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The 2021 ICPC Asia Nanjing Regional Contest (XXII Open Cup, Grand Prix of Nanjing)
Preface 来场我最爱的SUA的题，而且恰逢南京站因此袋鼠题懂得都懂 然而好家伙点开题目一看怎么全是OP题，我们队没一个玩原的这下大输特输了 因此这场前中期可以说是崩完了，一个签到因为没判\(n=1\)从20min挂到150min，除此之外其它题目基本上都要挂上三四发 不过好在最后20min连着 ......
mujoco安装报错：mujoco_py/cymj.pyx:67:5: Exception check on 'c_warning_callback' will always require the GIL to be acquired.
参考： https://blog.csdn.net/weixin_49373427/article/details/131981583 https://blog.csdn.net/CCCDeric/article/details/131788795 安装mujoco报错： 环境： python3.1 ......
select函数的用法和原理
Linux 上的 select 函数 select 函数用于检测在一组 socket 中是否有事件就绪。事件分为以下三类： 读就绪事件 在 socket 内核中，接收缓冲区中的字节数大于或等于低水位标记 SO_RCVLOWAT，此时调用 recv 或 read 函数可以无阻塞地读该文件描述符，并且返 ......
Linux系统奇安信浏览器报错跨域：the resource is in more-private address space 'local'
报错： Access to XMLHttpRequest at "123" from origin "456" has been blocked by CORS policy:the request client is not a secure context and the resource is ......
Transferability of the Chinese Eco-environmental Protection Measure
The United States faces multiple air pollution problems, some of which mainly include:1. Carbon dioxide emissions The United States is one of the larg ......
[951] Understanding the pattern of "(.*?)" in Python's re package
In Python's regular expressions, (.*?) is a capturing group with a non-greedy quantifier. Let's break down the components: ( and ): Parentheses are us ......
Maybatis-Plus 数据库查询 lambdaQuery和mapper中EQ、NE、GT、LT、GE、LE、select、like、in、leftjoin的用法及详解
Maybatis-Plus lambdaQuery和mapper中EQ、NE、GT、LT、GE、LE的用法及详解 实体 当前实体如下，后续代码示例都用该实体； @Data @TableName("user_info") @ApiModel(value = "UserInfo对象", descript ......
The United States adopts China's air pollution control measures
China has accumulated rich experience in air pollution control. When the United States faced a serious air pollution problem, it began to learn from C ......
UVA1396 Most Distant Point from the Sea 题解
Link UVA1396 Most Distant Point from the Sea Question 在大海的中央，有一个凸 \(n\) 边形的小岛，求出岛上离海边最远的一个点到海边的距离 Solution 二分答案，然后去验证是否有一个点，距离海的距离大于 \(mid\) 如何验证？ 把每条 ......
mysql c++ create table,insert,select
CREATE TABLE `t1` ( `id` bigint unsigned NOT NULL AUTO_INCREMENT primary key, `author` varchar(40) NOT NULL DEFAULT '', `comment` varchar(40) NOT NULL ......
SQL DELETE 语句：删除表中记录的语法和示例，以及 SQL SELECT TOP、LIMIT、FETCH FIRST 或 ROWNUM 子句的使用
SQL DELETE 语句 SQL DELETE 语句用于删除表中的现有记录。 DELETE 语法 DELETE FROM 表名 WHERE 条件; 注意：在删除表中的记录时要小心！请注意DELETE语句中的WHERE子句。WHERE子句指定应删除哪些记录。如果省略WHERE子句，将会删除表中的所有 ......
The Redemption of the Moon
ZJOI2022 树 考虑一下容斥，钦定若干个节点满足要么都为叶子，要么只有一遍是叶子，另一边无所谓。 记 \(dp_{i,j,k}\) 表示前 \(i\) 个节点， \(T_1\) 中有 \(j\) 个 \(1\to i-1\) 的节点不是叶子，\(T_2\) 中有 \(k\) 个 \(i+1\t ......
select...for update，表锁？行锁？间隙锁？
大家好呀，我是楼仔。 对于这个问题，我 4 年前就专门研究过，最近看到网上很多相关的文章，要么总结得不全，要么存在很多问题。 感觉有必要自己写一篇，一方面对网上的知识进行纠偏，另一方面也想全面总结一下这块知识，方便大家学习。 这篇文章应该是全网总结最全的，如果有发现比我这篇写得更好，更全，一定要私我 ......
select 对当前选项显示文本的获取 m.options[m.selectedIndex].text | selectz
select 对当前选项显示文本的获取 m.options[m.selectedIndex].text | selectz <html> <head> <title>select</title> </head> <body> <select id="mySelect"> <option value= ......
The Application of River Chief System on Water Pollution in Britain
Water pollution is a global concern that affects the health and well-being of both humans and ecosystems. In Britain, despite efforts to address this ......
Transferability of the Chinese Eco-environmental Protection Measure
London Convention and London ProtocolThe London Convention and London Protocol establish the global rules and standards for preventing, reducing, and ......
MySQL Select 语句执行顺序
一条 SQL 查询语句结构如下： SELECT DISTINCT <select_list> FROM <left_table> <join_type> JOIN <right_table> ON <join_condition> WHERE <where_condition> GROUP BY < ......
poj3017 Cut the Sequence
Cut the Sequence Time Limit: 2000MS Memory Limit: 131072K Total Submissions: 15419 Accepted: 4735 Description Given an integer sequence { an } of leng ......
fsm.h:24:37: fatal error: glib.h: No such file or directory
001、make编译报错如下：fsm.h:24:37: fatal error: glib.h: No such file or directory 002、查找该文件 (base) [root@pc1 exonerate-2.4.0]# find / -name "glib.h" ## 存在该文件 ......
Transferability of the Chinese Ocean Trash Protection Measure
PROBLEMS Researchers at The University of Western Australia have found that although the Indian Ocean is the world's biggest dumping ground for plasti ......
mysql语句小提示之select * 和select 变量 ----------之间的区别
select * from 表名 得到的结果是该表中某一行符合要求的数据 select 某一变量 from 表明 得到的是该表中的某一变量 总结来说 ，前者得到的是一整个json数据元素，而后者得到的是该表中的某个变量（不是一整个json数据） 外层的select语句得到的结果是stu表中符合要求的 ......
The 2019 ICPC Asia Yinchuan Regional Contest
Preface 好久没有一场比赛做出两位数以上的题了，评价是写代码写得好爽 感觉这种时间比较古早的场的拿奖难度和现在比起来低好多的说，这场在现场如果有10题都能捧个亚军的杯了 但感觉主要是我们J题最后5分钟乱搞了个做法过了样例交上去就直接过了，后面看了其它人的做法好像和我们的都不一样的说，不知道是数 ......
The 'China Solution' in Nigeria
Nigeria， The northern region of Nigeria, particularly the Sahel region, is experiencing severe desertification due to factors such as deforestation, o ......
On the Opportunities and Risks of Foundation Models
引用链接：https://zhuanlan.zhihu.com/p/401157815 论文链接：https://arxiv.org/pdf/2108.07258.pdf 正文分四部分，阐述内容如下： 能力：模型的能力，模型可以做到的事 语言、视觉、机器人学、推理、交互、理解等； 应用：可应用领域 ......
org.elasticsearch.client.transport.NoNodeAvailableException: None of the configured nodes are available es端口号及集群名称
org.elasticsearch.client.transport.NoNodeAvailableException: None of the configured nodes are available elasticsearch有两个端口：http_port和transport.tcp.por ......
初中英语优秀范文100篇-001 The Best Teacher in My Heart
PDF格式公众号回复关键字:SHCZFW001 记忆树 1 It has been four years since I graduated from my primary school but I have always remembered my teacher Ms. Lin. 翻译 我小学毕 ......
The 2020 ICPC Asia Yinchuan Regional Programming Contest
Preface 好久没有和队友一起打比赛了，然后今天纯战犯，G一个初值设错WA了三发还卡了1h，最后冲D也因为细节原因没调出来 但这场现场的榜只能用惨淡来形容，6题就稳Au了，而且感觉如果最后能出7个题的话甚至能有出线机会？看来还是前面题目区分度太小了 A. Best Player 签到题，按题意模 ......
Transferability of the Chinese Eco-environmental Protection Measure
Most of Saudi Arabia is desert, so it faces serious problems of water shortage and desertification. China has employed technological methods and has t ......
Can't locate Devel/Size.pm in @INC (you may need to install the Devel::Size module)
001、perl 模块报错如下：Can't locate Devel/Size.pm in @INC (you may need to install the Devel::Size module) 002、解决方法： 安装该模块 (base) [b20223040323@admin1 003_an ......