public static void Main(string[] agrs)
        {
            string line = Console.ReadLine ();
            var values = line.Split (' ');

            ContextStrategy cs = new ContextStrategy (Convert.ToInt32 (values [2]));

            int result = cs.GetValue (Convert.ToInt32(values[0]),Convert.ToInt32(values[1]));

            Console.WriteLine (result);
        }
        public static void Main(string[] agrs)
        {
            string line   = Console.ReadLine();
            var    values = line.Split(' ');

            ContextStrategy cs = new ContextStrategy(Convert.ToInt32(values [2]));

            int result = cs.GetValue(Convert.ToInt32(values[0]), Convert.ToInt32(values[1]));

            Console.WriteLine(result);
        }