using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        List<int> myList = new List<int>(10) {10, 20, 30};

        myList.Add(40);

        List<int> otherList = new List<int>() {50, 60, 70};

        myList.AddRange(otherList);

        //Insert

        myList.Insert(7, 80);

        //Insert Range

        List<int> otherList2 = new List<int>() {90, 100, 200};

        myList.InsertRange(8, otherList2);

        foreach (int i in myList) {

            Console.WriteLine(i);

            Console.WriteLine();

        }

        Console.WriteLine("---");

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

            Console.WriteLine(myList[i]);

            Console.WriteLine();

        }

    }

}