05. Tear List in Half

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Text.RegularExpressions;

namespace Extended
{
    class Program
    {
        static void Main(string[] args)
        {

            List<string> list = Console.ReadLine().Split(' ').ToList();
            List<string> bottom = new List<string>();
            List<string> up = new List<string>();
            List<string> res = new List<string>();

            int len = list.Count;

            for (int i = 0; i < len / 2; i++)
            {
                bottom.Add(list[i]);
            }

            for (int i = len / 2; i < len; i++)
            {
                up.Add(list[i]);
            }

            string re = string.Join("", up);


            for (int i = 0; i < bottom.Count; i++)
            {
                res.Add(re[i * 2].ToString());
                res.Add(bottom[i]);
                res.Add(re[i * 2 + 1].ToString());
            }
            Console.WriteLine(string.Join(" ", res));
        }
    }
}