Description 给定一个n个点的严格凸多边形(各个内角<180°),现在要切出两个非退化三角形(三点不共线),要求两个三角形顶点必须是凸多边形的顶点,且三角形不可相交(但是点或边可以重合).求两个三角形面积之差的最大值. Input 第一行,一个整数N. 第二到N+1行,每行两个整数xi,yi,表示多边形的一个点,保证顶点按顺时针或逆时针顺序给出. Output 输出答案,精确到小数点后1位. 最小三角形一定是相邻三点构成,因此只需枚举每个最小三角形,查询剩余部分中的最大三角形 dp,f…

Search GO 说明:输入题号直接进入相应题目,如需搜索含数字的题目,请在关键词前加单引号 Problem ID Title Source AC Submit Y 1000 A+B Problem 10983 18765 Y 1036 [ZJOI2008]树的统计Count 5293 13132 Y 1588 [HNOI2002]营业额统计 5056 13607 1001 [BeiJing2006]狼抓兔子 4526 18386 Y 2002 [Hnoi2010]Bounce 弹飞绵羊 43…

2632: [neerc2011]Gcd guessing game Time Limit: 10 Sec  Memory Limit: 128 MBSubmit: 144  Solved: 84[Submit][Status][Discuss] Description          给定一个数n ,有一个数x , ( 1<=x<=n ) 每次你可以猜在[1,n]中的数,假设是y,如果x==y,游戏结束,如果没猜中,则告诉你gcd(x,y),然后继续猜,直到猜中为止.          现…

2015-2016 ACM-ICPC, NEERC, Northern Subregional Contest D Problem D. Distribution in Metagonia Input file: distribution.in Output file: distribution.out Time limit: 2 seconds Memory limit: 256 megabytes There are one hundred noble families in the cou…

水概率....SGU里难得的水题.... 495. Kids and Prizes Time limit per test: 0.5 second(s)Memory limit: 262144 kilobytes input: standardoutput: standard ICPC (International Cardboard Producing Company) is in the business of producing cardboard boxes. Recently the…

495. Kids and Prizes Time limit per test: 0.25 second(s)Memory limit: 262144 kilobytes input: standardoutput: standard ICPC (International Cardboard Producing Company) is in the business of producing cardboard boxes. Recently the company organized a…

题目链接 495. Kids and Prizes Time limit per test: 0.25 second(s)Memory limit: 262144 kilobytes input: standardoutput: standard ICPC (International Cardboard Producing Company) is in the business of producing cardboard boxes. Recently the company organiz…

http://acm.sgu.ru/problem.php?contest=0&problem=495 学习:当一条路走不通,换一种对象考虑,还有考虑对立面. 495. Kids and Prizes Time limit per test: 0.25 second(s)Memory limit: 262144 kilobytes input: standardoutput: standard ICPC (International Cardboard Producing Company) is…

northern truck 是什么牌子?具体_百度知道 northern truck 是什么牌子?具体…

题意: N个礼品箱, 每个礼品箱内的礼品只有第一个抽到的人能拿到. M个小孩每个人依次随机抽取一个,  求送出礼品数量的期望值. 1 ≤ N, M ≤ 100, 000 挺水的说..设f(x)表示前x个人都选择完成后礼品剩下数的期望值( f(0) = N ), 那么f(x) = f(x - 1) - f(x - 1) / N = f(x - 1) * (N - 1) / N (显然). 那么答案就是等于 N - N * [(N - 1) / N]^M. 后面部分可以用快速幂优化.时间复杂度O(l…

[Bible for kids] 儿童圣经App 除了<The Bible>这个由YouVersion团队开发的全球下载量和安装数目第一的圣经类.安装量已逾1亿8千万的App之外,YouVersion团队不久前还发布了面向孩子的圣经App,安装数目已达1千万左右: <The Bible for kids>儿童圣经App 完全免费. 既然是面向儿童,内容自然不能太难懂.以插图,动画,互动等形式来帮助孩子了解圣经,听闻福音,认识耶稣. 目前一共有34个部分,每个部分是圣经的一部分故事,…

题目链接:hdu 5997 rausen loves cakes 题意: 给你n个点,每个点有一个颜色,现在有两个操作,第一个操作,将颜色x改为颜色y,第二个操作,询问[x,y]区间有多少颜色段(颜色段的定义为从左往右相同的颜色为一段,遇到不相同的为下一段,ie:144112为4段颜色) 题解: 对于第二个操作我们可以写一个线段树合并来搞定,对于第一个操作,就要用启发式修改来进行,如何启发式? 我们开一个数组来记录每个颜色对应的颜色,最开始都是对应自己,然后开一个vector来记录每个颜色的位置…

一.child.kid.toddler 参考:https://www.zybang.com/question/a9150bb1239cf1d667135e9bd8518f75.html child:美 [tʃaɪld] n.小孩,孩子;幼稚的人;产物;弟子 kid:美 [kɪd] n.<口>小孩;小山羊,小山羊皮制品 vt.& vi.欺骗,戏弄,取笑 adj.较年幼的;小山羊皮制的 toddler:美 [ˈtɑ:dlə(r)] n.蹒跚行走的人;幼童装;学步的幼儿 二.kids/chi…

题目描述 N个点m条边,每个点有一个点权a.对于任意一个三元环(j,j,k)(i<j<k),它的贡献为max(ai,aj,ak) 求所有三元环的贡献和.N<100000,,m<250000. 输入 The first line of the standard input contains two integers  n and m (1<=N<=100000,1<=M<=250000) separated by a single space and deno…

JavaScript for Kids: A Playful Introduction to Programming 作者: Nick Morgan  出版社: No Starch Press 副标题: A Playful Introduction to Programming 出版年: 2014-12-12 页数: 336 定价: USD 34.95 装帧: Paperback ISBN: 9781593274085 内容简介 · · · · · · JavaScript for Kids是对…

{KIDS采购销售管理系统} 软件项目总结报告 编号:-{kpss}-CLOSUREREPORT 版本:1.0 变更记录 1 项目信息 2 项目说明 [本项目主要用于母婴店人事管理,采购管理,商品管理为一体的后台管理系统] 3 项目周期 1)项目进度总结: 项目共一个项目组(6人)总共耗时180天 本人主要负责产品模块和业务采购流程模块 3)改进措施: [项目为初级版本,后序迭代完善更多业务功能] 软件项目阶段性总结报告 采购销售管理系统阶段性总结报告 宝贝王有限公司 1. 引言 a) 编写目的…

https://www.ted.com/talks/linda_liukas_a_delightful_way_to_teach_kids_about_computers/transcript00:12Code is the next universal language. In the seventies, it was punk music that drove the whole generation. In the eighties, it was probably money. But…

B. Two Cakes time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Sasha and Dima want to buy two nn -tier cakes. Each cake should consist of nn different tiers: from the size of 11 to the size o…

Description \(n\) 个点 \(m\) 条边,每个点有一个点权 \(a_i\). 对于任意一个三元环 \((i,j,k)(i<j<k)\),它的贡献为 \(\max(a_i,a_j,a_k)\),求所有三元环的贡献和. Input The first line of the standard input contains two integers n and m (1<=N<=100000,1<=M<=250000) separated by a sing…

Alice Goffman In the United States, two institutions guide teenagers on the journey to adulthood: college and prison. Sociologist Alice Goffman spent six years in a troubled Philadelphia neighborhood and saw first-hand how teenagers of African-Americ…

34.More-healthyful Menu Options for Kids 给孩子提供的更健康菜式选择 ① French fries,washed down with a pint of soda,are a favourite part of fast-food lunches and dinners for millions of American youngsters.But taking a cue from health experts,a group of 19 restaur…

B. Two Cakestime limit per test 1 secondmemory limit per test 256 megabytesinput standard inputoutput standard outputIt's New Year's Eve soon, so Ivan decided it's high time he started setting the table. Ivan has bought two cakes and cut them into pi…

Going to bed at the same time every night could give your child's brain a boost, a recent study found. Researchers at University College London found that when 3-year-olds have a regular bedtime they perform better on cognitive tests administered at…

A. Carrot Cakes time limit per test   1 second memory limit per test   256 megabytes   In some game by Playrix it takes t minutes for an oven to bake k carrot cakes, all cakes are ready at the same moment t minutes after they started baking. Arkady n…

Kids in a Friendly Class 题目连接: http://codeforces.com/gym/100269/attachments Description Kevin resembles his class in primary school. There were girls and boys in his class. Some of them were friends, some were not. But if one person considered anothe…

It's New Year's Eve soon, so Ivan decided it's high time he started setting the table. Ivan has bought two cakes and cut them into pieces: the first cake has been cut into a pieces, and the second one — into b pieces. Ivan knows that there will be n…

B. Two Cakes time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output It's New Year's Eve soon, so Ivan decided it's high time he started setting the table. Ivan has bought two cakes and cut them in…

题目链接  rausen loves cakes 题意  给出一个序列和若干次修改和查询.修改为把序列中所有颜色为$x$的修改为$y$, 查询为询问当前$[x, y]$对应的区间中有多少连续颜色段.   序列长度为$n$,总操作数为$q$,满足$1 <= n <= 10^{5}, 1 <= q <= 10^{5}$ 初始化的时候若当前颜色和前一个位置的颜色不相等的时候则在这个位置的树状数组中打标记. 修改的时候,颜色权值数小的往大的合并,这样满足总合并复杂度为$O(nlogn)$,…

KIDS STORE - OPENCART 自适应主题模板 ABC-0022 FEATURES Get FREE Lifetime Updates Get FREE On-Going Support HTML5 and CSS3 Fully RESPONSIVE Theme Using Google Fonts Support Multiple Language Included RTL Language Support No Core Modifications SEO (Search Eng…

2015-2016 ACM-ICPC, NEERC, Northern Subregional Contest 2019年10月11日 15:35-20:35(Solved 8,Penalty 675) 这两天好像回寝室太早了,导致早早地就躺在床上吸引蚊子.到睡觉的点的时候,蚊子们就已经嗷嗷待哺地聚集到了我的床边.凌晨2:00~4:00的时候被烦得,只能下床喷个六神+开个空调QwQ.早上起不来导致很多东西都咕咕咕了(比如今日中午的市中心觅食计划). 以后不出意外的话,我们队应该每周三&周六的这个…