题目传送门:http://acm.hdu.edu.cn/showproblem.php?pid=1754 I Hate It Time Limit: 9000/3000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 102825    Accepted Submission(s): 38669 Problem Description 很多学校流行一种比较的习惯.老师们很喜欢询问,…

这个也是线段树的经验问题,待修改的,动态询问区间的最大值,只需要每次更新的时候,去把利用子节点的信息进行修改即可以. 注意更新的时候区间的选择,需要对区间进行二分. #include<iostream> #include<stdio.h> #include<string.h> #include<algorithm> using namespace std; ; int b[maxx]; struct node{ int l; int r; int mid;…

这就是很简单的基本的线段树的基本操作,区间修改,区间查询,对区间内部信息打上laze标记,然后维护即可. 我自己做的时候太傻逼了...把区间修改写错了,对给定区间进行修改的时候,mid取的是节点的左右的中间值,而不是更新区间的中间值(太菜了). #include<iostream> #include<stdio.h> #include<string.h> #include<algorithm> using namespace std; ; struct no…

Billboard Time Limit: 20000/8000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 15719    Accepted Submission(s): 6629 Problem Description At the entrance to the university, there is a huge rectangular billboard of…

题目链接 HDU 1698 Problem Description: In the game of DotA, Pudge’s meat hook is actually the most horrible thing for most of the heroes. The hook is made up of several consecutive metallic sticks which are of the same length. Now Pudge wants to do some…

题意  给出一段初始化全为1的区间  后面可以一段一段更改成 1 或 2 或3 问最后整段区间的和是多少 思路:标准线段树区间和模版题 #include<cstdio> #include<algorithm> #include<set> #include<vector> #include<cstring> #include<iostream> using namespace std; ; struct Node{ int l,r,su…

In the game of DotA, Pudge's meat hook is actually the most horrible thing for most of the heroes. The hook is made up of several consecutive metallic sticks which are of the same length. (图片走丢了,真不好意思,要不我补一张?) (对就是这张图)Now Pudge wants to do some opera…

题目连接 题意: 一条长为N的铜链子,每个结点的价值为1.有两种修改,l,r,z; z=2:表示把[l,r]区间内链子改为银质,价值为2. z=3:表示把[l,r]区间内链子改为金质,价值为3. 思路: 线段树,区间重设,求和. #include<cstdio> #include<cstring> using namespace std; const int maxn=100000+10; struct node { int l; int r; int v;//标记该区间内的链条的…

To the moon Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 8372    Accepted Submission(s): 1986 Problem Description BackgroundTo The Moon is a independent game released in November 2011, it is…

敌兵布阵 Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 59891    Accepted Submission(s): 25331 Problem Description C国的死对头A国这段时间正在进行军事演习,所以C国间谍头子Derek和他手下Tidy又开始忙乎了.A国在海岸线沿直线布置了N个工兵营 地,Derek和Tidy的任务…