using System;

​

namespace UserNamespace{

public class Program

{

    public static void Main()

    {

    }

    public class User{

        private string user_id;

        protected string user_password;

        public User(string id, string pass){

            this.user_id = id;

            this.user_password = pass;

        }

        public void verifyLogin(string id, string pass){

            this.user_id = id;

            this.user_password = pass;

        }

​

    }

    public class Administrator : User{

        private string admin_name;

        private string admin_id;

        public Administrator(string name, string id, string pass) : base(id, pass){

            this.admin_name = name;

            this.admin_id = id;

            this.user_password = pass;

        }

        public void updatePassword(string newPassword){

        }

​

        public void updateAdminName(string name){

        }

    }

}

}