Flying lanterns 2011

[align=left]On the first day of college, the dean addressed the students, pointing out some of the rules:[/align][align=left]　　“The female dormitory will be out-of-bounds for all male students, and the male dormitory to the female students.[/align][align=left]Anybody hollow brick making machine caught breaking this rule will be fined $20 the first time. Anybody caught breaking this rule the second time will be fined $60. Being caught a third time will cost you $180. Are there any questions?”vacuum extruder　　One student raised his hand and asked, “How much for a season pass?”[/align]