using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        var random = new Random();

        var list = new List<string> { "1", "2", "3", "4", "5", "6", "7", "8", "9", "10"  };

        var newList1 = new List<string>();

        var newList2 = new List<string>();

        while(list.Count > 0)

        {

            //choose the index randomly

            int index = random.Next(list.Count);

            //get the item at the randomly chosen index

            string curItem = list[index];

            //choose the list randomly(1==newList1, 2==newList2)

            int listChoice = random.Next(2);

            //Add the item to the correct list

            if(listChoice == 1)

            {

                newList1.Add(curItem);

            }

            else

            {

                newList2.Add(curItem);

            }

            //finally, remove the element from the string

            list.RemoveAt(index);

        }

        Console.WriteLine("List 1 contents:");

        foreach(var cur in newList1)

        {

            Console.WriteLine(cur);

        }

        Console.WriteLine("List 2 contents:");

        foreach(var cur in newList2)

        {

            Console.WriteLine(cur);

        }

    }

}