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;

public class Main {

    public static void main(String[] args) {
        Scanner cv=new Scanner(System.in);
        int n=cv.nextInt();
        if (n%2==0)
            System.out.println(0);
        else
            System.out.println(1);
    }
}