Light Bulbs Time Limit: 2 Seconds      Memory Limit: 65536 KB Wildleopard had fallen in love with his girlfriend for 20 years. He wanted to end the long match for their love and get married this year. He bought a new house for his family and hired a…

MS    Memory Limit:65536KB    64bit IO Format:%lld & %llu SubmitStatusid=14946">Practiceid=14946">ZOJ 2976 Description Wildleopard had fallen in love with his girlfriend for 20 years. He wanted to end the long match for their love and…

题目链接:Light bulbs 比赛链接:The Preliminary Contest for ICPC Asia Shanghai 2019 题意 给定 \(N\) 个灯泡 (编号从 \(0\) 到 \(N - 1\)),初始都是关闭的. 给定 \(M\) 个操作,每个操作包含 \(L\) 和 \(R\),对 \([L, R]\) 内的所有灯泡改变状态. 求最后有几个灯泡是亮的. 思路 题目挺简单的,翻转奇数次的灯泡是亮的,所以要求每个灯泡翻转的次数. 容易想到可以用差分. 对所有操作的两…

There are NN light bulbs indexed from 00 to N-1N−1. Initially, all of them are off. A FLIP operation switches the state of a contiguous subset of bulbs. FLIP(L, R)FLIP(L,R)means to flip all bulbs xx such that L \leq x \leq RL≤x≤R. So for example, FLI…

B. Light bulbs There are NNN light bulbs indexed from 000 to N−1N-1N−1. Initially, all of them are off. A FLIP operation switches the state of a contiguous subset of bulbs. FLIP(L,R)FLIP(L, R)FLIP(L,R) means to flip all bulbs xxx such that L≤x≤RL \le…

题目:https://nanti.jisuanke.com/t/41399 思路:差分数组 区间内操作次数为奇数次则灯为打开状态 #include<bits/stdc++.h> using namespace std; map<int,int>mp; int main() { int T; scanf("%d",&T); int n,m; int l,r; ;i<=T;i++) { mp.clear(); scanf("%d%d"…

复杂度分析,询问一千次,区间长1e6,O(1e9)超时. 那么我们知道对于差分来说,没必要一个一个求,只需要知道区间长就可以了,所以我们定义结构体差分节点,一个头结点,一个尾节点. 这样tail.loc-head.loc就是整个区间长,该区间的实际的大小就是 Add标记的大小,Add标记就是从头加到尾. 排序2*m个差分节点,对于loc相同的节点,说明是同一个位置的差分,add合并就可以了,不需要进行统计,直接跳过本次循环. #include <bits/stdc++.h> using nam…

https://nanti.jisuanke.com/t/41399 题目大意: 有n个灯,m次操作,每次修改[l,r]内的灯,(off - on ,on - off),问最后有几盏灯亮着. 换种说法:n个点m个区间,每次区间内的数+1,最后n个点中计数为奇数的点的个数就是答案. 刚开始没注意,直接用线段树写,超内存了.... 这题因为外层有个T,并且n太大,还要卡内存,太过分了. 卡数据卡内存,每组样例一重循环都会超时.所以可以分块和对m处理来做. 对m处理的话,仔细想一想,只有区间次数被操作…

Exploring Mesh APIs using light switch example The light switch example is meant to showcase the APIs for the provisioner and provisionee roles and how a simple Bluetooth Mesh network may be set up and configured. The network consists of one static p…

  Light Types 灯光类型 We have now covered some of the project settings which need to be considered before beginning work on lighting your scenes in Unity. Hopefully at this point you should have your project configured appropriately for your target plat…