2015年7月22日
(中等) HDU 5293 Tree chain problem，树链剖分+树形DP。
摘要： Problem DescriptionCoco has a tree, whose vertices are conveniently labeled by 1,2,…,n.There are m chain on the tree, Each chain has a certain weight.... 阅读全文
posted @ 2015-07-22 19:33 WhyWhy。 阅读(403) 评论(0) 推荐(0)