several intervals to cover the [0,m] range completely. Minimum required quantity. If the output 0 cannot be overwritten.Thought: The greedy thought. Sort the intervals by r from large to small. Then meet a satisfied [Li,ri] and update the narrowing interval. Until fully covered.Note [L,r] only satisfies the condition that L is less than or equal and R is greater than the left end of the current coverage interval. To be selected.#include #includeusing
Minimal coverage
The ProblemGiven several segments of line (int the X axis) with coordinates [Li, Ri]. you are to choose the minimal amount of them, such they wocould completely cover the segment [0, M].
The Input
The first line is the number of test cases, followed by a blank line.
Each test case in the input shoshould contains an integer M (1
Each test case will be separated by a single line.
The OutputFor each test case, in the first line of outp
Question:
There are N closed intervals [ai, BI] On the number axis. Select as few intervals as possible to overwrite a specified line segment [0, m]
Algorithm:
[Start, end] indicates the covered range.
This is greedy.
Sort the intervals first by the Left endpoint from small to large, and update start to end. If interval 1 is on the right end of start, there is no solution, because other intervals are not likely to overwrite
In the remaining range that can overwrite the start, select the range th
A classic question that I saw a long time ago has never been done. Today I am going to practice it. Street Bully
For n
Ask how many roles can be selected at least (each role can only be selected once), so that everyone else can be Ko (including all versions ).
Typical DLX. The first column 'sigma mode [I] 'indicates that it is overwritten by the KO's version. The last n columns indicate the selected persons, which are precisely overwritten.
That is, if accurate
This is the answer to the DLX question.
This question is transformed into a precise coverage model. At the beginning, we simply need to cover the rows and slashes, WA.
Later, I realized that this is not the case. I only need to overwrite all rows or columns. However, some details cannot be taken into consideration.
Note that
for(int i=R[c];i;i=R[i]){ if(i>ne) break; if(S[i]
The minimum value can only be found before Ne. Why? Because we need to comple
10020-minimal coverage
Time limit:3.000 seconds
Http://uva.onlinejudge.org/index.php?option=com_onlinejudgeItemid=8category=113page=show_ problemproblem=961
The Problem
Given several segments of line (int, X axis) with coordinates [LI,RI]. You are are to choose the minimal amount of them, such they would completely the cover the segment [0,m].
The Input
The the number of test cases, followed by a blank line.
Each test case in the input should c
need to achieve this. If it is impossible to make one complete map, just output-1.
Sample Input
35 5 10 0 5 55 5 20 0 3 52 0 5 530 30 50 0 30 100 10 30 200 20 30 300 0 15 3015 0 30 30
Sample output
1-12
Hint
For sample 1, the only piece is a complete map.
For sample 2, the two pieces may overlap with each other, so you can not make a complete treasure map.
For sample 3, you can make a map by either use the first 3 pieces or the last 2 pieces, and the latter approach one needs less pieces.
Autho
DAG path vertex, and each end vertex exactly corresponds to a path in the DAG, the binary graph to find the maximum match m, is to find the corresponding DAG in the maximum number of non-path end vertices, So the number of vertices in the Dag-| M| is the minimum number of end vertices in the DAG, which is the minimum path coverage for the DAG. That is, the minimum path that is found in the overlay collection is 2, 1->3->4."Minimum Edge overlay"Edge O
related information
: You can see that there are-coverage-html–coverage-clover–coverage-source three options that are available only after the XDebug installation is successful. These three are important options for exporting coverage files.
mbstring needs to be above EXIF. "After you finish installing pear, you can execute pear, see the command parameters of pear,
Then execute sequentially:
Pear Channel-discover pear.phpunit.de
Pear install–alldeps Phpunit/phpunit
It should be noted that the latest version of the PHPUnit is 3.5 But this only pear version is more than 1.6 and php5.2.x will be installed to get the latest version of the installation is otherwise installed is the first version (but does not affect th
5. Conditional combination path coverage: By designing enough use cases, all possible combinations of condition results in each decision appear at least once when these test cases are run. Example:
Test Cases
Input
Expected output
Path
TC8
X = 4 Y = 2 z = 0
3
Sacbed (red)
Tc9
X = 1 y = 2 z = 1
2
Sabed (blue)
Tc10
X = 2 y = 1 Z = 0
3
Sabed (brown)
P1034 rectangular coverage, p1034 rectangular coverageDescription
There are n points (n
These vertices can be completely covered by k rectangles (1 Input/Output Format
Input Format:
N k xl y1 x2 y2 ......
Xn yn (0
Output Format:
Output to the screen. Format:
An integer, that is, the sum of the minimum rectangular area that meets the conditions.
Input and Output sample input sample #1:
4 21 12 23 60 7Output example #
It is represented by dp [I]
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