using System;

using System.Collections.Generic;               

public class Program

{

    public static void Main()

    {

        //angka

        int [] angka = {2, 5, 6, 8, 9, 10};

        List<int> num = new List<int>(angka);   

        //print all

        foreach(int i in num)

            Console.Write(i + " ");

        Console.WriteLine("");

        //remove 6

        num.Remove(6);

        Console.WriteLine("");

        foreach(int i in num)

            Console.Write(i + " ");

        Console.WriteLine("");

        //add 65

        num.Add(65);

        Console.WriteLine("");

        foreach(int i in num)

            Console.Write(i + " ");

        Console.WriteLine("");

        //print multiply index 1 and 3

        Console.WriteLine("");

        Console.Write(num[1]*num[3]);

        Console.WriteLine("");

        //Sort list

        num.Sort();

        Console.WriteLine("");

        foreach(int i in num)

            Console.Write(i + " ");

        Console.WriteLine("");

        //Reverse list

        num.Reverse();

        Console.WriteLine("");

        foreach(int i in num)

            Console.Write(i + " ");

        Console.WriteLine("");

    }

}