

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.util.Scanner;

public class CF1 {

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