AcherLX的专栏

DescriptionCalculate A-BInputTwo decimal integers a and b(-10^100 < a,b < 10^100) in one line, separated by one space.OutputOutput a-b in one line.Sample Input1 2Sample Out

Description将一个８*８的棋盘进行如下分割：将原棋盘割下一块矩形棋盘并使剩下部分也是矩形，再将剩下的部分继续如此分割，这样割了(n-1)次后，连同最后剩下的矩形棋盘共有n块矩形棋盘。(每次切割都只能沿着棋盘格子的边进行)原棋盘上每一格有一个分值，一块矩形棋盘的总分为其所含各格分值之和。现在需要把棋盘按上述规则分割成n块矩形棋盘，并使各矩形棋盘总分的

DescriptionYouare to write a program that has to decide whether a given linesegment intersects a given rectangle. An example: line:start point: (4,9) end point: (11,2) rectangl

Description在一张卡片上面，有N+1个正整数，最后一个数是M，而前N个数都不超过M，设为a1,a2, a3, …, aN， 问是否存在整数x1,x2, x3, …, xN, x(N+1),满足x1*a1 + x2*a2 +...+ xN*aN +x(N+1)*M　=　１。当确定N和M后，显然一共有M^N张不同的卡片。现在的问题是，在这所有的卡片中，

DescriptionThereis N pairs of balls in a small box. That means the number for eachpair is the same. However, for some reason, a ball is lost. Now, youwill get the number of the rest. Can

DescriptionYou are given N positive integers, denoted as x1, x2 ... xN. Then give you some intervals [l, r]. For each interval, you need to find a number x to make |x-xl| + |x-x2| + … + |x

B ·Nim-B* SumNIM is an ambigram . The game of NIM is played with any number of piles of objects with any number of objects in each pile. At each turn, a player takes one or more (up to all) object

C ·Non-Decreasing DigitsA number is said to be made up of non-decreasing digits if all the digits to the left of any digit is less than or equal to that digit. For example, the four-digit number 1

A power network consists of nodes (power stations, consumers and dispatchers) connected by power transport lines. A node u may be supplied with an amount s(u)³0 of power, may produce an amount 0£p(u)£

算法分析部分转自该博客：点击打开链接与Ford-Fulkerson方法不同，压入和重标记算法不是检查整个残留网络来找出增广路径，而是每次仅对一个顶点进行操作，并且仅检查残留网络中该顶点的相邻顶点。压入和重标记算法引入了一个新的概念叫做余流，余流的定义为e(u)=f(V,u)。我们知道，在流网络满足三个限制条件的情况下有e(u)=0，但是在该算法的执行过程中，并不能保证流守恒，但

DescriptionBig Johnsson Trucks Inc. is a company specialized in manufacturing big trucks. Their latest model, the Godzilla V12, is so big that the amount of cargo you can transport with it is neve

DescriptionYou are the lead programmer for the Securitron 9042, the latest and greatest in home security software from Jellern Inc. (Motto: We secure your stuff so YOU can't even get to it). T

DescriptionFlip game is played on a rectangular 4x4 field with two-sided pieces placed on each of its 16 squares. One side of each piece is white and the other one is black and each piece is lying e

DescriptionGiven a set of n integers: A={a1, a2,..., an}, we define a function d(A) as below:d(A)=sum{a[s1]~a[t1]}+sum{a[s2]~a[t2]}The rule is 1Your task is to calculate d(A).InputThe in

DescriptionCalculate a+bInputTwo integer a,b (0OutputOutput a+bSample Input1 1Sample Output2package OJ;import java.util.*;public class P1 { /** * @param

DescriptionFarmer John wants to repair a small length of the fence around the pasture. He measures the fence and finds that he needs N  (1 ≤ N ≤ 1,000)) planks of wood, each having some integer le

Problem DescriptionGiven a positive integer N, you should output the most right digit of N^N. InputThe input contains several test cases. The first line of the input is a single integer T which

Description There are n cells in a sequence. You can use three kinds of colors, red , pink , green to paint these cells , one cell with only one kind of color . Promising that any two adjacent cel

Description We all know that , when there are n positive integers (namely 1…n) , we can use these n integers to construct n! kinds of permutations . Sort these permutations in lexicographic order

DescriptionLet’sconsiderK-basednumbers, containing exactly Ndigits. We define a number to be valid if its K-basednotation doesn’t contain two successive zeros. For example: 10102

DescriptionWindy hasNballs of distinct weights from 1 unit toNunits. Now he tries to label them with 1 toNin such a way that:No two balls sharethe same label.The labeli

A friend of yours has taken the job of security officer at the Star-Buy Company, a famous department store. One of his tasks is to install a video surveillance system to guarantee the security of the