using System;

    using System.Collections.Generic;

    public class Program

    {

        public static void Main()

        {

            List<List<List<int>>> myJaggedIntList = new List<List<List<int>>>();

            myJaggedIntList.Add(new List<List<int>>());

            myJaggedIntList[0].Add(new List<int>());

            myJaggedIntList[0][0].Add(3);

            Console.WriteLine(myJaggedIntList[0][0][0].ToString());

        }

    }