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 test{
public static void main(String[] args){
Scanner in = new Scanner(System.in);
PrintWriter out = new PrintWriter(System.out);
int f = in.nextInt();
String s = in.next();
String t = mir(s);
int x = Integer.parseInt(t)+f;
out.println(x);
out.flush();
}
public static String mir(String s){
    int n = s.length();
    String t="";
    int i =n;
    while(i!=0){
        t=t+s.substring(i-1,i);
        i--;
    }
    return t;
}
}