using System;

public class Program

{

    public static void Main()

    {

        var address1 = new Address("1234 main st", null, "detroit", StateCode.MI, "12345");

        var address2 = new Address("1234 main st", null, "detroit", StateCode.MI, "12345");

        var address3 = new Address("12345 main st", null, "detroit", StateCode.MI, "12345");

​

        Console.WriteLine(address1.Equals(address2));

        Console.WriteLine(address1.Equals(address3));

​

        Console.WriteLine(address1.GetHashCode() == address2.GetHashCode()); 

        Console.WriteLine(address1.GetHashCode() == address3.GetHashCode()); 

    }

}

​

public record Address(string line1, string? line2, string city, StateCode state, string zip)

{

}

​

public enum StateCode

{

    None,

    AK,

    AL,

    AR,

    AS,

    AZ,

    CA,

    CO,

    CT,

    DC,

    DE,

    FL,

    FM,

    GA,

    GU,

    HI,

    IA,

    ID,

    IL,

    IN,

    KS,

    KY,

    LA,

    MA,

    MD,

    ME,

    MH,

    MI,

    MN,

    MO,

    MP,

    MS,

    MT,

    NC,

    ND,

    NE,

    NH,

    NJ,

    NM,

    NV,

    NY,

    OH,

    OK,

    OR,

    PA,

    PR,

    PW,

    RI,

    SC,

    SD,

    TN,

    TX,

    US,

    UT,

    VA,

    VI,

    VT,

    WA,

    WI,

    WV,

    WY

}