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…

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的任务就是要监视这些工兵营地的活动情况.由于采取了某种先进的监测手段,所以每个工兵营地的人数C国都掌握的一清二楚,每个工兵营地的人数都有可能发生变动,可能增加或减少若干人手,但这些都逃不过C国的监视. 中央情报局要研究敌人究竟演习什么战术,所以Tidy要随时向Derek汇报某一段连续的工兵营地一共有多少人,例如Derek问:“Tidy,马上汇…

题意  :一段区间  操作1 切断点 操作2 恢复最近切断的一个点 操作3 单点查询该点所在最大连续区间 思路:  主要是push_up :  设区间x 为母区间  x<<1 ,x<<1|1分别为两个子区间 x的左端连续子段和 :当x<<1区间没有断开 也就是 x<<1 的最大连续子段ml ==tree[x<<1].r-tree[x<<1].l+1 等于区间长度时 x左端连续字段和tree[x].ll=tree[x<<1]…

题目链接:https://vjudge.net/problem/HDU-1540 uring 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…

Tunnel Warfare Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 7703    Accepted Submission(s): 2981 Problem Description During the War of Resistance Against Japan, tunnel warfare was carried out…

题目链接:1540 Tunnel Warfare 以为单组输入 这个题多组输入 结构体记录每个区间左边和右边的连续区间 ms记录最大 在查询操作时: 1.这个点即将查询到右区间 看这个点 x 是否存在于右区间的ls 如果存在说明有可能 左区间的rs 和右区间的 ls 是连续的 这时候我们要考虑查询两个区间并且 值想加 查询 左区间的时候同理 #include<bits/stdc++.h> using namespace std; #define maxn 500010 struct ac{ i…

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…

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…

Tunnel Warfare Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 2396    Accepted Submission(s): 886 Problem Description During the War of Resistance Against Japan, tunnel warfare was carried out…

http://acm.hdu.edu.cn/showproblem.php?pid=1540 Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Problem Description During the War of Resistance Against Japan, tunnel warfare was carried out extensively in the vast…

Painting some colored segments on a line, some previously painted segments may be covered by some the subsequent ones. Your task is counting the segments of different colors you can see at last. Input The first line of each data set contains exactly…

BZOJ 洛谷 ST表的一二维顺序一定要改过来. 改了就rank1了哈哈哈哈.自带小常数没办法. \(Description\) 给定长为\(n\)的序列\(A_i\).\(q\)次询问,每次给定\(l,r\),求\(\sum\limits_{i=l}^r\sum\limits_{j=i}^r\min\{A_i,A_{i+1},...,A_j\}\). \(n,q\leq10^5\). \(Solution\) 莫队: 这种区间询问问题考虑一下莫队. 考虑移动右端点\(r\to r+1\)的时候…

1809: Parenthesis Time Limit: 5 Sec     Memory Limit: 128 Mb     Submitted: 2291     Solved: 622 Description Bobo has a balanced parenthesis sequence P=p1 p2…pn of length n and q questions. The i-th question is whether P remains balanced after pai an…

Bobo has a balanced parenthesis sequence P=p 1 p 2…p n of length n and q questions. The i-th question is whether P remains balanced after p ai and p bi  swapped. Note that questions are individual so that they have no affect on others. Parenthesis se…

分析:不需要线段树,set可过,STL大法好 #include <iostream> #include <cstdio> #include <cstring> #include <algorithm> #include <set> #include <stack> using namespace std; ; set<int>s; bool d[N]; stack<int>p; ]; int main() {…

There is a company that has N employees(numbered from 1 to N),every employee in the company has a immediate boss (except for the leader of whole company).If you are the immediate boss of someone,that person is your subordinate, and all his subordinat…

A lot of battleships of evil are arranged in a line before the battle. Our commander decides to use our secret weapon to eliminate the battleships. Each of the battleships can be marked a value of endurance. For every attack of our secret weapon, it…

For the daily milking, Farmer John's N cows (1 ≤ N ≤ 50,000) always line up in the same order. One day Farmer John decides to organize a game of Ultimate Frisbee with some of the cows. To keep things simple, he will take a contiguous range of cows fr…

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 operations on the hook. Let us numb…

You have N integers, A1, A2, ... , AN. You need to deal with two kinds of operations. One type of operation is to add some given number to each number in a given interval. The other is to ask for the sum of numbers in a given interval. Input The firs…

很多学校流行一种比较的习惯.老师们很喜欢询问,从某某到某某当中,分数最高的是多少. 这让很多学生很反感. 不管你喜不喜欢,现在需要你做的是,就是按照老师的要求,写一个程序,模拟老师的询问.当然,老师有时候需要更新某位同学的成绩. Input本题目包含多组测试,请处理到文件结束. 在每个测试的第一行,有两个正整数 N 和 M ( 0<N<=200000,0<M<5000 ),分别代表学生的数目和操作的数目. 学生ID编号分别从1编到N. 第二行包含N个整数,代表这N个学生的初始成绩,…

点我看题目 题意 :N个村子连成一条线,相邻的村子都有直接的地道进行相连,不相连的都由地道间接相连,三个命令,D x,表示x村庄被摧毁,R  ,表示最后被摧毁的村庄已经重建了,Q x表示,与x直接或间接相连的村庄有多少个,当然包括他自己. 思路 :这是一道用线段树,树状数组,还有STL都可以做的题....因为用线段树的更新什么的太麻烦,.....所以我用了树状数组 #include <iostream> #include <stdio.h> #include <string.…

题目这么说的: 摩尔瓦多的移动电话公司摩基亚(Mokia)设计出了一种新的用户定位系统.和其他的定位系统一样,它能够迅速回答任何形如“用户C的位置在哪?”的问题,精确到毫米.但其真正高科技之处在于,它能够回答形如“给定区域内有多少名用户?”的问题. 在定位系统中,世界被认为是一个W×W的正方形区域,由1×1的方格组成.每个方格都有一个坐标(x,y),1<=x,y<=W.坐标的编号从1开始.对于一个4×4的正方形,就有1<=x<=4,1<=y<=4(如图): 请帮助Mok…

LINK 题意:给出n个[l,r],q个询问a,b,问被包含于[a,b]且这样的区间数大于k个的方案数有多少 思路:预处理所有的区间,对于一个区间我们标记其(左边界)++,(右边界+1)--这样就能通过前缀和维护小于某边界的区间个数了 这题也可以用线段树解,但显然不太合算 /** @Date : 2017-07-01 10:02:30 * @FileName: 816B 前缀和 线段树 二分.cpp * @Platform: Windows * @Author : Lweleth (SoungE…

        ID Origin Title 228 / 440 Problem A HDU 1166 敌兵布阵   207 / 438 Problem B HDU 1754 I Hate It   181 / 727 Problem C POJ 3468 A Simple Problem with Integers   105 / 410 Problem D POJ 2528 Mayor's posters   138 / 230 Problem E HDU 1698 Just a Hook…

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/A 单点修改,区间查询 方法一:线段树 http://www.cnblogs.com/kuangbin/archive/2011/08/15/2139834.html #include<iostream> #include<cstdio> #include<string> #include<cstring> #include<cmath> #include<a…

B - Tunnel WarfareHDU - 1540 这个有两种方法,一个是区间和并,这个我个人感觉异常恶心 第二种方法就是找最大最小值 kuangbin——线段树专题 H - Tunnel Warfare <-- 这个博客讲的很清楚 #include <cstdio>//法一:最大值最小值法,这个就是每一个点,如果这个点没有被摧毁,那就找到这个点最左边的和最右边的 #include <cstdlib>//最大-最小+1.这个就是这个最大连续长度. #include &l…

[POJ2892]Tunnel Warfare 试题描述 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, e…

Tunnel Warfare                                  Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Problem Description During the War of Resistance Against Japan, tunnel warfare was carried out extensively in the vast…