4
11
2016
0

[bzoj]3272&3502&3638&3267: Cf172 k-Maximum Subsequence Sum

真是迟了好久,开始以为这个就不写辣,然而今天突然意识有一些模糊,印象有一点浅,就当复习一下

什么?四倍经验?传送门?太麻烦了不放

Category: bzoj | Tags: 线段树优化费用流

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