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原创 scrapy爬虫框架

scrapy架构图引擎（Engine）引擎负责控制数据流在系统中所有组件中流动,并在相应动作发生时触发事件.调度器(Scheduler)调度器从引擎接受request并将他们入队,以便之后引擎请求他们时提供给引擎.下载器下载器负责获取页面数据并提供给引擎,而后提供给spider.spiderSpider是Scrapy用户编写用于分析res...

2019-11-07 00:13:01 191

原创 MySQL学习笔记

配置文件：sudo vi /etc/mysql/mysql.conf.d/mysqld.cnf登入命令：mysql -uroot -p创建（删除）数据库：create（drop） database ***转换到数据库：use databasename;创建表： create table tablename（ r1name datatype (若要不为空写 not n...

2017-09-27 14:43:40 273

这次的省赛打的可谓是惊险，幸亏靠着手速才以银牌区最后一名的成绩水到银牌。先从热身赛开始说吧，B C 两题都很水，我基本是没参与队友便把这俩给切了，A题我看了之后想了一会认为是一个记忆化搜索，等队友把B C 切完之后我就开始搞A，很快就敲完了，测了几组数据之后没有问题，然后自信满满的交了一发，然后给我返回了一个RE，查了下代码之后以为可能是输入有非法数据导致数组访问越界，加了个特判之后又交了一发，结

2017-05-09 17:45:50 511

原创 PAT L3-002. 堆栈

L3-002. 堆栈时间限制200 ms内存限制65536 kB代码长度限制8000 B判题程序Standard作者陈越大家都知道“堆栈”是一种“先进后出”的线性结构，基本操作有“入栈”（将新元素插入栈顶）和“出栈”（将栈顶元素的值返回并从堆栈中将其删

2017-03-14 21:48:17 1086

原创 cf 777c Alyona and Spreadsheet

C. Alyona and Spreadsheettime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputDuring the lesson small girl Alyon

2017-02-24 20:17:15 626

原创 UVALive-6955

#include#include#include#include#include#includeusing namespace std;typedef unsigned long long int ll;pairA[112345];bool is(int x,int y,int z){ ll x1=(A[x].first-A[y].first); ll x2

2017-02-23 17:40:30 354

原创 UVALive - 6952

题目链接：https://icpcarchive.ecs.baylor.edu/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=4964题意：给你n个数字，可以将某几个连续的数字的和四舍五入，然后问你最多把这些数字分成d个字段之后他们的和能够最小。思路：一个dp题，dp【i】【j】表

2017-02-22 14:26:41 311

原创 UVALive - 6590

题目链接：https://icpcarchive.ecs.baylor.edu/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=4601题意：给你一些只有2个长度的字符串，让你尽量打印出一个大的m*m的矩阵，矩阵中横竖都不包括给出的字符串，最大20。思路：对建立的图求出他的补图，如果补

2017-02-21 21:42:19 459

原创 UVA 6585

题目链接： https://icpcarchive.ecs.baylor.edu/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=4596根本就没玩过这游戏加上英语渣渣，光是理解题意就理解了半天，题意理解了就很好做了，简单的枚举每一个点然后对每一个为白棋的点进行dfs，计算从每个点开始最多能够吃掉

2017-02-20 19:25:28 346

原创 POJ 2948 Martian Mining

Martian MiningTime Limit: 5000MS Memory Limit: 65536KTotal Submissions: 2612 Accepted: 1625DescriptionThe NASA Space Center, Houston, is less than 200 miles from Sa

2017-02-15 20:45:57 341

原创 POJ 2635 The Embarrassed Cryptographer

The Embarrassed CryptographerTime Limit: 2000MS Memory Limit: 65536KTotal Submissions: 14158 Accepted: 3872DescriptionThe young and very promising cryptographer Odd

2016-08-24 21:28:03 238

原创 POJ 1265 Area

AreaTime Limit: 1000MS Memory Limit: 10000KTotal Submissions: 6317 Accepted: 2770DescriptionBeing well known for its highly innovative products, Merck would definit

2016-08-24 21:14:39 248

原创 POJ 1159 Palindrome

PalindromeTime Limit: 3000MS Memory Limit: 65536KTotal Submissions: 60328 Accepted: 21010DescriptionA palindrome(回文) is a symmetrical(匀称的) string, that is, a stri

2016-08-16 21:49:32 224

原创 POJ 1260 Pearls

PearlsTime Limit: 1000MS Memory Limit: 10000KTotal Submissions: 8699 Accepted: 4351DescriptionIn Pearlania everybody is fond of pearls. One company, called The Roya

2016-08-16 21:45:45 242

原创 POJ 1836 Alignment

AlignmentTime Limit: 1000MS Memory Limit: 30000KTotal Submissions: 15867 Accepted: 5177DescriptionIn the army, a platoon(排) is composed(构成) by n soldiers. During

2016-08-16 21:36:23 197

原创 POJ 1276 Cash Machine

Cash MachineTime Limit: 1000MS Memory Limit: 10000KTotal Submissions: 32571 Accepted: 11789DescriptionA Bank plans to install(安装) a machine for cash withdrawal(撤退).

2016-08-16 21:29:31 246

原创 POJ 1837Balance

BalanceTime Limit: 1000MS Memory Limit: 30000KTotal Submissions: 13341 Accepted: 8352DescriptionGigel has a strange "balance" and he wants to poise(平衡) it. Actually

2016-08-16 21:22:40 233

原创 POJ 2251 Dungeon Master

Dungeon MasterTime Limit: 1000MS Memory Limit: 65536KTotal Submissions: 26176 Accepted: 10198DescriptionYou are trapped in a 3D dungeon(地牢) and need to find the qui

2016-08-10 21:35:25 276

原创 POJ 1321 棋盘问题

棋盘问题Time Limit: 1000MS Memory Limit: 10000KTotal Submissions: 35179 Accepted: 17342Description在一个给定形状的棋盘（形状可能是不规则的）上面摆放棋子，棋子没有区别。要求摆放时任意的两个棋子不能放在棋盘中的同一行或者同一列，请编程求解对

2016-08-10 21:34:03 186

原创 POJ 2488 A Knight's Journey

A Knight's JourneyTime Limit: 1000MS Memory Limit: 65536KTotal Submissions: 40609 Accepted: 13800DescriptionBackgroundThe knight(骑士) is getting bored of seeing

2016-08-09 21:41:23 195

原创 POJ 2513 Colored Sticks

Colored SticksTime Limit: 5000MS Memory Limit: 128000KTotal Submissions: 35039 Accepted: 9155DescriptionYou are given a bunch(群) of wooden sticks. Each endpoint(端

2016-08-09 21:38:11 187

原创 POJ 1442 Black Box

Black BoxTime Limit: 1000MS Memory Limit: 10000KTotal Submissions: 10302 Accepted: 4237DescriptionOur Black Box represents a primitive(原始的) database. It can save

2016-08-09 21:26:20 220

原创 POJ 3349

Time Limit: 4000MS Memory Limit: 65536KTotal Submissions: 38027 Accepted: 9963DescriptionYou may have heard that no two snowflakes(雪花) are alike. Your task is to write a pr

2016-08-08 21:08:09 305

原创 POJ 3274 Gold Balanced Lineup

Gold Balanced LineupTime Limit: 2000MS Memory Limit: 65536KTotal Submissions: 14378 Accepted: 4165DescriptionFarmer John's N cows (1 ≤ N ≤ 100,000) share many sim

2016-08-08 20:57:45 327

转载 POJ 2151 Check the difficulty of problems

Time Limit: 2000MS Memory Limit: 65536KTotal Submissions: 6653 Accepted: 2889DescriptionOrganizing a programming contest(竞赛) is not an easy job. To avoid making the problem

2016-08-08 20:39:34 191

原创 POJ 1840

EqsTime Limit: 5000MS Memory Limit: 65536KTotal Submissions: 15281 Accepted: 7499DescriptionConsider equations(方程式) having the following form:a1x13+ a2x23+ a3x33+

2016-08-08 20:30:14 269

原创 POJ 2002 Squares

SquaresTime Limit: 3500MS Memory Limit: 65536KTotal Submissions: 18718 Accepted: 7209DescriptionA square is a 4-sided polygon(多边形) whose sides have equal length and

2016-08-08 20:15:28 252

原创 POJ 2503 Babelfish

BabelfishTime Limit: 3000MS Memory Limit: 65536KTotal Submissions: 40265 Accepted: 17159DescriptionYou have just moved from Waterloo to a big city. The people here

2016-08-08 20:06:44 314

原创 POJ 3020 Antenna Placement

Antenna PlacementTime Limit: 1000MS Memory Limit: 65536KTotal Submissions: 8613 Accepted: 4266DescriptionThe Global Aerial Research Centre has been allotted the tas

2016-08-03 21:56:29 321

原创 POJ 3041 Asteroids

AsteroidsTime Limit: 1000MS Memory Limit: 65536KTotal Submissions: 20181 Accepted: 10952DescriptionBessie wants to navigate her spaceship through a dangerous astero

2016-08-03 21:52:32 209

原创 POJ 1094 Sorting It All Out

Sorting It All OutTime Limit: 1000MS Memory Limit: 10000KTotal Submissions: 32802 Accepted: 11395DescriptionAn ascending sorted sequence of distinct values is one i

2016-08-03 21:48:53 218

转载 POJ 3267 The Cow Lexicon

The Cow LexiconTime Limit: 2000MS Memory Limit: 65536KTotal Submissions: 9766 Accepted: 4682DescriptionFew know that the cows have their own dictionary with W (1

2016-08-03 21:42:42 225

原创 POJ 3687 Labeling Balls

Labeling BallsTime Limit: 1000MS Memory Limit: 65536KTotal Submissions: 13433 Accepted: 3879DescriptionWindy has N balls of distinct weights from 1 unit to N un

2016-08-03 21:36:19 265

原创 POJ 1258 Agri-Net

Agri-NetTime Limit: 1000MS Memory Limit: 10000KTotal Submissions: 51702 Accepted: 21565DescriptionFarmer John has been elected mayor of his town! One of his campaig

2016-08-03 21:29:39 225

原创 POJ 2485 Highways

HighwaysTime Limit: 1000MS Memory Limit: 65536KTotal Submissions: 28412 Accepted: 12948DescriptionThe island nation of Flatopia is perfectly flat. Unfortunately, Fl

2016-08-03 21:21:14 222

原创 POJ 1789 Truck History

Truck HistoryTime Limit: 2000MS Memory Limit: 65536KTotal Submissions: 24786 Accepted: 9666DescriptionAdvanced Cargo Movement, Ltd. uses trucks of different types.

2016-08-03 21:14:55 229

原创 POJ 2240 Arbitrage

ArbitrageTime Limit: 1000MS Memory Limit: 65536KTotal Submissions: 20575 Accepted: 8768DescriptionArbitrage is the use of discrepancies in currency exchange rates t

2016-08-03 21:06:40 251

原创 POJ 1125 Stockbroker Grapevine

Stockbroker GrapevineTime Limit: 1000MS Memory Limit: 10000KTotal Submissions: 33884 Accepted: 18726DescriptionStockbrokers are known to overreact to rumours. You h

2016-08-03 20:57:49 226

原创 POJ 3026 Borg Maze

Borg MazeTime Limit: 1000MS Memory Limit: 65536KTotal Submissions: 12536 Accepted: 4107DescriptionThe Borg is an immensely powerful race of enhanced humanoids from

2016-07-29 14:59:17 262

原创 POJ 2442 优先队列

SequenceTime Limit: 6000MS Memory Limit: 65536KTotal Submissions: 8859 Accepted: 2938DescriptionGiven m sequences, each contains n non-negative integer. Now we ma

2016-07-28 12:32:36 267

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