`Fix emails

using System;
using System.Collections.Generic;

namespace P7_FixEmails
{
    class Program
    {
        static void Main()
        {
            string name = Console.ReadLine();
            SortedDictionary<string, string> dict = new SortedDictionary<string, string>();
            while (name != "stop")
            {
                string email = Console.ReadLine().Trim();
                string endOfEmail = email.Substring(email.Length - 2, 2).ToLower();
                if (endOfEmail != "us" && endOfEmail != "uk")
                {
                    if (!dict.ContainsKey(name))
                    {
                        dict.Add(name, email);
                    }
                    else
                    {
                        dict[name] = email;
                    }
                }
                name = Console.ReadLine();
            }
            foreach (var item in dict)
            {
                Console.WriteLine($"{item.Key} -> {item.Value}");
            }
        }
    }
}