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 lee = new Scanner(System.in);
		int a1=lee.nextInt();
		int a2=lee.nextInt();
		int s=0;
		int e=(int) Math.log10(a2);
		while (a2!=0) {
			int d=a2%10;
			s=(int) (s+d*Math.pow(10, e));
			e--;
			a2=a2/10;
		}//while
		System.out.println(s+a1);
	}

}