using System;

using System.Collections.Generic;

​

public class Program

{

    public static void Main()

    {

        Console.Write("n = ");

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

        LinkedList<int> nums = new LinkedList<int>();

        Console.WriteLine("Enter the numbers:");

        for(int i = 0; i < n; i++)

        {

            nums.AddFirst(int.Parse(Console.ReadLine()));

        }

        Console.WriteLine(String.Join(" ", nums));

        nums.AddAfter(nums.First, 0);

        LinkedListNode<int> node = nums.First;

        bool thereIsOddNum = false;

        for(int i = 0; i < nums.Count; i++) 

        {

            if(node.Value % 2 == 1) 

            {

                nums.AddAfter(node, 0);

                thereIsOddNum = true;

                break;

            }

            node = node.Next;

        }

        Console.WriteLine(String.Join(" ", nums));

        if(!thereIsOddNum) 

        {

            Console.WriteLine("There is no odd number!");

        }

    }

}