using System;

namespace y
{
    class Program
    {
        static void Main(string[] args)
        {
            var ss = Console.ReadLine().Split();
            var n = int.Parse(ss[0]);
            var m = int.Parse(ss[1]);
            var c = int.Parse(ss[2]);

            if (n == 1 || m == 1) Console.WriteLine("NO");
            else if (n % 2 == 1 && m % 2 == 1) Console.WriteLine("NO");
            else Console.WriteLine("YES");
        }
    }
}