using System;

using System.Collections;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        var liste = (IEnumerable<object>)MachinQuiListe();

        Console.Out.WriteLine(liste.Count());

    }

    private static IEnumerable MachinQuiListe()

    {

        return new List<string> (){

            "toto", "titi"};

    }

}