static void Main(string[] args)
{
Director1 director1 = new Director1();
Director2 director2 = new Director2();
Builder1 b1 = new Builder1();
Builder1 b2 = new Builder1();
director1.Construct(b1);
director2.Construct(b2);
Product p1 = b1.GetProduct();
Product p2 = b2.GetProduct();
Console.WriteLine(p1.Run());
Console.WriteLine(p2.Run());
}