int numar;
            numar = Convert.ToInt32(Console.ReadLine());
            int numarInitial, numarInvers = 0;
            numarInitial = numar;
            while(numar > 0)
            {
                int c = numar % 10;
                numarInvers = numarInvers * 10 + c;
                numar = numar / 10;
            }
            if (numarInitial == numarInvers)
                Console.WriteLine("Da");
            else
                Console.WriteLine("Nu");