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 Main {


    public static void main(String[] args) {
        Scanner cin = new Scanner( System.in );
        String a = cin.next( );
        String b = cin.next( ), temp ="" ;
        for (int i = b.length()-1; i >=0; i--) {
            temp += String.valueOf( b.charAt(i) );
        }
        System.out.println( Integer.parseInt(a) + Integer.parseInt( temp ) );
    }

}