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.StringTokenizer;


public class tehculpraktis {

	public static void main(String[] args) throws Exception{
		BufferedReader f = new BufferedReader(new InputStreamReader(System.in));

		StringTokenizer st = new StringTokenizer(f.readLine());
		
		int x = Integer.parseInt(st.nextToken());
		String y = st.nextToken();
		
		int tronalddump = x;
		
		for(int i = 0; i<y.length(); i++){
			tronalddump += Integer.parseInt(y.substring(i, i+1)) *(Math.pow(10, i));
		}
		
		System.out.println(tronalddump);
	}

}