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.*;

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