摘要: \(\large \max(S) = \sum_{T\in S} -1^{|T|-k} \times \binom{k-1}{|T|-1}\min(T)\) \(\large E(\max(S)) = \sum_{T\in S} -1^{|T| -k}\times \binom{k-1}{|T|-1 阅读全文
posted @ 2020-07-24 14:30 _Isaunoya 阅读(165) 评论(2) 推荐(0) 编辑