using System;

using System.Collections.Generic;                   

public class Program

{

    public static void Main()

    {

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

        int iSize = 0;

        Console.WriteLine("How big is the list you want?");

        iSize = int.Parse(Console.ReadLine());

        for(int i = 0;i < iSize;i++)

        { 

        Console.WriteLine("Please enter in a value: ");

            numbers.Add(int.Parse(Console.ReadLine()));

        }

        foreach(int number in numbers)

        {

        Console.WriteLine(number + " ");

        }

        Console.WriteLine("The numer of the items in the list: " + numbers.Count);

        Console.WriteLine("The item in position 3 is : " + numbers[3]);

        if(numbers.Conains(30)

           {}

    }

}