using System;

using System.Collections.Generic;

using System.IO;

public class Program

{

    public static void Main()

    {

        using MemoryStream m = new(new byte[] {1});

        StreamReader r1 = new StreamReader(m);

        Console.WriteLine($"v1: {r1.ReadToEnd()}");

        using (StreamReader r2 = new StreamReader(m))

        {

            Console.WriteLine($"v2: {r2.ReadToEnd()}");

        }

        using (StreamReader r3 = new StreamReader(m))

        {

            Console.WriteLine($"v3: {r3.ReadToEnd()}");

        }

    }

}