

Input

The input contains a single integer a (10 ≤ a ≤ 999).

Output

Output 0 or 1.

Examples

Input

13


Output

1


Input

927


Output

1


Input

48


Output

0
import java.io.*;
public class bot {
    public static void main (String [] args)throws Exception {
        BufferedReader x = new BufferedReader(new InputStreamReader(System.in));
        System.out.println(Integer.parseInt(x.readLine())%2);
    }
}