convex hexagon

The main topic: give the plane n points, to find the smallest circle coverage.Idea: The round cover problem is only related to the points on the convex hull in all points, so the convex hull is first asked, then the data range is reduced. It's probably just a little bit of logn left. This way, you can have a random wave.First find all three points of the circle, and then find two points for the diameter of

The first time to play dynamic convex package maintenance dp, feel learned a super many things.First of all, set is so easy to use!!! Two queries can be implemented by controlling a flag, maintaining the convex hull and finding the slope KBut it's just overloaded operators and some of the details are disgusting, 90 lines to solveThere is a CDQ in the back, find time to learn, to see if you can deal with a l

It is known that V1.. VN is a set of Convex Polygon vertices with a disordered surround order. Steps: 1. in the plane, take any direction (any two points can be connected. If it is a 2D vertex, you can directly go to the X axis or Y axis) as the direction, find the vertices VZ and the secondary vertices Vy in this direction. 2. take the vzvy direction as the base Dir, And take VZ to the VX of other vertices (VX is V1... in VN, except for any poin

The convex hull is obtained first, then the area is calculated by the convex hull, and the answer is divided by 50.Code:#include POJ 3348 Cows (convex hull + polygon area)

Language: Grandpa's EstateTime Limit: 1000 MS Memory Limit: 10000 KTotal Submissions: 8990 Accepted: 2383 DescriptionKamran the Believer inherits a grandmother's convex polygon estate. the perimeter of the manor is surrounded by ropes and wooden piles. but some ropes and stakes are missing. check whether the manor surrounded by remaining wooden piles is a stable convex bag (that is, the remaining nail can d

Bridge Communication SS Islands Time Limit:1000 MS Memory Limit:65536 K Total Submissions:8071 Accepted:2364 Special Judge Description Thousands of thousands years ago there was a small kingdom located in the middle of the Pacific Ocean. the territory of the kingdom consists two separated islands. due to the impact of the ocean current, the shapes of both the islands became convex polygons. the king of t

To give you illustrator software users to detailed analysis of the design of concave-convex printing text effect of the drawing tutorial. Tutorial Sharing: Well, the above information is small set for you illustrator of this software users brought to the detailed design of concave-convex printing text effect of the entire content of the drawing tutorial share, you see the u

Problem Solving Ideas: The problem is to ask for the convex hull area, then divide by 50 on the line. Do not know what is convex bag can go to Baidu For area, select a point on the convex hull as the base point, and then divide the polygon into a lot of triangles, and then use the cross product to calculate the Triangle area can be. #include

Heard that there is a very high-end thing called dynamic Convex package maintenance DP is like learning, but in between I will not be dynamic convex bag to learn the next, or quite magical said, maintenance up and down convex package of writing although play a bit more but also just maintenance copy sticky thing only.First of all, the dynamic

1298 convex Bao Zhouchangtime limit: 1 sspace limit: 128000 KBtitle level: Diamonds Diamond SolvingView Run ResultsTitle DescriptionDescriptionThe n points on the plane are given, and the circumference of the convex hull formed by these n points is calculated.Convex hull definition: the smallest convex polygon that can cover this n-point.Enter a descriptionInput

Title Link: http://acm.swust.edu.cn/problem/567/Time limit (ms): 655,351 Tigers since the Your task is to let the computer calculate the tiger's position by GPs-given the coordinates of the tiger and the coordinates of the cage, to hide in the hole, or to run outside. Description input data has n+2 line:The first line is a data N (0The second to n+1 rows are n coordinates x, y, followed by a counterclockwise order.The last line is the tiger's coordinates x, y;Note: Only one set of test data, the

Http://poj.org/problem? Id = 1228 Students say this is a stable convex bag. I think it is a convex bag. The so-called stability is to determine whether the original convex hull can be added to get a larger convex hull, and this convex hull contains all the points on the orig

Realization function: Find out two-dimensional convex hull of a pair of scattered points in the plane (see Codevs 1298)It's an amazing algorithm--sort the points by the coordinates, then turn left as we know it, find the convex hull of the half, and then turn to the other side of the convex bag.I used to be because of the idea of one step, so every time I kneel v

The main idea : first give a circle radius and center, and then give a polygon all the points (polygon according to clockwise or counterclockwise), this polygon is convex, if it is convex polygon in judging whether the circle is within this convex polygon. Analysis: Judge Convex polygon can use adjacent three points cr

Scrambled Polygon Time Limit: 1000MS Memory Limit: 30000K Total Submissions: 8005 Accepted: 3798 DescriptionA closed polygon is a figure bounded by a finite number of line segments. The intersections of the bounding line segments is called the vertices of the polygon. When one starts at any vertex of a closed polygon and traverses each bounding line segment exactly once, one comes back to The starting vertex.A closed polygon is call

400300 300400 300400 400500 400500 200350 200200 200 Sample output 1628 Hint The result is rounded to the nearest integer. Source The answer to the northeastern Europe 2001 question is to add a circle perimeter to the circumference of the convex bag, that is, a rounded polygon surrounded by the convex bag, but I don't know why the rounded corners add up to a circle. Each rounded corner is the center

Topic: A given plane, multiple insertion points and circles, each insertion point asks whether the currently inserted point is in all of the previously inserted circles and at least one circleMaintaining these points and circles directly with the data structure is not very good to write, we consider CDQ partitionFor each layer of division, we need to find out whether all the circles in [L,mid] are covered by this point for each point in [Mid+1,r]The coordinates of the SetPoint are (x0,y0), then

The old version of the VPN system GETSHELL of wangshen (also affects multiple VPN manufacturers' devices, such as Wangyu Shenzhou, tianrongxin, Xi'an wangying, weishitong, Geda zhengyuan, American concave and convex, and ANIX in Germany) In the/admin/system/backup_action.php file if (isset($_REQUEST['cmd']))$cmd = $_REQUEST['cmd'];else$cmd = "NULL";$with_cert = 1;$pass = "";include_once "management/system.php";if ($cmd == $LANG_IMPORT) {if ($_FILES['u

// Convex hull. cpp: defines the entry point of the application. // # Include "stdafx. H "# include" convex hull. H "using namespace STD; # define max_loadstring 100 # define maxpoints 13 // global variable: hinstance hinst; // the current instance tchar sztitle [max_loadstring]; // Title Bar text tchar szwindowclass [max_loadstring]; // main window class name typedef vector Output result:

[Problem description] In a convex polygon, the polygon is divided into several triangles by several diagonal lines that do not overlap each other. The current task is to input the number of edges N of the convex polygon on the keyboard, and calculate the number of different split schemes CN. For example, if n = 5, there are 5 different solutions, so cn = 5. [Problem Analysis] Catalan count ...... As you may