WebApr 8, 2024 · 虚树是指在原树上选择若干点组成的树，它在原树的基础上做了一些简化，但是保留必要的信息，从而使得计算更加高效。有m次询问，每次询问给出k个询问点，问使得这。， 那么一定满足条件，直接进栈，$ stk[++top] = p$虚树主要用于树形DP中，能够减少顶点数，降低时间复杂度。 Web题目链接 ___ #include #include #include using namespace std; const int N2e510; int n,m,hd[N],tot,dep[N],fa[N][20],ord[N],cnt,q; struct ...
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WebGet this Hood County News page for free from Thursday, October 29, 1981 ,r T T.TiJV-lwr HOOD COUNTY NEWS, GRANBURY, TEXAS, THURSDAY, OCTQSE3 29, 1981 . - - i Menu Grtnbury School Menu: ' Not. M ... Web【题解】[牛客网NOIP赛前集训营-提高组（第一场）]C.保护 LCA+线段树动态开点+线段树合并. 题目链接 ___ #include #include #include using namespace std; const int N2e510; int n,m,hd[N],tot,dep[N],fa[N][20],ord[N],cnt,q; struct Edge{int v,nx; }e[N<<1]; struct SegmentTree{int l,r,cnt; }c[N*1… brp waiting time
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