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 Solution {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        
        int a1 = sc.nextInt();
        int a2 = sc.nextInt();
        
        int number = 0;
        
        while(a2 > 0) {
            number = number*10 + a2%10;
            a2 = a2/10;
        }
        
        int ans = a1 + number;
        
        System.out.println(ans);
    }
}