List\Merging Lists

using System;
using System.Linq;
using System.Collections.Generic;

namespace fundamental14
{
    class MainClass
    {
        public static void Main()
        {

        List<double> listOne = Console.ReadLine().Split().Select(double.Parse).ToList();

        List<double> listTwo = Console.ReadLine().Split().Select(double.Parse).ToList();

        List<double> merginList = new List<double>();

        if (listOne.Count >= listTwo.Count)
        {

            for (int i = 0; i < listTwo.Count; i++)
            {
                merginList.Add(listOne[i]);
                merginList.Add(listTwo[i]);
            }

            for (int i = listTwo.Count; i < listOne.Count; i++)
            {
                merginList.Add(listOne[i]);
            }
        }
        else
        {

            for (int i = 0; i < listOne.Count; i++)
            {
                merginList.Add(listOne[i]);
                merginList.Add(listTwo[i]);
            }

            for (int i = listOne.Count; i < listTwo.Count; i++)
            {
                merginList.Add(listTwo[i]);
            }
        }


       Console.WriteLine(string.Join(" ", merginList));

        }
    }
}