using System;

using System.Collections.Generic;

​

//public record User(string Id, string Email);

​

public class User

{

    public string Id { get; set; }

    public string Email { get; set; }

    public User(string id, string email)

    {

        Id = id;

        Email = email;

    }

}

public class Program

{

    public static void Main()

    {

        var user1 = new User("1111", "bob@example.com");

        var user2 = new User("2222", "jane@example.com");

        var user3 = new User("1111", "bob@example.com");

        Console.WriteLine("Are the two users with the same ID and email equal?");

        Console.WriteLine(user1 == user3);

        var users = new Dictionary<User, string>();

        users.Add(user1, "bobby2010");

        users.Add(user2, "jane2023");

        Console.WriteLine(users[user1]);

        Console.WriteLine(users[user3]);

    }

}