A Simple Tree Problem Time Limit: 3000ms Memory Limit: 65536KB This problem will be judged on ZJU. Original ID: 368664-bit integer IO format: %lld Java class name: Main Prev Submit Status Statistics Discuss Next Type: None None Graph Theory 2-…
模板原型: 解决零散数点在已知线段上的出现次数.思想是将线段用长线覆盖,将长线转化成线段树.用权值记录各个数点出现的次数,最后进行查询.代码解释见注释. #include <bits/stdc++.h> using namespace std; ; int n, m, l, r; //长度n,线段数m struct line { int left, right; //left:左边界 right:右边界 int n; //该节点的权值 } a[MAXN]; void buildt(int l,…
Description Given a rooted tree, each node has a boolean (0 or 1) labeled on it. Initially, all the labels are 0. We define this kind of operation: given a subtree, negate all its labels. And we want to query the numbers of 1's of a subtree. Input Mu…