upstream timed out (110: Connection timed out) while reading response header from upstream
原因: 1、nginx缓冲区太小或超时时间太短 2、后端服务器响应慢 解决方案: 1、设置缓冲区大小和超时时长 server { listen 8080; server_name XXX.XXX.com; large_client_header_buffe...
Outlook邮件如何设置靠右的预览窗格/Reading Pane?
View -》 Change View-》Manage Views... Modify... Other Settings... Reading Pane - Right 卒。 ...
mysql链接错误:Lost connection to MySQL server at \'reading authorization packet\', system error: 0
在远程连接mysql的时候,连接不上,出现如下报错:Lost connection to MySQL server at \'reading authorizati...
javax.el.ELException: Error reading [name] on type [com.news.entity.Topic_$$_javassist_1]异常
异常如下:异常分析:从message中可以看出,错误是读取异常,属性是name,路径是com.news.entity.Topic,此错误是使用Hibernate时,由于Hibernate还没有去数据库去检索想要得到的数据而抛出的异常(有时也会是多表关联映射配置异常)。Hibernate为了降低系统的...
Error: Cannot open main configuration file '//start' for reading! 解决办法
当执行service nagios start启动nagios时,报错:Error: Cannot open main configuration file '//start' for reading!此问题是修改了nagios安装源文件导致的报错。如报此问题,请执行如下命令,便可解决:/usr/b
Mysql中use一个表出现警告:Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A
今天使用mysql登录数据库,use一个表的时候出现警告信息,详细如下:后来上网查了一下,出现问题的原因是:进入mysql时,没有使用 -A 参数平时我们习惯使用:mysql -hhostname -uusername -ppassword -Pport使用参数-A:mysql -hhost...
Analysis about different methods for reading and writing file in Java language
referee:Java Programming Tutorial Advanced Input & Output (I/O)JDK 1.4+ introduced the so-called New I/O int java.nio package and its auxiliary pa...
How to: Reading an ini config file from a batch file
Original Link: http://almanachackers.com/blog/2009/12/31/reading-an-ini-config-file-from-a-batch-file/Reference:http://www.computing.net/answers/progr
While reading xxx.png pngcrush caught libpng error: Not a PNG file..
While reading /XXX/XXX/XXX/img1.png pngcrush caught libpng error: Not a PNG filCould not find file: /Users/XXX/Library/Developer/Xcode/DerivedData/C...
csharp: using HtmlAgilityPack and ScrapySharp reading Url find text
https://github.com/exaphaser/ScrapySharphttps://github.com/zzzprojects/html-agility-packhttps://github.com/atifaziz/Fizzlerhttps://archive.codeplex.co...
POJ3320 Jessica's Reading Problem(尺取+map+set)
POJ3320 Jessica's Reading Problemset用来统计所有不重复的知识点的数,map用来维护区间[s,t]上每个知识点出现的次数,此题很好的体现了map的灵活应用#include <iostream>#include <cstdio>#include...
Jessica's Reading Problem POJ - 3320
Jessica's Reading ProblemTime Limit: 1000MS Memory Limit: 65536KTotal Submissions: 17562 Accepted: 6099DescriptionJessica's a very lovely girl wooed b...
poj3061 Subsequence&&poj3320 Jessica's Reading Problem(尺取法)
这两道题都是用的尺取法。尺取法是《挑战程序设计竞赛》里讲的一种常用技巧。就是O(n)的扫一遍数组,扫完了答案也就出来了,这过程中要求问题具有这样的性质:头指针向前走(s++)以后,尾指针(t)要么不动要么也往前走。满足这种特点的就可以考虑尺取法。poj3061 比较简单,也可以用二分做,时间复杂度O...
POJ 3320 Jessica's Reading Problem (尺取法,时间复杂度O(n logn))
题目:解法:定义左索引和右索引1.先让右索引往右移,直到得到所有知识点为止;2.然后让左索引向右移,直到刚刚能够得到所有知识点;3.用右索引减去左索引更新答案,因为这是满足要求的子串。4.不断重复1,2,3。直到搜索到最后,不论怎样都获得不了所有的知识点时跳出。代码:#include <ios...
POJ 3320 Jessica's Reading Problem
Jessica's Reading ProblemTime Limit: 1000MS Memory Limit: 65536KTotal Submissions: 6001 Accepted: 1800DescriptionJessica's a very lovely girl wooed by...
poj 3320 Jessica's Reading Problem(尺取法)
DescriptionJessica's a very lovely girl wooed by lots of boys. Recently she has a problem. The final exam is coming, yet she has spent little time on ...
Greedy:Jessica's Reading Problem(POJ 3320)
Jessica's Reading Problem题目大意:Jessica期末考试临时抱佛脚想读一本书把知识点掌握,但是知识点很多,而且很多都是重复的,她想读最少的连续的页数把知识点全部掌握(知识点都在书上,每一页都是一个知识点)这一题可以用3061的游标卡尺法,我们可以先数数书上倒到底有多少个知识...
POJ 3320 Jessica's Reading Problem (尺取法)
Jessica's a very lovely girl wooed by lots of boys. Recently she has a problem. The final exam is coming, yet she has spent little time on it. If she ...
【POJ 3320】Jessica's Reading Problemc(尺取法)
题题意P个数,求最短的一段包含P个数里所有出现过的数的区间。分析尺取法,边读边记录每个数出现次数num[d[i]],和不同数字个数n个。尺取时,l和r 代表区间两边,每次r++时,d[r]即r的出现次数+1,d[l]即l的出现次数大于1时,左边可以短一点,d[l]--,l++,直到d[l]出现次数为...
POJ 3061 Subsequence 尺取法 POJ 3320 Jessica's Reading Problem map+set+尺取法
SubsequenceTime Limit: 1000MS Memory Limit: 65536KTotal Submissions: 13955 Accepted: 5896DescriptionA sequence of N positive integers (10 < N < ...