Problem: 

Input

The input contains a single integer a (0 ≤ a ≤ 35).

Output

Output a single integer.

Examples

Input

3


Output

8


Input

10


Output

1024

Solution (in JAVA):

Solution:

import java.util.Scanner;

/**
 *
 * @author o-i-i-
 */
public class JavaApplication58 {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
     if(in.nextInt()%2==0){
         System.out.println("0");
     }else {
         System.out.println("1");
     }
    
    }
    
}