package no085;

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int m = sc.nextInt();
		int c = sc.nextInt();
		System.out.println(solve(n,m,c) ? "YES" : "NO");
	}

	public static boolean solve(int n,int m,int c) {
		if ((n*m)%2==1) {
			return false;
		}
		if (n == 1 || m == 1) {
			return false;
		}
		return true;
	}

}