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bzoj4940 [Ynoi2016]这是我自己的发明 莫队+dfs序 - hankeke303
Web此文章正在审核中,即将跳转到首页 - 代码先锋网 WebOct 16, 2024 · Portal --> bzoj4940. Solution (原题这题面到底是。。怎么回事啊深深的套路qwq) 感觉自己对根号的算法还是很。。没有感觉啊== 实际上这题和bzoj5016没有任何区别的感觉。 chevrolet of smithtown saint james
[Ynoi2016] This is my own invention - Programmer Sought
WebSep 9, 2024 · bzoj4940 树刨+莫队(好题) 题意:一颗树n个点有点权,m次操作。操作两种:换根查询 x点的子树选每一个点,y点的子树选每一个点,如果两点点权相同ans++,输出ansn1e5,m5e5换根是幌子,先按照1来树刨,这个跟bzoj3083结论一样,就是分三种情况:当前根节点与被查询 ... WebPortal --> bzoj4940 Solution (Original title this problem surfaces in the end is how ah .. deep routine qwq) Feel algorithm is still very root. . I did not feel ah == In fact, this question and bzo... Weblink: Source: Niuke.com. Title description codeJan opened his brain one day and thought of an interesting question. For a tree with a fixed root of node 1, the beauty of a subtree is … chevrolet of south anchorage service center