squares on checkerboard

Programming Question # #: Computes the sum of squares of integersSource: Peking University Online Program evaluation system POJ (Coursera statement: The exercises completed on POJ will not count to the final results of Coursera. )Total time limit: 1000ms memory limit: 1024kBDescribeThe following program reads an integer n each time, and exits if n is 0, otherwise outputs N and N squared.#include InputA k integer. Except for the last data, none of the

In this paper, the theory and proof of least square method and the calculation process are introduced, and the program code of two least squares is given.Octave CodeClear All;close all;% fitted Data set x = [2;6;9;13]; y = [4;8;12;21];% Data lengthN = length (x);% 3Percent Count x mean m_x = SUM (x)/N%%% calculates the average of t m_t = SUM (y)/N%%% calculates the average of t*x m_xt = SUM (y.*x)/N%%% calculates the average of x squared m_xx = SUM (x

"Title description":Magic Board Magic Squares"Ideas":Does it feel like eight-digit?The obvious wide search, the state of the magic Plate as an arrangement, then the state is at most \ (8! = 40320\) species, space is acceptable, for the first few permutations can be implemented with comtop (I want to do eight digital when you are aware of this routine), Then according to the topic of three ways to transfer the state, each state transferred out \ (3\) s

Title: give you a few square side length, square a vertex on the x-axis and then the angle of the x-axis is 45 degrees, each square is close, ask from above to see the number of squares can seeTopic ideas: Line coverage, edge length multiply on 2 to prevent the generation of decimals, to find out each square and x-axis parallel diagonal of the starting x-coordinate, the rest is the line.#include #include#include#include#include#include#include#include

HTTP://CODEVS.CN/PROBLEM/1043/(Topic link)Test instructionsN*n squares, each of which has a number, looks for the number of channels from (N,n) to the two paths that make up the channel and the maximum.SolutionWater problem, ${f[i][j][k][l]}$ said one way to go (I,J), the other road to (K,L), take the largest number.Codecodevs1043#include　　Number of "codevs1043" squares

Magic Squares Time Limit: 2 Seconds Memory Limit: 65536 KB One day, the astronauts from China arrived in a planet that they have never been before. First, they sent a robot called AAA to launch e the environment as usual. However, AAA became confused as soon as it departed from the aerostat: it found that the surface of the planet was divided into blocks we call magic squares, each block is marked

Question: Place squares as shown in the figure. Output the squares from the top to the bottom. Question: 1: because all the line segments have a 45/135-degree angle, all data is larger than SQRT (2) and can be processed as integers. 2: When we use a line segment tree to handle the entire point, we need to pay attention to the following situations because we can only process the entire point. That is, 3rd c

This article mainly introduces the relevant information about how to use javascript to achieve the same sum of values of the nine squares. For more information about how to use javascript to implement the nine squares, see the examples in this article, the details are as follows: Implementation ideas:1. the input value of each grid must be a number; 2. the input values cannot be repeated; 3. the input valu

number of squares /tr> difficulty level: A; run time limit: 1000ms; run space limit: 51200KB; code length limit: 2000000B question Description Piles up a block of identical cube blocks in the corner, as shown in: Because the blocks are so regular, you just have to know it. The number of layers allows you to calculate the quantity of all wood blocks. input

For a conventional linear model, its precise model can be defined as follows:The first part of the model describes the trend of the variation with the self-variable, while the second part describes the error term that the linear model cannot be modeled.The least squares method uses the loss cost and the minimum to obtain the parameters of the linear model. In this paper, we find the model parameter Θ by the assumption of the probability distribution o

Well, after seeing the similar problems, your may has known how to solve this problem. Yeah, just to construct larger numbers from smaller numbers by adding perfect squares to them. This post shares a nice code and is rewritten below.1 classSolution {2 Public:3 intNumsquares (intN) {4vectorint> dp (n +1);5Iota (Dp.begin (), Dp.end (),0);6 intUB =sqrt (n), next;7 for(inti =0; I ) {8 for(intj =1; J ) {9Next = i + J *J;

Topic Links:http://poj.org/problem?id=2002Test instructionsA given n points to determine how many squares this n points can make.Analysis:Violence enumerates the two endpoints of an edge, and then, according to the congruent triangles, can find the endpoints of the other two sides of the square, and then judge that the two two exist.So the first thing to do is to hash all the dots, then the brute force enumeration, so that the four sides are counted o

$n the squares of the \times n$, each lattice has a natural number. One person in the square, can only go right or down. From the upper left to the lower right to walk two times, ask the maximum number of numbers can be obtained (each number is not taken, that is, two times through the same location can only get a value).Consider walking together twice, each line passing through the segment is two segments assumed to be [a, b] and [C, D]. The current

How many squares does a match spell http://matchstickpuzzles.blogspot.com/2011/06/55-4x4-square-how-many-squares.htmlThe input is two-dimensional array ver and hor, if there is a match is 1, not 0.Dphor indicates how many consecutive matches are in the transverse direction, and Dpver indicates how many consecutive matches are in the longitudinal direction.Finally, the top left corner of the first transverse match as the basis to check whether to form

Problem DescriptionOn the beaming day of 60th anniversary of Njust, as a military college which was Second artillery Academy of Harbin Milita Ry Engineering Institute before, queue Phalanx is a special landscape.Here's a m*n rectangle, and this one can be divided to m*n squares which is of the same size. As shown in the figure below:01–02–03–04|| || || ||05–06–07–08|| || || ||09–10–11–12Consequently, we have (m+1) * (n+1) nodes, which is all connected

4-7 statistic a class of complete squares (20 points)The subject requires the implementation of a function that determines whether any given integer N satisfies the condition: it is a total square number, and at least two digits are the same, such as 144, 676, and so on.function Interface Definition:int IsTheNumber ( const int N );These N are the parameters that the user passed in. If the N condition is met, the function must return 1, otherwise 0 is

Base time limit: 1 seconds space limit: 131072 KB Score: 5 Difficulty: 1-level algorithm problem Given an integer n, the n is represented as the sum of squares of 2 integers i J (i A number n (1 Output A total of k rows: 2 numbers per line, I j, indicating n = i^2 + j^2 (0 Input example 130Output example 3 117 9 Simple math problem began without brain violence T got a pitch,Meow meow meow??? Just card me a set of data??? Frighten

First is the topic description:Describe650) this.width=650; "src=" http://media.openjudge.cn/images/2747_1.jpg "style=" Border:0px;vertical-align:middle; " alt= "2747_1.jpg"/>For example, there are 3 squares with an integer a1,a2,a3 inside each square. Known 0InputA row that contains an integer n (0OutputAn integer that is the maximum value of the A1+A2+A3.Sample input 3 Sample output 5 And here's my solution:When I first a

Approximation by a progression Time Limit: 500MS Memory Limit: 65536KB 64bit IO Format: %i64d %i64u Submit StatusDescriptionYour is given a sequence of integersa1,..., an. Find an arithmetic progressionb1,...,Bnfor which the Value∑ (AI?Bi)2is minimal. The elements of the progression can be non-integral.InputThe first line contains the numberNof elements in the sequence (2≤N≤104). The second line given the integersa1,..., an; Their absolute va

1. Polynomial-fitting function:Y= A0 + a1x + a2x^2 + ... + akx^k (where k is fit times)When the k=1 is linear fit, the k=2 is a two-time polynomial ... Three-time polynomial.2. Least squares principle matrix algorithm principle:X*a=yA= ((X ' *x)-1) *x ' *y|-X1 x1^2 ... x1^k| |y0||-X2 x2^2 ... x2^k| |a0| |y1||... | |a1| |. ||... | |. | = |. ||... | |ak| |. ||-Xn xn^2 ... xn^k| |yn|where x is the initial Vandermonde matrix, A