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昨天早上,我给从球王那要来的电脑上重装了 Ubuntu 16.04 。一开始发现网速比较慢(插着网线)且断断续续,后来索性没有网了。我折腾了一阵,就差没再次重装系统了。偶然在学弟的提醒下发现,原来没网的原因是我不小心将【点击了桌面左上角的网络状态图标(接网线时是上下两个箭头)后出现的那个菜单】里的 阅读全文
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题意 $\DeclareMathOperator{\lcm}{lcm}$选 $k$ ($k\le 10$) 个 $1$ 到 $n$($n\le 10^9$)之间的整数(可以相同),使得 $\lcm(a_1, \dots, a_k)$ 最大。 题解 这是 hihoCoder 挑战赛 6 的 B 题,C 阅读全文
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```c++ struct dl{ // x: line, y: column struct node{ int c, left, right, up, down; }; vector a; using vec = vector; using mat = vector; vec cnt; // 构造 阅读全文
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EXTRACTED from the Django document It's a common need to filter down the objects given in a list page by some key in the URL. Handily, the has a metho 阅读全文
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A view is a callable which takes a request and returns a response. A view can be function (function based view) or a class (class based view). Class b 阅读全文
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2017 年 6 月 28 日,Eclipse 社区(the Eclipse Community)发布了 "Eclipse Oxygen" 。本文记录了我在 Ubuntu 16.04 上安装 Eclipse Oxygen 遇到的问题,并给出了解决办法。 请勿从 Eclipse Neon 升级到 Ec 阅读全文
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For the purpose of this article, ECMA 262 refers to ECMAScript® 2017 Language Specification . ECMAScript Data Types & Values Each value has an associa 阅读全文
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最近在尝试用 JavaScript (Node.js) 写题。为此,特地看了 "ECMAScript 2017 Language Specification" (大雾)。写题一般是从文件输入,确切地说是,将 stdin 重定向到文件。在C/C++ 中这可以通过 函数很方便地实现, 因而想知道 Nod 阅读全文
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Links to the Django documents: "the Django template language" "automatically generated context variable" "generic views of objects" 阅读全文
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GNU find searches the directory tree rooted at each given starting point by evaluating the given expression from left to right, according to the rules 阅读全文