using System;

public class Program

{

    public static void Main()

        {

            Console.Write("\nNhap vao so n: ");

            int n = int.Parse(Console.ReadLine());

            Console.WriteLine("\n----- KET QUA -----");

            Console.Write("\nCac so la:  ");

            for (int i = n; i >= 0; i--)

            {

                if (i % 2 == 1)

                {

                    Console.Write( "  "+ i);

                }

            }

        }

    }

​

​