(还有,输入大数据一定不要用不加优化的cin/cout啊) 1#include<iostream>2#include<cstdio>3#defineMAXN 10000014#definell long long5usingnamespacestd;6unsigned ll n,m,a[MAXN],ans[MAXN<<2],tag[MAXN<<2];7inline ll ls(ll x)8{9returnx<<1;10}11inline ll rs(ll x)12{13returnx<<1|1...
AI代码解释 privatevoidbuildSegmentTree(int treeIndex,int l,int r){if(l>=r){tree[treeIndex]=data[l];return;}else{int leftTreeIndex=leftChild(treeIndex);int rightTreeIndex=rightChild(treeIndex);int mid=l+(r-l)/2;buildSegmentTree(leftTreeIndex,l,mid);buildSegmentTree(rightTreeIndex,mid+...
线段树之所以称为“树”,是因为其具有树的结构特性。线段树由于本身是专门用来处理区间问题的(包括RMQ、RSQ问题等。 图片来源于互联网。 对于每一个子节点而言,都表示整个序列中的一段子区间;对于每个叶子节点而言,都表示序列中的单个元素信息;子节点不断向自己的父亲节点传递信息,而父节点存储的信息则是他的每一个...
This blog post is motivated by an interesting problem I solved today:Timus 1846. I knew about segment trees previously for solving range-minimum query, but was not fully aware of the obvious generalizations of this nice data structure. Here I will describe the basics of a segment tree and so...
Segment Tree is a powerful data structure in programming, that is why it can still be optimized way more. In this blog I will explain one optimization that can make a basic segment tree slightly faster and easier to write. (idea and the code by me) This does not work on range update ...
Tree Data Structure DSA - Tree Data Structure DSA - Tree Traversal DSA - Binary Search Tree DSA - AVL Tree DSA - Red Black Trees DSA - B Trees DSA - B+ Trees DSA - Splay Trees DSA - Range Queries DSA - Segment Trees DSA - Fenwick Tree DSA - Fusion Tree DSA - Hashed Array Tree...
Data Structures - Segment Tree 学习了下一种新的数据结构,segment tree 主要看这篇文章: http://www.geeksforgeeks.org/segment-tree-set-1-sum-of-given-range/ 看完之后就基本清楚了。 说说他的应用场景。 假设给你一个array,有两个函数, 一个是, int sum(int i, int j) 给出 index i-j 的...
structure is composed of two fields:StorePtr, a pointer to the data buffer andSize, the size of the data. The code verifies that the whole buffer is located within the user-land range [1] and copies it over into a local kernelOverwriteStructstructure [2]. Just after copying the ...
保存的值 */ public int value; /** * 节点的子节点映射 */ public TreeMap<Character, Node> next; public Node(int value) { this.value = value; next = new TreeMap<>(); } public Node() { this(0); } } /** * 根节点 */ private Node root; /** Initialize your data structure ...
For multicast traffic, A is the root of the SR multicast tree, and D and E are leaf routers of the tree. B and C are the other multicast routers. The objective is to send the IP multicast traffic arriving at A to D and E, as ...