public static int MainMethod(string[] args)
        {
            dynamic   d   = new US();
            List <US> col = new List <US>
            {
                d, d
            }

            ;

            return(0);
        }
        public static int MainMethod(string[] args)
        {
            dynamic d = new US();
            List<US> col = new List<US>
            {
            d, d
            }

            ;
            return 0;
        }