using static IO;

using System;

​

public static class IO

{

   public static Action<Object> err = msg => Console.Error.WriteLine(msg);

}

​

​

public class Test: IDisposable

{

    public string Name { get; set; }

    public int[] arr = new int[100000];

    public Test(string n) { Name = n;  err("ctor " + Name);  }

    ~Test()

    {

        err("dtor " + Name);

    }

    public void Dispose() { err("dispose "+ Name); }

}

​

public class Program

{

​

    static void T()

    {

        Test x1 = new Test("T1");

        Test x2 = new Test("T2");

        Test x3 = new Test("T3");

        Test x4 = new Test("T4");

        Test x5 = new Test("T5");

        Test x6 = new Test("T6");

    }

    public static void Main(string[] args)

    {

​

        err(GC.GetTotalAllocatedBytes(true));

        T();

        err("After T(), before gc(): " + GC.GetTotalAllocatedBytes(true));

        GC.Collect(2, GCCollectionMode.Forced, true, true);

        GC.WaitForPendingFinalizers();

        err("After T(), after gc(): " + GC.GetTotalAllocatedBytes(true));

        {

            Test? x1 = new Test("main1");

            Test x2 = new Test("main2");

            Test x3 = new Test("main3");

            Test x4 = new Test("main4");

            Test x5 = new Test("main5");

            Test x6 = new Test("main6");

            x1 = null;

        }

        //T();

        err("After main alloc(), before gc(): " + GC.GetTotalAllocatedBytes(true));

        GC.Collect(2, GCCollectionMode.Forced, true, true);

        GC.WaitForPendingFinalizers();

        err("After main alloc, after  gc(): " + GC.GetTotalAllocatedBytes(true));

        Console.WriteLine("FINISHED");

    }

}