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 A_Mysterious_numbers_1 {
public static void main(String[] args) {
    Scanner sc= new Scanner(System.in);
    int n=sc.nextInt();
    String s=sc.next();
    StringBuffer f=new StringBuffer(s);
    f=f.reverse();
    System.out.println(n+Integer.parseInt(f.toString()));
}
}