模板题>.<当初学了一波又忘了 #include<map> #include<set> #include<cmath> #include<queue> #include<stack> #include<vector> #include<cstdio> #include<iomanip> #include<cstdlib> #include<cstring> #include&…

title: hdu-1540线段树刷题 date: 2018-10-18 19:55:21 tags: acm 刷题 categories: ACM-线段树 概述 哇,,,这道线段树的题可以说是到目前为止我所做过的最难的一道了吧QAQ,,,,,, 一开始读完题就是一脸懵逼,,,,完全不知道该从哪里下手,,,就是知道这是一道线段树的题也不知道该怎么下手啊啊啊,,,, 最后还是看了kaungbin大佬的代码,,,QAQ 光是读代码就花了一两个小时,,,(不过也有可能和今天贼困有关,,,脑袋不怎么转…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1540 题目: 题意:总共有n个村庄,有q次操作,每次操作分为摧毁一座村庄,修复一座村庄,和查询与询问的村庄相连接的城市数量. 思路:线段树+区间合并. 代码实现如下: #include <set> #include <map> #include <queue> #include <stack> #include <cmath> #include &l…

Tunnel Warfare Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 3412    Accepted Submission(s): 1323 Problem Description During the War of Resistance Against Japan, tunnel warfare was carried ou…

https://vjudge.net/contest/66989#problem/I #include<iostream> #include<cstdio> #include<cmath> #include<stack> #include<cstring> #include<algorithm> using namespace std; #define LL long long #define ls l,m,rt<<1 #…

---恢复内容开始--- Tunnel Warfare Time Limit:2000MS     Memory Limit:32768KB     64bit IO Format:%I64d & %I64u Description During the War of Resistance Against Japan, tunnel warfare was carried out extensively in the vast areas of north China Plain. Genera…

D. Water Tree time limit per test:4 seconds memory limit per test:256 megabytes input:standard input output:standard output Mad scientist Mike has constructed a rooted tree, which consists of n vertices. Each vertex is a reservoir which can be either…

emmmmmmmm我菜爆了 思路来自:https://blog.csdn.net/chudongfang2015/article/details/52133243 线段树最难的应该就是要维护什么东西 这道题刚开始1~n都是连通的 D x 即破坏x这个地方 Q x 即查询包含x的连续区间有多长 R 即修复最后一次D的x 博主给了一个非常好的思路 线段树维护两个值,该区间内被破坏的最大的点,以及最小的那个点 如 1,2,...,,6 破坏了 2 ,4,5 那么该区间里的pmax = 5,pmin =…

I guess there's not much point in reminding you that Nvodsk winters aren't exactly hot. That increased the popularity of the public transport dramatically. The route of bus 62 has exactly n stops (stop 1 goes first on its way and stop n goes last). T…

During the War of Resistance Against Japan, tunnel warfare was carried out extensively in the vast areas of north China Plain. Generally speaking, villages connected by tunnels lay in a line. Except the two at the ends, every village was directly con…