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.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.Collections;
import java.util.Scanner;


public class Main {

    /**
     * @param args
     * @throws IOException 
     */
    public static void main(String[] args) throws IOException {
        // TODO Auto-generated method stub
        BufferedReader in=new BufferedReader(new InputStreamReader(System.in));
        //Scanner in=new Scanner(System.in);
        PrintWriter out=new PrintWriter(System.out);
        String[] f=in.readLine().split(" ");
        StringBuffer h=new StringBuffer(f[1]);
        h.reverse();
        out.println(Integer.parseInt(f[0])+Integer.parseInt(h.toString()));
        out.close();
    }

}