for (int P = 10; P >= 0; P--)
            {
                Console.WriteLine(P);
            }
-----------------------------------------------
int PocetOpakovani = Int32.Parse(Console.ReadLine());
            int max = Int32.Parse(Console.ReadLine());
            int vstup;
            for (int P = 1; P < PocetOpakovani; P++)
            {
                vstup = Int32.Parse(Console.ReadLine());
                if (max < vstup)
                    max = vstup;
            }
            Console.WriteLine();
            Console.WriteLine(max);
-----------------------------------------------
int PocetOpakovani = Int32.Parse(Console.ReadLine());

            double Soucet = 0;
            for (int P = 1; P <= PocetOpakovani; P++)
            {
                Soucet += Double.Parse(Console.ReadLine());

            }
            Console.WriteLine();
            Console.WriteLine(Soucet/PocetOpakovani);