# squares on checkerboard

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### "BZOJ1057" "ZJOI2007" checkerboard making up to 01 sub-matrices/squares

Reprint Please specify the source Thank you: http://blog.csdn.net/vmurder/article/details/42886393ExercisesWell, this picture is really not very good to do,But we can convert it to perfection is a 1/0 sub-matrix problem.is to reverse the point 01 of the same row parity, and then it's OK (this is obviously, need to prove the message).And then we're asking for the maximum sub-matrix.As for the square? To seek the sub-matrix by the way, that is the ans1,This is obviously because we enumerate the du

### PHP Print output Checkerboard implementation method, PHP print output checkerboard _php tutorial

of the Board-for Loop To implement the chessboard first we think about what the chessboard is, there are a lot of squares, and then the black and white squares, first we draw the squares, the code is as follows:Copy the Code code as follows: echo " "; for (\$i =1; \$i "; for (\$j =1; \$j 54im"; } echo " "; } echo " "; ?> See the above board,

### Checkerboard Coverage (recursive divide-and-conquer problem)

In a checkerboard consisting of a 2^k * 2^k, there is a square that is different from the other, and how to cover the other squares of this particular square, using the following four kinds of L-shaped dominoes.Four L-type dominoes such as 1Figure 1Special squares in the chessboard 2Figure 2The basic principle of the implementation is to divide the chessboard of

### "POJ 1191" Checkerboard Split (DP)

"POJ 1191" Checkerboard Split (DP) Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 13811 Accepted: 4917 DescriptionA 8*8 board is split as follows: The original board is cut down a rectangular checkerboard and the rest is also a rectangle, and then the remainder continues to be so segmented, so that after cutting (n-1), together with

### Checkerboard Segmentation (Memory Search)

Checkerboard SegmentationTime limit:2000/1000 MS (java/others) Memory limit:32768/32768 K (java/others) total submission (s): 501 Accepted s Ubmission (s): 248Problem description A 8*8 board with the following segmentation: Cut the original checkerboard down a rectangular checkerboard and make the rest of the rectangle, and then continue to split the remainder so

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### poj1191--Checkerboard Segmentation

Checkerboard Segmentation Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 12456 Accepted: 4389 DescriptionA 8*8 board is split as follows: The original board is cut down a rectangular checkerboard and the rest is also a rectangle, and then the remainder continues to be so segmented, so that after cutting (n-1), together with the last

### BZOJ1057[ZJOI2007] Checkerboard production [monotone stack]

Title DescriptionChess is one of the oldest game games in the world, with Chinese Weiqi, chess and Japanese chess. It is said that chess originated from the thought of the I Ching, the chessboard is a 8*8 size of black and white square, corresponding to 8,864 gua, black and white corresponding yin and yang.And our protagonist, the little Q, is a chess enthusiast. As a top-notch player, he was not content with the usual chessboard and rules, so he and his good friend, Little W, decided to expand

### "ZJOI2007" Checkerboard making BZOJ1057

DescriptionChess is one of the oldest game games in the world, with Chinese Weiqi, chess and Japanese chess. It is said that chess originated from the thought of the I Ching, the chessboard is a 8*8 size of black and white square, corresponding to 8,864 gua, black and white corresponding yin and yang. And our protagonist, the little Q, is a chess enthusiast. As a top-notch player, he was not content with the usual chessboard and rules, so he and his good friend, Little W, decided to expand the c

### Codevs 1049 Checkerboard Staining

Title Description DescriptionThere is a 5x5 chessboard with some of the squares dyed black and the other squares white, and your task is to dye the board with a few squares so that all black squares can be connected together and you have the fewest number of squares to stai

### Medium POJ 1191 Checkerboard Split, DP.

DescriptionA 8*8 board is split as follows: The original board is cut down a rectangular checkerboard and the rest is also a rectangle, and then the remainder continues to be so segmented, so that after cutting (n-1), together with the last remaining rectangular checkerboard there is a total of N-block rectangular chessboard. (Each cut can only be performed along the edge of the

### Bzoj 1057: [ZJOI2007] Checkerboard Production (DP + suspension method)

size of black and white square, corresponding to 8,864 gua, black and white corresponding yin and yang. And our protagonist, the little Q, is a chess enthusiast. As a top-notch player, he was not content with the usual chessboard and rules, so he and his good friend, Little W, decided to expand the chessboard to fit their new rules. Little Q found a rectangular piece of paper made up of squares of n*m, each of which was painted with one of the two co

### Classic case of divide and conquer algorithm-checkerboard problem

2017-08-26 20:18:50Writer:pprpThe question probably describes:Have a 2k? 2k checkers, just one square is black, the other is white. Your task is to cover all white squares with an L-shaped card containing 3 squares.Black squares cannot be overwritten, and any white squares cannot be overwritten by two or more cards at the same time.Divide and conquer the s

### "Recursive" checkerboard Overlay

Problem Description:In a checkerboard of 2^k*2^k squares, there is a grid that differs from other squares, called special squares.Now invite 4 different L-shaped dominoes to cover all squares of a given chessboard except for special parties.For example: This is a k=2 when the board, the special point coordinates (0,1).

### "Checkerboard Overlay" (simple)--divide and conquer algorithm

Algorithm Experiment 1: Board coverage time limit:1 Sec Memory limit:64 MB submit:2798 solved:702 [submit][status][discuss] DescriptionIn a chessboard of 2k x 2k Squares, a square is different from the other squares, which is called a special square and is called a special chessboard. In the problem of board coverage, the 4 different forms of the L-shaped dominoes are used to cover all

### Recursive, memory Search, (checkerboard segmentation)

Topic Link http://poj.org/problem?id=1191problem: 1191User: yinjianMemory: 568K time: 16MSLanguage: C + + Result: AcceptedProblem Solving Report:1, the formula can be used to simplify the mathematical method, is to find the number (sum) of the sum of the squares and the smallest.2, each division has four kinds of cases (recursion).3, each time the location of the division to be compared, so as to find the best.#include #include#include#includestring.

### The realization of C language by recursive + backtracking method of horse stepping checkerboard algorithm

R is the row of the Matrix, and C is the column of the matrixOutput the results to the results.txt in the current directory (need to be built in advance).The results are given: 1. The existence of a path allows the horse to travel all squares as required;2. Total number of solutions;3. Time of execution of the program;#include #include#include#defineR2#defineC 4intflag[r][c]={0};//a two-dimensional array that holds the horse jumping path intarr[r][

### An algorithm for extracting corner points of checkerboard Calibration board (from the Camera calibration section of the Open source algorithm Ptamm)

In the field of machine vision, camera calibration is a very basic task. At present, our frequently used calibration tools are OPENCV and MATLAB. OpenCV's Checkerboard Corner extraction API requires us to specify the horizontal points of the checkerboard in order to extract the corner points. Its main process is to take the picture two value, morphological processing, to find a number of four-sided, to eac

### "Checkerboard DP" "OpenJudge7614" minimum tolls

Minimum toll total time limit: 1000ms memory limit: 65536kB "description"A businessman walks through a n*n square grid to attend a very important business event. He's going to go from the top left corner of the grid and out the bottom right corner. It takes 1 units of time to cross 1 squares in the middle of each one. The businessman must cross out at (2n-1) a unit time. And in the middle of every small box, you need to pay a certain fee.The businessm

### Bzoj 1057 Zjoi 2007 checkerboard Production dp+ Hanging line method

Title: Give a matrix formed by 01, ask the matrix of the largest area of the square and the rectangle, any one of the squares adjacent to a different lattice.Idea: In fact, all (i + j) 1 in the position of the number XOR, it becomes all 0 or 1 of the largest squares and rectangles. The first question is water DP, the second question can be monotonic stack or hanging line. are very well written.CODE:#include

### Poj2002--squares (n points to find the number of squares)

Squares Time Limit: 3500MS Memory Limit: 65536K Total Submissions: 16615 Accepted: 6320 DescriptionA square is a 4-sided polygon whose sides has equal length and adjacent sides form 90-degree angles. It is also a polygon such the degrees gives the same polygon of It centre by. It isn't the only polygon with the latter property, however, as a regular octagon also have this property.So

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