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.io.*;

public class Main {

    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
//        StringTokenizer st = new StringTokenizer(br.readLine());
        PrintWriter out = new PrintWriter(new BufferedOutputStream(System.out));

        int n = Integer.valueOf(br.readLine());
        if (n % 2 == 0) out.println("0");
        else out.println("1");

        out.close();
    }
}