using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

    }

}

interface IStudentTeacher

{

    string FirstName { get; set; }

    string LastName { get; set; }

    DateTime Birthday { get; set; }

    StructAddress Address { get; set; }

}

public struct StructAddress

{

    public string Address { get; set; }

    public string Address2 { get; set; }

    public string City { get; set; }

    public string State { get; set; }

    public string ZipCode { get; set; }

    public string Country { get; set; }

}

class Student : IStudentTeacher

{

    public string FirstName { get; set; }

    public string LastName { get; set; }

    public DateTime Birthday { get; set; }

    public StructAddress Address { get; set; }

    public StructAddress Address2 { get; set; }

    public StructAddress City { get; set; }

    public StructAddress State { get; set; }

    public StructAddress ZipCode { get; set; }

    public StructAddress Country { get; set; }

    public Student(string fname, string lname, DateTime bday, string address, string address2, string city, string st, string zip, string country)

    {

    }

}