interface Openable
{
    void Open();
}

class Script implements Openable // 纸条
{
    public void Open()
    {
        System.out.println("挠挠\n");
    }
}

public class Package implements Openable // 纸包
{
    private Openable content;

    public Package(Script s)
    {
        content = s;
    }

    public Package(Package p)
    {
        content = p;
    }

    public void Open()
    {
        System.out.print("打开一层纸包\n");
        content.Open();
    }
}

public class Secret implements Openable // 祖传秘方
{
    private Openable secret;
    public Secret()
    {
        secret = new Package(new Package(new Package(new Package(new Package(new Package(new Package(new Package(new Package(new Package(new Script()))))))))));
    }

    public void Open()
    {
        secret.Open();
    }
}