    public static void main(String[] args)
    {
        Scanner sc = new Scanner(System.in);
        
        String a=sc.next();
        String b=sc.next();
        
        StringBuilder sb=new StringBuilder(b);
        sb.reverse();
        b=sb.toString();
        System.out.println(Integer.parseInt(a) + Integer.parseInt(b));
    }
}