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Re:But further observation reveals that only those indices in the set I = { l, k } ∪ { i : l < i < k ∧ opti > max i < j ≤ k { aj } } are worth considering.

Posted by frkstyc at 2007-12-29 15:26:53 on Problem 3017
In Reply To:Re:But further observation reveals that only those indices in the set I = { l, k } ∪ { i : l < i < k ∧ opti > max i < j ≤ k { aj } } are worth considering. Posted by:Thank_you at 2007-12-29 15:12:17

这个报告是写得很乱我承认，不过我觉得你完全是没有自己思考过就只跟着报告的思路走，这样是不行的
报告想表达的基本意思就是不是所有opt_i都是有用的，有些以为a_i的原因没用了，而且一旦它被标成没用
了，就永远没用了，不用再被考虑。报告给出了一个形式，你总可以自己推导一下吧。

> 我的意思是按照解题报告上的说法，好像是没有可以取的值。
> 不知道是我理解错了还是解题报告的描述有问题。
>

Followed by:

Re:But further observation reveals that only those indices in the set I = { l, k } ∪ { i : l < i < k ∧ opti > max i < j ≤ k { aj } } are worth considering. (171) Thank_you 2007-12-29 20:33:47

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