using System;

public class MySingletonedObject 
{
	private static object me = new object();
	private int customData;
	private static MySingletonedObject sinobj;
	public static MySingletonedObject GetSingleton(int data)
	{
		lock (me)
		{
			if (sinobj == null)
			{
				sinobj = new MySingletonedObject(data);
			}
		}
		return sinobj;
	}

	public MySingletonedObject(int newData)
	{
		customData = newData;
	}
	
	public void Print()
	{
		Console.WriteLine(customData.ToString());
	}
}

public class Test
{
	public static void Main()
	{
		MySingletonedObject.GetSingleton(1).Print();
		MySingletonedObject.GetSingleton(6).Print();
	}
}