网址

https://files.cnblogs.com/files/blogs/796984/cf_predictor-1.3.2.zip?t=1693100864&download=true

https://codeforces.comcodeforces

https://vjudge.csgrandeur.cn/vjudge

http://robo-maker.cn/home
逐月

https://atcoder.jpatcoder

ac.robo-maker.cn/逐月2

http://192.168.10.251/逐月内网

https://www.luogu.com.cn/team/39073逐月蒟蒻组

http://www.usaco.org/index.phpUSACO

https://www.noi.cn/NOI官网

https://www.xinyoudui.com/信友队

https://www.jisuanke.com/计蒜客

https://www.deepl.com/翻译网站

https://iai.sh.cn/上海计算机学会竞赛平台

https://oier.baoshuo.dev/信息学竞赛个人简历搜索工具

https://time.is/时间1

https://www.timeanddate.com/worldclock/时间2

https://www.cnblogs.com/huangqixuan/huangqixuan的博客园

https://en.cppreference.com/C++语法大全、干货

https://oi-wiki.org/C++模版

https://csacademy.com/app/graph_editor/建图网站

https://www.qianbo.com.cn/Tool/Text-Difference/在线文本差异对比

https://fangkuai767.github.io/EatKun/划水：EatKun

https://wordlewordle.org/划水：拼英文单词

https://www.udebug.com/

https://www.cnblogs.com/zhaohongbing/p/16332606.html
https://www.cnblogs.com/huangqixuan/p/17621484.html

https://www.geogebra.org/calculator二维平面画图网站

https://sourceforge.net/projects/orwelldevcpp/Devcpp官网下载

https://vjudge.net/contest/530671Markdown数学符

http://wildwolf.yali.edu.cn/野狼OJ

c++手动开 O(fast)

#pragma GCC optimize(fast)

c++火车头

#pragma GCC optimize(1)
#pragma GCC optimize(2)
#pragma GCC optimize(3)
#pragma GCC optimize("Ofast")
#pragma GCC optimize("inline")
#pragma GCC optimize("-fgcse")
#pragma GCC optimize("-fgcse-lm")
#pragma GCC optimize("-fipa-sra")
#pragma GCC optimize("-ftree-pre")
#pragma GCC optimize("-ftree-vrp")
#pragma GCC optimize("-fpeephole2")
#pragma GCC optimize("-ffast-math")
#pragma GCC optimize("-fsched-spec")
#pragma GCC optimize("unroll-loops")
#pragma GCC optimize("-falign-jumps")
#pragma GCC optimize("-falign-loops")
#pragma GCC optimize("-falign-labels")
#pragma GCC optimize("-fdevirtualize")
#pragma GCC optimize("-fcaller-saves")
#pragma GCC optimize("-fcrossjumping")
#pragma GCC optimize("-fthread-jumps")
#pragma GCC optimize("-funroll-loops")
#pragma GCC optimize("-fwhole-program")
#pragma GCC optimize("-freorder-blocks")
#pragma GCC optimize("-fschedule-insns")
#pragma GCC optimize("inline-functions")
#pragma GCC optimize("-ftree-tail-merge")
#pragma GCC optimize("-fschedule-insns2")
#pragma GCC optimize("-fstrict-aliasing")
#pragma GCC optimize("-fstrict-overflow")
#pragma GCC optimize("-falign-functions")
#pragma GCC optimize("-fcse-skip-blocks")
#pragma GCC optimize("-fcse-follow-jumps")
#pragma GCC optimize("-fsched-interblock")
#pragma GCC optimize("-fpartial-inlining")
#pragma GCC optimize("no-stack-protector")
#pragma GCC optimize("-freorder-functions")
#pragma GCC optimize("-findirect-inlining")
#pragma GCC optimize("-fhoist-adjacent-loads")
#pragma GCC optimize("-frerun-cse-after-loop")
#pragma GCC optimize("inline-small-functions")
#pragma GCC optimize("-finline-small-functions")
#pragma GCC optimize("-ftree-switch-conversion")
#pragma GCC optimize("-foptimize-sibling-calls")
#pragma GCC optimize("-fexpensive-optimizations")
#pragma GCC optimize("-funsafe-loop-optimizations")
#pragma GCC optimize("inline-functions-called-once")
#pragma GCC optimize("-fdelete-null-pointer-checks")

洛谷油猴插件：

• https://greasyfork.org/
• 洛谷提交记录难度显示
• 洛谷题目难度显示 luogu dif render
• Luogu Search AnyWhere
• Luogu Quick Searcher
• Better Luogu Problem Searcher

ac-predictor

https://www.cnblogs.com/whrwlx/p/18083763