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.Scanner;
public class Main {

	public static void main(String[] args) {
		Scanner leer=new Scanner(System.in);
		long a=leer.nextLong();
		long b=leer.nextLong();
		long num=0;
		while (b>0) {
			num=num*10+(b%10);
			b/=10;
		}
		System.out.println(a+num);		
				
	}

}