coding matrix

http://acm.hdu.edu.cn/showproblem.php?pid=5015 Because it was a two-dimensional recursive type, it was not possible to construct a matrix like this. From the column, the current column is recursively given by the previous column. The matrix is constructed according to this point. B[i] stands for column I, is a (n+2) * * Matrix, that is, b[1] = [1,233 ...], the r

// Starting from the beginning. // Network stream solution. If the maximum stream is the sum of all elements, the solution is available. The residual network is used to determine whether it is unique. // There are two methods, the first is to perform a deep search to check whether a ring with positive Edge Weight exists. For details, see the ring consisting of 4888 // at least three points in the previous article. The second is to use matrix DP, only

When using the Monte Carlo Method for semi-sphere sampling, the following problem occurs: The half sphere of the generated sampling vector group is located in the corresponding direction of the Y axis (or other axes, however, in use, we may need to transform it based on the normal vector, so we have this problem: Given two vectorsV0AndV1Calculate a rotating MatrixRGet: R V0 = V1 This problem is actually quite simple, you can directly use the dot product of two vectors and the cross multiplicat

MyMathLib series (vector and matrix-preparations) and mymathlib Matrix Because the computing workload of vectors and matrices is relatively large, several definition classes are added here for better code writing. These definitions or extension methods will be applied in future code:1. Public Enumeration type /* File: PublicEnums. cs * objective: to define a public Enumeration type. */using System; using Sy

　　　　　　　　　　　　　　　　　　　　　　　　　　Matrix Power Series1#include 2#include 3#include 4#include 5#include 6#include string>7#include 8#include Set>9#include Ten#include One#include A#include -#include - using namespacestd; thetypedefLong LongLL; - Const intinf=0x4fffffff; - Const Doubleexp=1e-5; - Const intms= to; + Const intSize= +; - + intN,k,mod; Atypedef vectorint> >Mat; at - Mat A; - //Calc A*b - -Mat Mul (Mat a,mat B) - { inMat C (A.size (),vector

POJ 3233 Matrix Power Series Matrix Rapid Power + binary summation, poj3233 Matrix fast power, please refer to template http://www.cnblogs.com/pach/p/5978475.html If sum = A + A2 + a3... + Ak is directly accumulated, it will definitely time out, Sum = A + A2 +... + Ak/2 + A (k/2) * (A + A2 +... + Ak/2) When k is an even number; Sum = A + A2 +... + A (k-1)/2 + A (

Python implements matrix multiplication and python Matrix Multiplication This article describes how to implement matrix multiplication in python. Share it with you for your reference. The specific implementation method is as follows: def matrixMul(A, B): res = [[0] * len(B[0]) for i in range(len(A))] for i in range(len(A)): for j in range(len(B[0])): fo

"Idea": note that the power of 0 is the unit matrix."AC Code":#include Blue Bridge Cup BASIC 27 matrix multiplication (matrix, two-dimensional array)

God thought, for the first time saw this operation ... The constructs a matrix to transfer state. A+b∗c A+b*c, we note that the 3-tuple (s,m,t) (s,m,t) represents the current state, where S=a,m=b,t=b∗c s=a,\ the m=b,\. Such records, each more than one character, the transfer can be represented as multiplying the previous matrix. Number k K: (s,m,t) → (s,m,t∗10+m∗k) (s,m,t) \to (s,m,t*10+m*k) + +: (s,m,

Learn the basic algorithms of matrices todayGaussian elimination is a powerful tool for solving linear equations.The basic idea is to transform the augmented matrix into a simplified ladder-shaped matrix by passing the elementary changes.The following is the column main element Gaussian elimination method, the complexity of O (n^3).It is easy to derive the determinant and rank algorithm according to the Gau

Matrix swapping IITime limit:9000/3000 MS (java/others) Memory limit:32768/32768 K (java/others)Total Submission (s): 1210 Accepted Submission (s): 804 Problem Descriptiongiven an N * M matrix with each entry equal to 0 or 1. We can find some rectangles in the matrix whose entries is all 1, and we define the maximum area of such rectangle as thi S

Http://blog.renren.com/share/236761508/14152672566 When I am bored on campus, I feel good to share with you. I didn't know much about this, but I still don't know much about it. I will leave the text here for details. Problem Source: http://stackoverflow.com/questions/11413855/why-is-transposing-a-matrix-of-512x512-much-slower-than-transposing-a-matrix-of The cause of the incident is as follows: #defineSAM

HDU2256-Problem of Precision (matrix construction + Rapid power), power zero matrix Question Link Question: sqrt (2) + sqrt (3) ^ 2n MOD 1024 Ideas: Code: #include Pascal's rapid power matrix multiplication, detailed explanation and implementation Write a framework for you. The quick power is binary recursion.Function quick (var x: array [1 .. 2, 1 .. 2] of

HPU 2686 -- Matrix [maximum cost flow Classic Graph creation], hpu2686 -- matrix Matrix Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission (s): 2062 Accepted Submission (s): 1074 Problem DescriptionYifenfei very like play a number game in the n * n Matrix. A positive inte

FZU 1692 Key problem (Construction matrix + rapid matrix power) [Question]: 1. The question refers to a circle of n people. Each person initially has an ai apple and is now playing m games, after each game, I personally can add R * A (I + N-1) % n + L * A (I + 1) % n Apples (wrong question ), q: The number of apples for each person after the m-round game [Idea ]: According to the question, we can list the

Hdu 4920 Matrix multiplication (Matrix multiplication): 5th multi-school training sessions, hdumultiplicationMatrix multiplicationTime Limit: 4000/2000 MS (Java/Others) Memory Limit: 131072/131072 K (Java/Others)Problem DescriptionGiven two matrices A and B of size n × n, find the product of them.Bobo hates big integers. So you are only asked to find the result modulo 3.InputThe input consists of several te

HDU 4920 Matrix multiplication (Matrix multiplication), hdumultiplication Various TEL, 233 ah. I didn't expect it would be enough to deal with 0. I always thought there would be extreme data. I did not expect this. I saw an amazing AC code on the Internet. The classic matrix multiplication only enumerated the innermost layer, it's time to move outside, and it's a