nealgavin的专栏

Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 2000    Accepted Submission(s): 1423Problem Description假设有x1个字母A， x2个字母B,..... x26个字母Z

Time Limit: 1000MS Memory Limit: 10000KTotal Submissions: 19122 Accepted: 6659DescriptionA Bank plans to install a machine for cash withdrawal. The machine is able to deliver

To The MaxTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 4437    Accepted Submission(s): 2099Problem DescriptionGiven a two-dimensi

Number TrianglesConsider the number triangle shown below. Write a program that calculates the highest sum of numbers that can be passed on a route that starts at the top and ends somewhere on the base

素数价值Time Limit 3000msMemory Limit 65536Kdescription我们来定义下一个数的素数价值,假设这个数是N(2<=N<=50000),我们可以通过以下两种方法:1.把当前数字除以某个素数(当然得可以整除),即N = N / p;2.把当前数

Preface NumberingA certain book's prefaces are numbered in upper case Roman numerals. Traditional Roman numeral values use a single letter to represent a certain subset of decimal numbers. Here is

Subset SumsJRM For many sets of consecutive integers from 1 through N (1 For example, if N=3, one can partition the set {1, 2, 3} in one way so that the sums of both subsets are identical: {3} and {

Longest PrefixIOI'96 The structure of some biological objects is represented by the sequence of their constituents, where each part is denote by an uppercase letter. Biologists are interested in

Money SystemsThe cows have not only created their own government but they have chosen to create their own money system. In their own rebellious way, they are curious about values of coinage. Tradi

Score InflationThe more points students score in our contests, the happier we here at the USACO are. We try to design our contests so that people can score as many points as possible, and would li

Humble NumbersFor a given set of K prime numbers S = {p1, p2, ..., pK}, consider the set of all numbers whose prime factors are a subset of S. This set contains, for example, p1, p1p2, p1p1, a

StampsGiven a set of N stamp values (e.g., {1 cent, 3 cents}) and an upper limit K to the number of stamps that can fit on an envelope, calculate the largest unbroken list of postages from 1 cent

FactorialsThe factorial of an integer N, written N!, is the product of all the integers from 1 through N inclusive. The factorial quickly becomes very large: 13! is too large to store in a 32-bit

Shopping OffersIOI'95 In a certain shop, each kind of product has an integer price. For example, the price of a flower is 2 zorkmids (z) and the price of a vase is 5z. In order to attract more cus

Starship TroopersTime Limit: 10000/5000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 6276    Accepted Submission(s): 1692Problem DescriptionYou, the le

H. Queries for Number of Palindromestime limit per test5 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputYou've got a string s = s1s2...

A GameIOI'96 - Day 1 Consider the following two-player game played with a sequence of N positive integers (2 <= N <= 100) laid onto a game board. Player 1 starts the game. The players move alterna

DividingTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 10438    Accepted Submission(s): 2918Problem DescriptionMarsha and Bill ow

Monkey and BananaTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 4637    Accepted Submission(s): 2388Problem DescriptionA group of

最少拦截系统Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 10355    Accepted Submission(s): 4055Problem Description某国为了防御敌国的导弹袭击,发展出一种导

I NEED A OFFER!Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 10672    Accepted Submission(s): 4019Problem DescriptionSpeakless很早

B - Checkout AssistantCrawling in process...Crawling failedTime Limit:2000MS    Memory Limit:262144KB   64bit IO Format:%I64d & %I64uSubmitStatusPracticeCodeForces 19BDescriptionBo

Doing HomeworkTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 3371    Accepted Submission(s): 1308Problem DescriptionIgnatius has ju

Piggy-BankTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 6244    Accepted Submission(s): 3137Problem DescriptionBefore ACM can do

Complete the SequenceTime Limit: 3000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 161    Accepted Submission(s): 93Problem DescriptionYou proba

方格取数(1)Time Limit: 10000/5000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 2585    Accepted Submission(s): 976Problem Description给你一个n*n的格子的棋盘，每个格子里面

Common SubsequenceTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 14714    Accepted Submission(s): 6106Problem DescriptionA subseq

Employment PlanningTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 2597    Accepted Submission(s): 1013Problem DescriptionA projec

Human Gene FunctionsTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 1506    Accepted Submission(s): 840Problem DescriptionIt is we

Fast FoodTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 1403    Accepted Submission(s): 609Problem DescriptionThe fastfood chain

Pascal's Travels Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 1115    Accepted Submission(s): 488Problem DescriptionAn n x n ga

Max Sum Plus Plus PlusTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 838    Accepted Submission(s): 417Problem Description给定一个由n个

Free DIY TourTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 2061    Accepted Submission(s): 664Problem DescriptionWeiwei is a sof

Max Sum Plus PlusTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 11158    Accepted Submission(s): 3673Problem DescriptionNow I thi

C. Sequencetime limit per test1 secondmemory limit per test64 megabytesinputstandard inputoutputstandard outputLittle Petya likes to play very much. And most of all he li

钥匙计数之一Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 1001    Accepted Submission(s): 406Problem Description一把锁匙有N个槽，槽深为1，2，3，4。每锁

PearlsTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 894    Accepted Submission(s): 382Problem DescriptionIn Pearlania everybody

MAX Average ProblemTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 4153    Accepted Submission(s): 1052Problem DescriptionConsider

Super Jumping! Jumping! Jumping!Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 14615    Accepted Submission(s): 6145Problem Descrip

Function Run FunTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 1475    Accepted Submission(s): 752Problem DescriptionWe all love