 Fluorescent

Problem Description
Matt, a famous adventurer who once defeated a pack of dire wolves alone, found a lost court. Matt finds that there are N fluorescent lights which seem to be the stars from the firmament. What’s more, there are M switches that control these fluorescent lights. Each switch is connected to a group of lights. When Matt touches a switch, all the lights connected to it will change their states (turning the dark on, turning the bright off).Initially, all the fluorescent lights are dark. For each switch, Matt will touch it with probability 1 .
As a curious gentleman, Matt wants to calculate E[X3], where X represents the number of bright lights at the end, E[X3] represents the expectation of cube of X.
Input
The first line contains only one integer T , which indicates the number of test cases.For each test case, the first line contains N, M (1 ≤ N, M ≤ 50), denoting the number of fluorescent lights (numbered from 1 to N ) and the number of switches (numbered from 1 to M ).
M lines follow. The ith line begins with an integer Ki (1 ≤ Ki ≤ N ). Ki distinct integers lij(1 ≤ lij ≤ N ) follow, denoting the fluorescent lights that the ith switch controls.
Output
For each test case, output a single line “Case #x: y”, where x is the case number (starting from 1) and y is the answer. To avoid rounding error, the answer you should output is:E[X3] × 2M mod (109 + 7)
Sample Input
2
2 2
1 1
2 1 2
3 1
3 1 2 3Sample Output
Case #1: 10
Case #2: 27
Fluorescent _course
20170816Problem Description Matt, a famous adventurer who once defeated a pack of dire wolves alone, found a lost court. Matt finds that there are N fluorescent lights which seem to be the stars from the firmament. What’s more, there are M switches that control these fluorescent lights. Each switch is connected to a group of lights. When Matt touches a switch, all the lights connected to it will change their states (turning the dark on, turning the bright off). Initially, all the fluorescent lights are dark. For each switch, Matt will touch it with probability 1 . As a curious gentleman, Matt wants to calculate E[X3], where X represents the number of bright lights at the end, E[X3] represents the expectation of cube of X. Input The first line contains only one integer T , which indicates the number of test cases. For each test case, the first line contains N, M (1 ≤ N, M ≤ 50), denoting the number of fluorescent lights (numbered from 1 to N ) and the number of switches (numbered from 1 to M ). M lines follow. The ith line begins with an integer Ki (1 ≤ Ki ≤ N ). Ki distinct integers lij(1 ≤ lij ≤ N ) follow, denoting the fluorescent lights that the ith switch controls. Output For each test case, output a single line “Case #x: y”, where x is the case number (starting from 1) and y is the answer. To avoid rounding error, the answer you should output is: E[X3] × 2M mod (109 + 7) Sample Input 2 2 2 1 1 2 1 2 3 1 3 1 2 3 Sample Output Case #1: 10 Case #2: 27
Fluorescent 算法实现_course
20190829Problem Description Matt, a famous adventurer who once defeated a pack of dire wolves alone, found a lost court. Matt finds that there are N fluorescent lights which seem to be the stars from the firmament. What’s more, there are M switches that control these fluorescent lights. Each switch is connected to a group of lights. When Matt touches a switch, all the lights connected to it will change their states (turning the dark on, turning the bright off). Initially, all the fluorescent lights are dark. For each switch, Matt will touch it with probability 1 . As a curious gentleman, Matt wants to calculate E[X3], where X represents the number of bright lights at the end, E[X3] represents the expectation of cube of X. Input The first line contains only one integer T , which indicates the number of test cases. For each test case, the first line contains N, M (1 ≤ N, M ≤ 50), denoting the number of fluorescent lights (numbered from 1 to N ) and the number of switches (numbered from 1 to M ). M lines follow. The ith line begins with an integer Ki (1 ≤ Ki ≤ N ). Ki distinct integers lij(1 ≤ lij ≤ N ) follow, denoting the fluorescent lights that the ith switch controls. Output For each test case, output a single line “Case #x: y”, where x is the case number (starting from 1) and y is the answer. To avoid rounding error, the answer you should output is: E[X3] × 2M mod (109 + 7) Sample Input 2 2 2 1 1 2 1 2 3 1 3 1 2 3 Sample Output Case #1: 10 Case #2: 27
这个数据结构问题运用数列递推的思路怎么使用C语言解决这个问题_course
20190227Problem Description Matt, a famous adventurer who once defeated a pack of dire wolves alone, found a lost court. Matt finds that there are N fluorescent lights which seem to be the stars from the firmament. What’s more, there are M switches that control these fluorescent lights. Each switch is connected to a group of lights. When Matt touches a switch, all the lights connected to it will change their states (turning the dark on, turning the bright off). Initially, all the fluorescent lights are dark. For each switch, Matt will touch it with probability 1 . As a curious gentleman, Matt wants to calculate E[X3], where X represents the number of bright lights at the end, E[X3] represents the expectation of cube of X. Input The first line contains only one integer T , which indicates the number of test cases. For each test case, the first line contains N, M (1 ≤ N, M ≤ 50), denoting the number of fluorescent lights (numbered from 1 to N ) and the number of switches (numbered from 1 to M ). M lines follow. The ith line begins with an integer Ki (1 ≤ Ki ≤ N ). Ki distinct integers lij(1 ≤ lij ≤ N ) follow, denoting the fluorescent lights that the ith switch controls. Output For each test case, output a single line “Case #x: y”, where x is the case number (starting from 1) and y is the answer. To avoid rounding error, the answer you should output is: E[X3] × 2M mod (109 + 7) Sample Input 2 2 2 1 1 2 1 2 3 1 3 1 2 3 Sample Output Case #1: 10 Case #2: 27
求教大身，用C语言的算法实现mod 109+7算法问题_course
20181215Problem Description Matt, a famous adventurer who once defeated a pack of dire wolves alone, found a lost court. Matt finds that there are N fluorescent lights which seem to be the stars from the firmament. What’s more, there are M switches that control these fluorescent lights. Each switch is connected to a group of lights. When Matt touches a switch, all the lights connected to it will change their states (turning the dark on, turning the bright off). Initially, all the fluorescent lights are dark. For each switch, Matt will touch it with probability 1 . As a curious gentleman, Matt wants to calculate E[X3], where X represents the number of bright lights at the end, E[X3] represents the expectation of cube of X. Input The first line contains only one integer T , which indicates the number of test cases. For each test case, the first line contains N, M (1 ≤ N, M ≤ 50), denoting the number of fluorescent lights (numbered from 1 to N ) and the number of switches (numbered from 1 to M ). M lines follow. The ith line begins with an integer Ki (1 ≤ Ki ≤ N ). Ki distinct integers lij(1 ≤ lij ≤ N ) follow, denoting the fluorescent lights that the ith switch controls. Output For each test case, output a single line “Case #x: y”, where x is the case number (starting from 1) and y is the answer. To avoid rounding error, the answer you should output is: E[X3] × 2M mod (109 + 7) Sample Input 2 2 2 1 1 2 1 2 3 1 3 1 2 3 Sample Output Case #1: 10 Case #2: 27
开关的控制的一个编程题目，怎么使用C语言的程序编写的代码的形式去解决的呢？_course
20190601Problem Description Matt, a famous adventurer who once defeated a pack of dire wolves alone, found a lost court. Matt finds that there are N fluorescent lights which seem to be the stars from the firmament. What’s more, there are M switches that control these fluorescent lights. Each switch is connected to a group of lights. When Matt touches a switch, all the lights connected to it will change their states (turning the dark on, turning the bright off). Initially, all the fluorescent lights are dark. For each switch, Matt will touch it with probability 1 . As a curious gentleman, Matt wants to calculate E[X3], where X represents the number of bright lights at the end, E[X3] represents the expectation of cube of X. Input The first line contains only one integer T , which indicates the number of test cases. For each test case, the first line contains N, M (1 ≤ N, M ≤ 50), denoting the number of fluorescent lights (numbered from 1 to N ) and the number of switches (numbered from 1 to M ). M lines follow. The ith line begins with an integer Ki (1 ≤ Ki ≤ N ). Ki distinct integers lij(1 ≤ lij ≤ N ) follow, denoting the fluorescent lights that the ith switch controls. Output For each test case, output a single line “Case #x: y”, where x is the case number (starting from 1) and y is the answer. To avoid rounding error, the answer you should output is: E[X3] × 2M mod (109 + 7) Sample Input 2 2 2 1 1 2 1 2 3 1 3 1 2 3 Sample Output Case #1: 10 Case #2: 27
Mysqli第2行错误如何隔离'不影响文本区域之外的代码_course
20160331<div class="posttext" itemprop="text"> <p>I am getting an error code "error on line 2" regarding apostrophes. I think what is happening is in the text fields when a ' is typed it is effecting the code outside the "" and causing an error. How do i make marks within the text field not effect the remainder of the code?</p> <p>the html elements in question are q25 and q35</p> <p>The site is live at <a href="http://educationofthedesigner.com/survey.html" rel="nofollow">http://educationofthedesigner.com/survey.html</a> after you submit it sends you to the php page.</p> <p>error __</p> <pre><code>Error: INSERT INTO survey2 (Email, School, Major, Degree, Status, Sex, Age, Q7, Q8, Q9, Classes, Q11, Q12, Q13, Q14, Q15, Q16, Q17, Q18, Q19, Q20, Q21, Q22, Q23, Q24, Q25, Q26, Q27, Q28, Q29, Q30, Q31, Q32, Q33, Q34, Q35, Q36, Q37, Q38, Q39, Q40, Q41, Q42, Q43) VALUES ('', 'Purchase College', 'Graphic Design', 'BFA', 'Senior', 'Male', '1994', 'no', 'no', 'yes', 'branding, web/interactive, print, art direction, social design, design theory, design authorship, type design, book arts, printmaking, letterpress, design history', 'yes', '19 to 21', '11 to 20', 'no', '7', '3', '1', '8', '2', '10', '3', '3', 'no', '30+', 'We don't focus on skills/encouraging the development of a marketable portfolio at all. There are students in my program who still don't understand basic precepts of design, and more importantly don't understand how to teach themselves new techniques. We're rooted in a homogenous visual culture that encourages illiteracy in the tools of the trade as a hallmark of its style.', 'yes', 'studio', 'yes', 'yes', '2025', '4', '2', '6', 'on capus', 'A drab closet of a room filled with computers and devoid of windows and nonfluorescent light. Big tables for cutting. No food or drink.', 'financial', 'yes', 'no', '10', '7', 'yes', 'essential', 'Not Really') You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 't focus on skills/encouraging the development of a marketable portfolio at all. ' at line 2 </code></pre> </div>
Geometric Shapes _course
20170616Problem Description While creating a customer logo, ACM uses graphical utilities to draw a picture that can later be cut into special fluorescent materials. To ensure proper processing, the shapes in the picture cannot intersect. However, some logos contain such intersecting shapes. It is necessary to detect them and decide how to change the picture. Given a set of geometric shapes, you are to determine all of their intersections. Only outlines are considered, if a shape is completely inside another one, it is not counted as an intersection. Input Input contains several pictures. Each picture describes at most 26 shapes, each specified on a separate line. The line begins with an uppercase letter that uniquely identifies the shape inside the corresponding picture. Then there is a kind of the shape and two or more points, everything separated by at least one space. Possible shape kinds are: • square: Followed by two distinct points giving the opposite corners of the square. • rectangle: Three points are given, there will always be a right angle between the lines connecting the first point with the second and the second with the third. • line: Specifies a line segment, two distinct end points are given. • triangle: Three points are given, they are guaranteed not to be colinear. • polygon: Followed by an integer number N (3 ≤ N ≤ 20) and N points specifying vertices of the polygon in either clockwise or anticlockwise order. The polygon will never intersect itself and its sides will have nonzero length. All points are always given as two integer coordinates X and Y separated with a comma and enclosed in parentheses. You may assume that X, Y  ≤ 10000. The picture description is terminated by a line containing a single dash (“”). After the last picture, there is a line with one dot (“.”). Output For each picture, output one line for each of the shapes, sorted alphabetically by its identifier (X). The line must be one of the following: • “X has no intersections”, if X does not intersect with any other shapes. • “X intersects with A”, if X intersects with exactly 1 other shape. • “X intersects with A and B”, if X intersects with exactly 2 other shapes. • “X intersects with A, B, . . ., and Z”, if X intersects with more than 2 other shapes. Please note that there is an additional comma for more than two intersections. A, B, etc. are all intersecting shapes, sorted alphabetically. Print one empty line after each picture, including the last one. Sample Input A square (1,2) (3,2) F line (1,3) (4,4) W triangle (3,5) (5,5) (4,3) X triangle (7,2) (7,4) (5,3) S polygon 6 (9,3) (10,3) (10,4) (8,4) (8,1) (10,2) B rectangle (3,3) (7,5) (8,3)  B square (1,1) (2,2) A square (3,3) (4,4)  . Sample Output A has no intersections B intersects with S, W, and X F intersects with W S intersects with B W intersects with B and F X intersects with B A has no intersections B has no intersections
如何实现几何图形的识别，C语言的程序的实现_course
20190805Problem Description While creating a customer logo, ACM uses graphical utilities to draw a picture that can later be cut into special fluorescent materials. To ensure proper processing, the shapes in the picture cannot intersect. However, some logos contain such intersecting shapes. It is necessary to detect them and decide how to change the picture. Given a set of geometric shapes, you are to determine all of their intersections. Only outlines are considered, if a shape is completely inside another one, it is not counted as an intersection. Input Input contains several pictures. Each picture describes at most 26 shapes, each specified on a separate line. The line begins with an uppercase letter that uniquely identifies the shape inside the corresponding picture. Then there is a kind of the shape and two or more points, everything separated by at least one space. Possible shape kinds are: • square: Followed by two distinct points giving the opposite corners of the square. • rectangle: Three points are given, there will always be a right angle between the lines connecting the first point with the second and the second with the third. • line: Specifies a line segment, two distinct end points are given. • triangle: Three points are given, they are guaranteed not to be colinear. • polygon: Followed by an integer number N (3 ≤ N ≤ 20) and N points specifying vertices of the polygon in either clockwise or anticlockwise order. The polygon will never intersect itself and its sides will have nonzero length. All points are always given as two integer coordinates X and Y separated with a comma and enclosed in parentheses. You may assume that X, Y  ≤ 10000. The picture description is terminated by a line containing a single dash (“”). After the last picture, there is a line with one dot (“.”). Output For each picture, output one line for each of the shapes, sorted alphabetically by its identifier (X). The line must be one of the following: • “X has no intersections”, if X does not intersect with any other shapes. • “X intersects with A”, if X intersects with exactly 1 other shape. • “X intersects with A and B”, if X intersects with exactly 2 other shapes. • “X intersects with A, B, . . ., and Z”, if X intersects with more than 2 other shapes. Please note that there is an additional comma for more than two intersections. A, B, etc. are all intersecting shapes, sorted alphabetically. Print one empty line after each picture, including the last one. Sample Input A square (1,2) (3,2) F line (1,3) (4,4) W triangle (3,5) (5,5) (4,3) X triangle (7,2) (7,4) (5,3) S polygon 6 (9,3) (10,3) (10,4) (8,4) (8,1) (10,2) B rectangle (3,3) (7,5) (8,3)  B square (1,1) (2,2) A square (3,3) (4,4)  . Sample Output A has no intersections B intersects with S, W, and X F intersects with W S intersects with B W intersects with B and F X intersects with B A has no intersections B has no intersections
求助Geometric Shapes集合问题_course
20181028Problem Description While creating a customer logo, ACM uses graphical utilities to draw a picture that can later be cut into special fluorescent materials. To ensure proper processing, the shapes in the picture cannot intersect. However, some logos contain such intersecting shapes. It is necessary to detect them and decide how to change the picture. Given a set of geometric shapes, you are to determine all of their intersections. Only outlines are considered, if a shape is completely inside another one, it is not counted as an intersection. Input Input contains several pictures. Each picture describes at most 26 shapes, each specified on a separate line. The line begins with an uppercase letter that uniquely identifies the shape inside the corresponding picture. Then there is a kind of the shape and two or more points, everything separated by at least one space. Possible shape kinds are: • square: Followed by two distinct points giving the opposite corners of the square. • rectangle: Three points are given, there will always be a right angle between the lines connecting the first point with the second and the second with the third. • line: Specifies a line segment, two distinct end points are given. • triangle: Three points are given, they are guaranteed not to be colinear. • polygon: Followed by an integer number N (3 ≤ N ≤ 20) and N points specifying vertices of the polygon in either clockwise or anticlockwise order. The polygon will never intersect itself and its sides will have nonzero length. All points are always given as two integer coordinates X and Y separated with a comma and enclosed in parentheses. You may assume that X, Y  ≤ 10000. The picture description is terminated by a line containing a single dash (“”). After the last picture, there is a line with one dot (“.”). Output For each picture, output one line for each of the shapes, sorted alphabetically by its identifier (X). The line must be one of the following: • “X has no intersections”, if X does not intersect with any other shapes. • “X intersects with A”, if X intersects with exactly 1 other shape. • “X intersects with A and B”, if X intersects with exactly 2 other shapes. • “X intersects with A, B, . . ., and Z”, if X intersects with more than 2 other shapes. Please note that there is an additional comma for more than two intersections. A, B, etc. are all intersecting shapes, sorted alphabetically. Print one empty line after each picture, including the last one. Sample Input A square (1,2) (3,2) F line (1,3) (4,4) W triangle (3,5) (5,5) (4,3) X triangle (7,2) (7,4) (5,3) S polygon 6 (9,3) (10,3) (10,4) (8,4) (8,1) (10,2) B rectangle (3,3) (7,5) (8,3)  B square (1,1) (2,2) A square (3,3) (4,4)  . Sample Output A has no intersections B intersects with S, W, and X F intersects with W S intersects with B W intersects with B and F X intersects with B A has no intersections B has no intersections
几何形状的边的计算问题，怎么采用C语言的程序的编写的手段实现的？_course
20190503Problem Description While creating a customer logo, ACM uses graphical utilities to draw a picture that can later be cut into special fluorescent materials. To ensure proper processing, the shapes in the picture cannot intersect. However, some logos contain such intersecting shapes. It is necessary to detect them and decide how to change the picture. Given a set of geometric shapes, you are to determine all of their intersections. Only outlines are considered, if a shape is completely inside another one, it is not counted as an intersection. Input Input contains several pictures. Each picture describes at most 26 shapes, each specified on a separate line. The line begins with an uppercase letter that uniquely identifies the shape inside the corresponding picture. Then there is a kind of the shape and two or more points, everything separated by at least one space. Possible shape kinds are: • square: Followed by two distinct points giving the opposite corners of the square. • rectangle: Three points are given, there will always be a right angle between the lines connecting the first point with the second and the second with the third. • line: Specifies a line segment, two distinct end points are given. • triangle: Three points are given, they are guaranteed not to be colinear. • polygon: Followed by an integer number N (3 ≤ N ≤ 20) and N points specifying vertices of the polygon in either clockwise or anticlockwise order. The polygon will never intersect itself and its sides will have nonzero length. All points are always given as two integer coordinates X and Y separated with a comma and enclosed in parentheses. You may assume that X, Y  ≤ 10000. The picture description is terminated by a line containing a single dash (“”). After the last picture, there is a line with one dot (“.”). Output For each picture, output one line for each of the shapes, sorted alphabetically by its identifier (X). The line must be one of the following: • “X has no intersections”, if X does not intersect with any other shapes. • “X intersects with A”, if X intersects with exactly 1 other shape. • “X intersects with A and B”, if X intersects with exactly 2 other shapes. • “X intersects with A, B, . . ., and Z”, if X intersects with more than 2 other shapes. Please note that there is an additional comma for more than two intersections. A, B, etc. are all intersecting shapes, sorted alphabetically. Print one empty line after each picture, including the last one. Sample Input A square (1,2) (3,2) F line (1,3) (4,4) W triangle (3,5) (5,5) (4,3) X triangle (7,2) (7,4) (5,3) S polygon 6 (9,3) (10,3) (10,4) (8,4) (8,1) (10,2) B rectangle (3,3) (7,5) (8,3)  B square (1,1) (2,2) A square (3,3) (4,4)  . Sample Output A has no intersections B intersects with S, W, and X F intersects with W S intersects with B W intersects with B and F X intersects with B A has no intersections B has no intersections
平面上的几何图形如何计算交集，采用的C语言的程序的设计的编写出来的程序的代码怎么做_course
20190622Problem Description While creating a customer logo, ACM uses graphical utilities to draw a picture that can later be cut into special fluorescent materials. To ensure proper processing, the shapes in the picture cannot intersect. However, some logos contain such intersecting shapes. It is necessary to detect them and decide how to change the picture. Given a set of geometric shapes, you are to determine all of their intersections. Only outlines are considered, if a shape is completely inside another one, it is not counted as an intersection. Input Input contains several pictures. Each picture describes at most 26 shapes, each specified on a separate line. The line begins with an uppercase letter that uniquely identifies the shape inside the corresponding picture. Then there is a kind of the shape and two or more points, everything separated by at least one space. Possible shape kinds are: • square: Followed by two distinct points giving the opposite corners of the square. • rectangle: Three points are given, there will always be a right angle between the lines connecting the first point with the second and the second with the third. • line: Specifies a line segment, two distinct end points are given. • triangle: Three points are given, they are guaranteed not to be colinear. • polygon: Followed by an integer number N (3 ≤ N ≤ 20) and N points specifying vertices of the polygon in either clockwise or anticlockwise order. The polygon will never intersect itself and its sides will have nonzero length. All points are always given as two integer coordinates X and Y separated with a comma and enclosed in parentheses. You may assume that X, Y  ≤ 10000. The picture description is terminated by a line containing a single dash (“”). After the last picture, there is a line with one dot (“.”). Output For each picture, output one line for each of the shapes, sorted alphabetically by its identifier (X). The line must be one of the following: • “X has no intersections”, if X does not intersect with any other shapes. • “X intersects with A”, if X intersects with exactly 1 other shape. • “X intersects with A and B”, if X intersects with exactly 2 other shapes. • “X intersects with A, B, . . ., and Z”, if X intersects with more than 2 other shapes. Please note that there is an additional comma for more than two intersections. A, B, etc. are all intersecting shapes, sorted alphabetically. Print one empty line after each picture, including the last one. Sample Input A square (1,2) (3,2) F line (1,3) (4,4) W triangle (3,5) (5,5) (4,3) X triangle (7,2) (7,4) (5,3) S polygon 6 (9,3) (10,3) (10,4) (8,4) (8,1) (10,2) B rectangle (3,3) (7,5) (8,3)  B square (1,1) (2,2) A square (3,3) (4,4)  . Sample Output A has no intersections B intersects with S, W, and X F intersects with W S intersects with B W intersects with B and F X intersects with B A has no intersections B has no intersections
几何图形的相交的判断的问题，要求求出相交图形的名字，用C语言进行_course
20190226Problem Description While creating a customer logo, ACM uses graphical utilities to draw a picture that can later be cut into special fluorescent materials. To ensure proper processing, the shapes in the picture cannot intersect. However, some logos contain such intersecting shapes. It is necessary to detect them and decide how to change the picture. Given a set of geometric shapes, you are to determine all of their intersections. Only outlines are considered, if a shape is completely inside another one, it is not counted as an intersection. Input Input contains several pictures. Each picture describes at most 26 shapes, each specified on a separate line. The line begins with an uppercase letter that uniquely identifies the shape inside the corresponding picture. Then there is a kind of the shape and two or more points, everything separated by at least one space. Possible shape kinds are: • square: Followed by two distinct points giving the opposite corners of the square. • rectangle: Three points are given, there will always be a right angle between the lines connecting the first point with the second and the second with the third. • line: Specifies a line segment, two distinct end points are given. • triangle: Three points are given, they are guaranteed not to be colinear. • polygon: Followed by an integer number N (3 ≤ N ≤ 20) and N points specifying vertices of the polygon in either clockwise or anticlockwise order. The polygon will never intersect itself and its sides will have nonzero length. All points are always given as two integer coordinates X and Y separated with a comma and enclosed in parentheses. You may assume that X, Y  ≤ 10000. The picture description is terminated by a line containing a single dash (“”). After the last picture, there is a line with one dot (“.”). Output For each picture, output one line for each of the shapes, sorted alphabetically by its identifier (X). The line must be one of the following: • “X has no intersections”, if X does not intersect with any other shapes. • “X intersects with A”, if X intersects with exactly 1 other shape. • “X intersects with A and B”, if X intersects with exactly 2 other shapes. • “X intersects with A, B, . . ., and Z”, if X intersects with more than 2 other shapes. Please note that there is an additional comma for more than two intersections. A, B, etc. are all intersecting shapes, sorted alphabetically. Print one empty line after each picture, including the last one. Sample Input A square (1,2) (3,2) F line (1,3) (4,4) W triangle (3,5) (5,5) (4,3) X triangle (7,2) (7,4) (5,3) S polygon 6 (9,3) (10,3) (10,4) (8,4) (8,1) (10,2) B rectangle (3,3) (7,5) (8,3)  B square (1,1) (2,2) A square (3,3) (4,4)  . Sample Output A has no intersections B intersects with S, W, and X F intersects with W S intersects with B W intersects with B and F X intersects with B A has no intersections B has no intersections
Geometric Shapes 关于几何图形的问题_course
20190909Problem Description While creating a customer logo, ACM uses graphical utilities to draw a picture that can later be cut into special fluorescent materials. To ensure proper processing, the shapes in the picture cannot intersect. However, some logos contain such intersecting shapes. It is necessary to detect them and decide how to change the picture. Given a set of geometric shapes, you are to determine all of their intersections. Only outlines are considered, if a shape is completely inside another one, it is not counted as an intersection. Input Input contains several pictures. Each picture describes at most 26 shapes, each specified on a separate line. The line begins with an uppercase letter that uniquely identifies the shape inside the corresponding picture. Then there is a kind of the shape and two or more points, everything separated by at least one space. Possible shape kinds are: • square: Followed by two distinct points giving the opposite corners of the square. • rectangle: Three points are given, there will always be a right angle between the lines connecting the first point with the second and the second with the third. • line: Specifies a line segment, two distinct end points are given. • triangle: Three points are given, they are guaranteed not to be colinear. • polygon: Followed by an integer number N (3 ≤ N ≤ 20) and N points specifying vertices of the polygon in either clockwise or anticlockwise order. The polygon will never intersect itself and its sides will have nonzero length. All points are always given as two integer coordinates X and Y separated with a comma and enclosed in parentheses. You may assume that X, Y  ≤ 10000. The picture description is terminated by a line containing a single dash (“”). After the last picture, there is a line with one dot (“.”). Output For each picture, output one line for each of the shapes, sorted alphabetically by its identifier (X). The line must be one of the following: • “X has no intersections”, if X does not intersect with any other shapes. • “X intersects with A”, if X intersects with exactly 1 other shape. • “X intersects with A and B”, if X intersects with exactly 2 other shapes. • “X intersects with A, B, . . ., and Z”, if X intersects with more than 2 other shapes. Please note that there is an additional comma for more than two intersections. A, B, etc. are all intersecting shapes, sorted alphabetically. Print one empty line after each picture, including the last one. Sample Input A square (1,2) (3,2) F line (1,3) (4,4) W triangle (3,5) (5,5) (4,3) X triangle (7,2) (7,4) (5,3) S polygon 6 (9,3) (10,3) (10,4) (8,4) (8,1) (10,2) B rectangle (3,3) (7,5) (8,3)  B square (1,1) (2,2) A square (3,3) (4,4)  . Sample Output A has no intersections B intersects with S, W, and X F intersects with W S intersects with B W intersects with B and F X intersects with B A has no intersections B has no intersections
关于几何形状的排列求交集，怎么采用C语言的程序的编写的技术有一个比较好的解答？_course
20190701Problem Description While creating a customer logo, ACM uses graphical utilities to draw a picture that can later be cut into special fluorescent materials. To ensure proper processing, the shapes in the picture cannot intersect. However, some logos contain such intersecting shapes. It is necessary to detect them and decide how to change the picture. Given a set of geometric shapes, you are to determine all of their intersections. Only outlines are considered, if a shape is completely inside another one, it is not counted as an intersection. Input Input contains several pictures. Each picture describes at most 26 shapes, each specified on a separate line. The line begins with an uppercase letter that uniquely identifies the shape inside the corresponding picture. Then there is a kind of the shape and two or more points, everything separated by at least one space. Possible shape kinds are: • square: Followed by two distinct points giving the opposite corners of the square. • rectangle: Three points are given, there will always be a right angle between the lines connecting the first point with the second and the second with the third. • line: Specifies a line segment, two distinct end points are given. • triangle: Three points are given, they are guaranteed not to be colinear. • polygon: Followed by an integer number N (3 ≤ N ≤ 20) and N points specifying vertices of the polygon in either clockwise or anticlockwise order. The polygon will never intersect itself and its sides will have nonzero length. All points are always given as two integer coordinates X and Y separated with a comma and enclosed in parentheses. You may assume that X, Y  ≤ 10000. The picture description is terminated by a line containing a single dash (“”). After the last picture, there is a line with one dot (“.”). Output For each picture, output one line for each of the shapes, sorted alphabetically by its identifier (X). The line must be one of the following: • “X has no intersections”, if X does not intersect with any other shapes. • “X intersects with A”, if X intersects with exactly 1 other shape. • “X intersects with A and B”, if X intersects with exactly 2 other shapes. • “X intersects with A, B, . . ., and Z”, if X intersects with more than 2 other shapes. Please note that there is an additional comma for more than two intersections. A, B, etc. are all intersecting shapes, sorted alphabetically. Print one empty line after each picture, including the last one. Sample Input A square (1,2) (3,2) F line (1,3) (4,4) W triangle (3,5) (5,5) (4,3) X triangle (7,2) (7,4) (5,3) S polygon 6 (9,3) (10,3) (10,4) (8,4) (8,1) (10,2) B rectangle (3,3) (7,5) (8,3)  B square (1,1) (2,2) A square (3,3) (4,4)  . Sample Output A has no intersections B intersects with S, W, and X F intersects with W S intersects with B W intersects with B and F X intersects with B A has no intersections B has no intersections
多种几何图案图形的匹配算法问题，怎么才能采用C语言程序编写的过程实现这个算法的计算？_course
20190515Problem Description While creating a customer logo, ACM uses graphical utilities to draw a picture that can later be cut into special fluorescent materials. To ensure proper processing, the shapes in the picture cannot intersect. However, some logos contain such intersecting shapes. It is necessary to detect them and decide how to change the picture. Given a set of geometric shapes, you are to determine all of their intersections. Only outlines are considered, if a shape is completely inside another one, it is not counted as an intersection. Input Input contains several pictures. Each picture describes at most 26 shapes, each specified on a separate line. The line begins with an uppercase letter that uniquely identifies the shape inside the corresponding picture. Then there is a kind of the shape and two or more points, everything separated by at least one space. Possible shape kinds are: • square: Followed by two distinct points giving the opposite corners of the square. • rectangle: Three points are given, there will always be a right angle between the lines connecting the first point with the second and the second with the third. • line: Specifies a line segment, two distinct end points are given. • triangle: Three points are given, they are guaranteed not to be colinear. • polygon: Followed by an integer number N (3 ≤ N ≤ 20) and N points specifying vertices of the polygon in either clockwise or anticlockwise order. The polygon will never intersect itself and its sides will have nonzero length. All points are always given as two integer coordinates X and Y separated with a comma and enclosed in parentheses. You may assume that X, Y  ≤ 10000. The picture description is terminated by a line containing a single dash (“”). After the last picture, there is a line with one dot (“.”). Output For each picture, output one line for each of the shapes, sorted alphabetically by its identifier (X). The line must be one of the following: • “X has no intersections”, if X does not intersect with any other shapes. • “X intersects with A”, if X intersects with exactly 1 other shape. • “X intersects with A and B”, if X intersects with exactly 2 other shapes. • “X intersects with A, B, . . ., and Z”, if X intersects with more than 2 other shapes. Please note that there is an additional comma for more than two intersections. A, B, etc. are all intersecting shapes, sorted alphabetically. Print one empty line after each picture, including the last one. Sample Input A square (1,2) (3,2) F line (1,3) (4,4) W triangle (3,5) (5,5) (4,3) X triangle (7,2) (7,4) (5,3) S polygon 6 (9,3) (10,3) (10,4) (8,4) (8,1) (10,2) B rectangle (3,3) (7,5) (8,3)  B square (1,1) (2,2) A square (3,3) (4,4)  . Sample Output A has no intersections B intersects with S, W, and X F intersects with W S intersects with B W intersects with B and F X intersects with B A has no intersections B has no intersections
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