比赛的时候因为卡内存,在抠内存的时候改错了,导致赛内没有AC,赛后发现数组开的很小都可以AC. 分析题意我们发现,这题需要求出所有存在的直线形成的上凸壳,那么查询$[L,R]$时在凸壳上二分导数,找到最大值即可. 因为有删除操作,故离线求出每条直线存在的时间区间,在时间线段树上打标记,那么这样会转化成$O(n\log n)$次插入. 那么现在需要维护一个数据结构,支持插入直线,询问单点最值,这显然可以使用李超线段树. 沿着时间线段树进行dfs,用一个栈按时间记录所有修改,那么可以很方便地实现李超…

Text Postcards always spoil my holidays. Last summer, I went to Italy. I visited museums and sat in public gardens. A friendly waiter taught me a few words of Italian. Then he lent me a book. I read a few lines, but I did not understand a word. Every…

1.CardIO 识别 框架 GitHub 下载地址 配置 1.把框架整个拉进自己的工程,然后在 TARGETS => Build Phases => Link Binary With Libraries 里边分别加入下面这几个框架. Accelerate.framework MobileCoreServices.framework CoreMedia.framework AudioToolbox.framework AVFoundation.framework 2.在TARGETS =>…

容斥原理+状压 Card Collector Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1940    Accepted Submission(s): 907Special Judge Problem Description In your childhood, do you crazy for collecting the bea…

Install application pavucontrol Run pavucontrol You will see the configuration about sound card and mic card. If can not solve it, Kmix shoud be used and combine it with pavucontrol…

补充新闻:程序员黑餐馆系统 给自己饭卡里充钱 ,技术是双刃剑,小心,小心! 前言 从M1卡的验证漏洞被发现到现今,破解设备层出不穷,所以快速傻瓜式一键破解不是本文的重点,年轻司机将从本文中获得如下技能. 如果你想简单快速的上手,你可以选择ACR122-like,Proxmark3等容易购买到的操作简单的设备,或者有个带有NFC功能并安装有安卓Mifare Classic Tool (MCT)软件的手机也是个不错的选择. 本文基于树莓派加RC522,PN532模块试验,如果你是刚入门的Geek爱好…

Card Time Limit: 10000/5000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 218    Accepted Submission(s): 86Special Judge Problem Description There are x cards on the desk, they are numbered from 1 to x. The score o…

[OpenJudge 3061]Flip The Card 试题描述 There are N× Ncards, which form an N× Nmatrix. The cards can be placed upwards or downwards. Now Acer is going to do some operations so that all the cards are placed upwards after the operations. In each operation,…

How and Where to Use the ORCA Card The Microsoft ORCA card provides unlimited rides on all buses, trains, and water taxis operated by participating transit agencies. The ORCA card uses contact-free technology similar to a building access card, so you…

Boot your Orange PI board from EMMC without SD Card inserted login insert your SD Card Run: sudo install_to_sdcard [btrfs] Copy the Code Your emmc Linux installation will be transfered to SD Card You can boot from that SD Card on another or the same…