import java.util.Scanner;
public class Yuki85{
	public static void main(String[] arg){
		Scanner sc = new Scanner(System.in);
		int n,m,c;
		n = sc.nextInt();
		m = sc.nextInt();
		c = sc.nextInt();
		if((n % 2 == 0 || m % 2 == 0 )&& n != 1 && m != 1){
			System.out.println("YES");
		}else{
			System.out.println("NO");
		}
	}
}