摘要：
1639: [Usaco2007 Mar]Monthly Expense 月度开支 Description Farmer John是一个令人惊讶的会计学天才，他已经明白了他可能会花光他的钱，这些钱本来是要维持农场每个月的正常运转的。他已经计算了他以后N(1<=N<=100,000)个工作日中每一天的 阅读全文
摘要：
1620: [Usaco2008 Nov]Time Management 时间管理 Description Ever the maturing businessman, Farmer John realizes that he must manage his time effectively. He 阅读全文