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.*;import java.util.*;public class j{public static void main(String a[])throws IOException{Scanner b=new Scanner(System.in);int n,m,i;String s,r,g="\0";s=b.nextLine();StringTokenizer c=new StringTokenizer(s);n=Integer.parseInt(c.nextToken());r=c.nextToken();m=r.length();for(i=m-1;i>=0;i--)g+=(r.charAt(i));System.out.print(n+(Integer.parseInt(g.trim())));}}