using System;

class var
{
	public static implicit operator int (var x) { return 0; }
	public static implicit operator var (int x) { return null; }
	public static var operator ++ (var x) { return x; }
}

public class Test
{
	public static void Main()
	{
		int i = 0;
		
		for (var x=0; x<3; ++x)
		{
			Console.WriteLine(x);
			if (++i > 15) break;
		}
	}
}