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three test cases.Sample Input3 5 -2 5 0 0 6 5 4 0 2 3 4 2 3 0 4 4 0 0 0 4 5 14 6 105 10 6 14Sample OutputYes NO YesTest instructions; In the coordinates given in the point, look for a vertical symmetry axis, let these points symmetric about it, if it exists, output yes, otherwise output noRead a lot of people's blog, most of t

Given coordinates, calculate whether can find a vertical line, so that the left and right sides of the point symmetry Train of thought: The input process calculates the leftmost and the most right boundary, then calculates the midpoint value, then carries on the traversal to each point, if cannot find one point satisfies the x1+x2=mid*2y1==y2, then explained that, the direct break, if the traversal is complete, the explanation all conforms to the idea

Label: OS uses SP BS as to apply nbsp method C This article focuses on the monotonicity, parity, and periodicity of functions. However, there are many questions about function symmetry, continuity, and concave and convex. In particular, symmetry, because the textbook has a scattered introduction to it, such as the symmetry axis of the quadratic function, the

P1227 [JSOI2008] Perfect symmetry title descriptionDuring the summit, a number of bodyguards must be used to defend the representatives of the countries attending the Conference. In addition to being protected by his own personal bodyguard, the organizers also assigned some other agents and snipers to protect them. In order to make their work fruitful, the security of the person being defended is ensured as far as possible, and the bodyguards are assi

Title DescriptionDuring the summit, a number of bodyguards must be used to defend the representatives of the countries attending the Conference. In addition to being protected by his own personal bodyguard, the organizers also assigned some other agents and snipers to protect them. In order to make their work fruitful, the security of the person being defended is ensured as far as possible, and the bodyguards are assigned to the various directions of the protector.The Bodyguard's best standing p

Perfect symmetry.Title DescriptionDuring the summit, many bodyguards must be used to defend NATO's national representatives. In addition to being protected by his own personal bodyguard, the organizers also assigned some other agents and snipers to protect them. In order to make their work fruitful, the security of the person being defended is ensured as far as possible, and the bodyguards are assigned to the various directions of the protector.The Bodyguard's best standing position should be th

ZBrush software Intelligent and user-friendly workflow allows users to improve work efficiency in the creation, experience the fun of creation, speaking of intelligence has to mention is ZBrush to provide us with the intelligent symmetry function, so-called intelligent symmetry is when you are editing half of the object model, Perform related actions the other half of the model will automatically complete t

Title Description DescriptionDuring the summit, a number of bodyguards must be used to defend the representatives of the countries attending the Conference. In addition to being protected by his own personal bodyguard, the organizers also assigned some other agents and snipers to protect them. In order to make their work fruitful, the security of the person being defended is ensured as far as possible, and the bodyguards are assigned to the various directions of the protector.The Bodyguard's bes

As a child, I like butterflies, feeling that this is nature's most magical, when their wings open, always can't help admiring their beautiful elegance and colorful colors. More importantly, this innate sense of symmetry is breathtaking. Symmetrical style Gestalt-A theory of human behavior that describes the thought structure of human beings arranging visual data-thinks humans will naturally see things in order. In other words, our eyes

Title DescriptionDuring the summit, a number of bodyguards must be used to defend the representatives of the countries attending the Conference. In addition to being protected by his own personal bodyguard, the organizers also assigned some other agents and snipers to protect them. In order to make their work fruitful, the security of the person being defended is ensured as far as possible, and the bodyguards are assigned to the various directions of the protector. The Bodyguard's best standing

Title DescriptionDuring the summit, a number of bodyguards must be used to defend the representatives of the countries attending the Conference. In addition to being protected by his own personal bodyguard, the organizers also assigned some other agents and snipers to protect them. In order to make their work fruitful, the security of the person being defended is ensured as far as possible, and the bodyguards are assigned to the various directions of the protector.The Bodyguard's best standing p

In digital signal processing, the system is often required to have linear phase. For example, in the filter design, the linear phase characteristics of the FIR filter make it favored.From the mathematical concept, the linear phase is the requirement that the phase frequency characteristic of the system is a straight line. And from the mathematical formula, it is easy to prove that if the system impulse response satisfies the condition of symmetry, whe

In digital signal processing, the system is often required to have linear phase. For example, in the filter design, the linear phase characteristics of the FIR filter make it favored.From the mathematical concept, the linear phase is the requirement that the phase frequency characteristic of the system is a straight line. And from the mathematical formula, it is easy to prove that if the system impulse response satisfies the condition of symmetry, whe

according to the symmetry characteristic to detect the obstacle, according to the general Qualitative analysis method , We can only know whether the obstacle is symmetrical , But it is not enough to use the qualitative analysis of symmetry , it must be able to be quantitatively described in mathematical form , and the quantitative analysis of symmetry is intro

1. Topics Given a binary tree, check whether it is a mirror of the itself (ie, symmetric around its center). For example, this binary tree is symmetric: 1 /\ 2 2 /\/\ 3 4 4 3 But the following are not: 1 /\ 2 2 \ \ 3 3 2. AnalysisTo determine whether a binary tree itself is mirror-symmetric, this problem can be translated into: whether the Zuozi of the two-fork tree and the right subtree are mirrored symmetrically. Once the problem has been transformed,

A simple polygon is a polygon with non-intersecting edges, also known as Jordan polygon, because the Jordan curve theorem can be used to prove that such polygon can divide the plane into two areas, namely, the area and the area. When I saw this question, it suddenly hurt. I had a similar problem in both the fjnu competition and the South China Competition in Changsha. The sides of the fjnu competition were parallel to the X and Y axes, you only need to enumerate the

1100: [POI2007] symmetry OSI time limit:10 Sec Memory limit:162 MBsubmit:630 solved:243[Submit] [Status] [Discuss] DescriptionThe FGD children--a young mathematician famous--has a small mm,yours. FGD children like his mm very much, so he is very happyHelp his mm to do maths homework. But, like all scientific containers, the FGD brain refuses to keep repeating the same questions. Unfortunately,Yes, yours was a very hardworking student, so she

Title Address: http://acm.fzu.edu.cn/problem.php?pid=2035In fact, the problem is the same: http://acm.hdu.edu.cn/showproblem.php?pid=3902The topic is also very understood, is to deal with how to judge whether the multilateral line is symmetrical.First find the midpoint of all points, then a total of 2xN points, and then check whether the XY line symmetryIf there is an axis of symmetry, it must be a straight line of point I and Point i+n, then verify t

DescriptionAfter taking a modern art class, Farmer John had become interested in finding geometric patterns in everything around his Farm. He carefully plots the locations of his N cows (2 After a modern art class, FJ began to be interested in geometric patterns in his farm. He plans to place the cows on a two-dimensional plane of N distinct points (1Input* Line 1:the a single integer N.* Lines 2..1+n:line i+1 contains, space-separated integers representing the x and Y coordinates of the ith cow

Links: http://www.lydsy.com/JudgeOnline/problem.php?id=1100Analysis: Convert the polygon to the following ring:Angle 0->0 to 1 side length, angle 1->1 to 2 side length->...-> angle n-1->n-1 to 0 edge length. Save it in S, and then copy the S again to the back.Then the axis of symmetry I is enumerated, nothing but the edge or vertex, if I is the axis of symmetry, then [I-n,i+n] is a palindrome string.The max