Pete and Bob invented a new interesting game. Bob takes a sheet of paper and locates a Cartesian coordinate system on it as follows: point (0, 0) is located in the bottom-left corner, Ox axis is directed right, Oy axis is directed up. Pete gives Bob…

D. Points time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Pete and Bob invented a new interesting game. Bob takes a sheet of paper and locates a Cartesian coordinate system on it as follow…

题目链接: huangjing 题意:给了三种操作 1:add(x,y)将这个点增加二维坐标系 2:remove(x,y)将这个点从二维坐标系移除. 3:find(x,y)就是找到在(x,y)右上方的第一个点. 思路:我们能够建立n个set以x为横坐标,那么我们这个题就转化为找一个最小的x是否存在满足条件,那么x一旦被找到.那么纵坐标就自然而然的找到了.当然更新操作就是对maxy的维护,然后查询操作就是找出一个最小的x.. 还有由于n很大,所以要採用离散化的方法.然后进行离线处理.还是就是掌握s…

开始想不通,后来看网上说是set,就有一个想法是对每个x建一个set...然后又想直接建立两重的set就好,最后发现不行,自己想多了...  题意是给你三种操作:add (x y) 平面添加(x y)这个点 remove (x y)平面删除(x y)这个点 find (x y) 查找(x y)这个点严格的右上方中最左边的点,有多个就再找最下方的点,输出 其实想通了还是比较简单的,我的想法就是对于x先排序再对y排序,这样建一颗线段树,用处在于:添加和删除都可以当成单点更新,只需要记录最大值就好.f…

D. Points Time Limit: 1 Sec  Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/19/problem/D Description Pete and Bob invented a new interesting game. Bob takes a sheet of paper and locates a Cartesian coordinate system on it as follows: point (…

D. Points time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Pete and Bob invented a new interesting game. Bob takes a sheet of paper and locates a Cartesian coordinate system on it as follow…

http://codeforces.com/contest/872/problem/E E. Points, Lines and Ready-made Titles time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output You are given n distinct points on a plane with integral…

Description Little Petya likes points a lot. Recently his mom has presented him n points lying on the line OX. Now Petya is wondering in how many ways he can choose three distinct points so that the distance between the two farthest of them doesn't e…

题目描述 On a plane are nn points ( x_{i}xi​ , y_{i}yi​ ) with integer coordinates between 00 and 10^{6}106 . The distance between the two points with numbers aa and bb is said to be the following value:  (the distance calculated by such formula is calle…

大一生活真 特么 ”丰富多彩“ ,多彩到我要忙到哭泣,身为班长,很多班级的事情需要管理,也是,什么东西都得体验学一学,从学生会主席.团委团总支.社团社长都体验过一番了,现在差个班长也没试过,就来体验了一番哈哈哈,其实这种精心服务一个班级的人还是很棒的一种感觉呢.思考思考最近的任务啊: (1)英语剧 (2)三下乡公益策划 (3)兼职 - 影视剧组后期特效 (3)三月底程序设计大赛天梯赛 (4)班会以及班级细节事件处理 (5)多模态视频处理 (6)兼职 - 校方艺考航拍记录 (7)六月四级考试和三下…