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 Mod2 {

	public static void main(String[] args) {
		System.out.println(new Scanner(System.in).nextInt()%2);

	}

}