树上启发式合并
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thusloop
这个作者很懒，什么都没留下…
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树上数颜色（板子）
//#pragma GCC optimize(2) //#pragma GCC optimize(3,"Ofast","inline") #include<bits/stdc++.h> #define int long long #define fi first #define se second #define pb push_back #define pii pair<int,int> #define IOS ios::sync_with_stdio(false);cin.tie原创 2021-10-24 15:35:41 · 185 阅读 · 0 评论 -
D. Tree and Queries
Tree and Queries 题意：树上每个节点一个颜色，m个询问，求v节点的子树中颜色出现次数大于等于k的颜色个数 //#pragma GCC optimize(2) //#pragma GCC optimize(3,"Ofast","inline") #include<bits/stdc++.h> #define int long long #define fi first #define se second #define pb push_back #define pii pair&l原创 2021-10-06 14:03:03 · 185 阅读 · 0 评论