[传送门]——那些有点用的网站

https://cnblogs.com 博客园

https://luogu.com.cn 洛谷

https://codeforces.com CF

https://oiwiki.org OI百科

https://www.cnblogs.com/mathematician/p/12633276.html 写给OIer的话

https://csacademy.com/app/graph_editor/ 可视化建图

https://www.wolframalpha.com/ 各类数理问题解答

https://www.cnblogs.com/wlzhouzhuan/p/16323183.html 烷烃、烯烃、烷基计数

https://vjudge.net/ vjudge

https://mp.weixin.qq.com/s?__biz=MjM5MTY5ODE4OQ==&mid=2651588437&idx=4&sn=9d42f7f65c216ec28aeefc93d2b12e84&chksm=bcfd2c4dddc7d8bb2a753a795030c1e0dd34a40e254ff533dea8364697a2f992c98d9a6a4215&scene=27

https://benben.sbs/ 犇犇保存站

https://lglg.top/ 洛谷帖子保存站

https://news.cnblogs.com/n/781592/ blue sky

https://www.cnblogs.com/zengzuo613/p/18589348 技术文档编写指南

https://www.cnblogs.com/manxinwu/p/18673177 generals.io

https://ipic.luogu.com.cn/docs/latex-symbols.pdf LaTeX符号对照表

https://katex.org/docs/supported.html Katex符号对照表