JuQueen Time Limit: 5 Sec  Memory Limit: 512 MB Description Input Output Sample Input 10 10 5 state 0 groupchange 2 9 7 state 9 groupchange 0 2 10 change 0 -5 Sample Output 0 7 7 3 -3 线段树lazy的巧用 #include <iostream> #include <cstdio> #include &…

E. DZY Loves Colors time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output DZY loves colors, and he enjoys painting. On a colorful day, DZY gets a colorful ribbon, which consists of n units (they…

POJ 2777 Count Color --线段树Lazy的重要性 原题 链接:http://poj.org/problem?id=2777 Count Color Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 59087 Accepted: 17651 Description Chosen Problem Solving and Program design as an optional course, you are…

A Simple Problem with Integers Time Limit: 5000MS   Memory Limit: 131072K Total Submissions: 92921   Accepted: 28910 Case Time Limit: 2000MS Description You have N integers, A1, A2, ... , AN. You need to deal with two kinds of operations. One type of…

http://poj.org/problem?id=2777 题目大意 涂颜色,输入长度,颜色总数,涂颜色次数,初始颜色都为1,然后当输入为C的时候将x到y涂为颜色z,输入为Q的时候输出x到y的颜色总数 很明显的区间线段树,然后加lazy思想记录 lazy操作为了避免查找到每一个子节点区间而费时,将查找到的区间作标记,但查找到这个区间或还要继续像下查找的时候 将此区间的数据传给下面两个区间树 因为这题颜色总类只有30种很少,所以偷了个懒,将判断与记录操作合并到一个结构体上了,然后用类似hash的…

题目 写了一天的线段树,这道题主要说明一下sum是赋值的,不是累加的,并且在push_down的时候lazy也是赋值的.因可能对懒标记的理解还不是很透彻吧. #include <iostream> #include <cstdio> #include <cstring> using namespace std; const int Max = 1e5+10; typedef long long ll; struct Tree{ int L,R; ll sum; int…

Problem Description Chinese always have the railway tickets problem because of its' huge amount of passangers and stations. Now goverment need you to develop a new tickets query system.One train can just take k passangers. And each passanger can just…

又是一开始觉得的水题,结果GG了好久的东西... 题意是给你n个英雄,每个英雄开始为1级经验为0,最多可以升到k级并且经验一直叠加,每一级都有一个经验值上限,达到就升级.接着给你两种操作:W li ri ei:从第li到第ri个增加经验基数ei,注意这儿ei还需要乘以级数才是真正增加的经验,还有就是先在此等级下增加此等级倍数的经验,然后再判断升级情况 Q li ri :在第li到第ri个查找经验最多的值 记录最大值嘛,不过因为级数控制增加的倍数,也就是说区间更新时,多次更新标记得到的只是基数ei…

You are given a tree with N nodes. The tree’s nodes are numbered 1 through N and its edges are numbered 1 through N − 1. Each edge is associated with a weight. Then you are to execute a series of instructions on the tree. The instructions can be one…

/* 本体在spoj375的基础上加了一些操作,用到线段树的lazy操作模板类型 */ #include<stdio.h> #include<string.h> #include<iostream> #include<map> #include<string.h> #include<stdlib.h> #include<math.h> using namespace std; #define N 11000 #define…