COGS 775 山海经 思路: 求最大连续子段和(不能不选),只查询,无修改.要求输出该子段的起止位置. 线段树经典模型,每个节点记录权值和sum.左起最大前缀和lmax.右起最大后缀和rmax.最大子段和dat即可. 要求输出起止位置,单独维护左右端点.注意权值相同要求l.r尽量小,所以相同时选左儿子不选右儿子,维护时考虑是否加等号. Code: #include <bits/stdc++.h> using namespace std; typedef long long ll; cons…

题目链接:      TP 题解:   我数据结构真心是弱啊= =. 线段树好厉害啊,一直不会区间最大连续和,今天刚学习了一下233. 维护前缀最大和后缀最大,越界最大(?),再维护一个区间最大,瞎搞搞就好了,RE了一遍233. 代码:  #define Troy #include <bits/stdc++.h> using namespace std; inline int read(){ ,k=;char ch=getchar(); :,ch=getchar(); &ch<=…

Revenge of Segment Tree Problem Description In computer science, a segment tree is a tree data structure for storing intervals, or segments. It allows querying which of the stored segments contain a given point. It is, in principle, a static structur…

The structure of Segment Tree is a binary tree which each node has two attributes startand end denote an segment / interval. start and end are both integers, they should be assigned in following rules: The root's start and end is given bybuild method…

The structure of Segment Tree is a binary tree which each node has two attributes start and end denote an segment / interval. start and end are both integers, they should be assigned in following rules: The root's start and end is given by build meth…

For a Maximum Segment Tree, which each node has an extra value max to store the maximum value in this node's interval. Implement a modify function with three parameterroot, index and value to change the node's value with[start, end] = [index, index] …

Segment Tree Query I For an integer array (index from 0 to n-1, where n is the size of this array), in the corresponding SegmentTree, each node stores an extra attribute max to denote the maximum number in the interval of the array (index from start…

Segment Tree Build I The structure of Segment Tree is a binary tree which each node has two attributes start and end denote an segment / interval. start and end are both integers, they should be assigned in following rules: The root's start and end i…

For an array, we can build a SegmentTree for it, each node stores an extra attribute count to denote the number of elements in the the array which value is between interval start and end. (The array may not fully filled by elements) Design a query me…

For a Maximum Segment Tree, which each node has an extra value max to store the maximum value in this node's interval. Implement a modify function with three parameter root, index and value to change the node's value with [start, end] = [index, index…