using System;

using System.Collections.Generic;

using System.Linq;

​

public class Program

{

    public static void Main()

    {

      (string nom, string prénom) [] gens = new[]

      {

         ("Nguyen", "Bill"), ("roy", "Patrice"), ("Roberge", "William"),

         ("Rousseau", "Nathan"), ("gendron", "Étienne"),

         ("barakatt", "maxime"), ("Charland", "Alexandre")

      };

      foreach(var (nom, prénom) in gens.Where(p => p.nom.Length > 0 && char.IsUpper(p.nom[0]))

                                       .OrderBy(p => p.nom)

                                       .TakeLast(3))

          Console.WriteLine($"{nom} {prénom}");

    }

}