using System;

using System.Collections.Concurrent;

using System.IO;

using System.Runtime.Serialization.Formatters.Binary;

public class Program

{

    public static void Main()

    {

        var memoryBefore = GC.GetTotalMemory(false);

        var testDictionary = new ConcurrentDictionary<int,ConcurrentDictionary<ushort,bool>>();

        for (var i = 0; i < 54; ++i)

        {

            var testNestedDictionary = new ConcurrentDictionary<ushort, bool>();

            testNestedDictionary.TryAdd(1, true);

            testDictionary.TryAdd(i, testNestedDictionary);

        }

        var memoryAfter = GC.GetTotalMemory(false);

        Console.WriteLine("size of testDictionary is roughly " + (memoryAfter - memoryBefore));

    }

}