import java.util.*;
import java.lang.*;
import java.io.*;

class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		int n;
		Scanner in = new Scanner(System.in);
	        
		n = in.nextInt();
	    
		if (n%2==0) {
	    		System.out.println("No");
		}
		else {
	    		System.out.println("Yes");
		}
	}
}