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Re:贡献了3次w,过了我的50!小纪念一下!+ 分析

Posted by yayu_myself at 2009-08-21 19:56:27 on Problem 2586 and last updated at 2009-08-21 19:56:47
In Reply To:贡献了3次w,过了我的50!小纪念一下! Posted by:zhuxg_123 at 2009-05-04 10:32:12
一样啊。。
分析如下:
对于一个给定的 s 和 d,我们只要让亏损的月份尽量少,而实际上存在固定的最优局面
分类讨论每种情况的最优局面, 一共有五种(O表示亏  。表示盈)
。。。。O亏,则 。。。。O。。O。。。。为最优局面
。。。OO亏,则 。。。OO。。OO。。。为最优局面
。。OOO亏,则 。。OOO。。OOO。。为最优局面
。OOOO亏,则 。OOOOO。OOOO。为最优局面
OOOOO亏, 必亏

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