Solved! Difficulty: Div2E 思考题for everyone Dynamic DP You are given: integer arrays A and dp of length N. integer arrays l and r of length N. For each 2\leq i\leq N,1\leq l_i\leq r_i\leq i-1 Known: dp_1=A_1 dp_i=min(dp[l_i,r_i])+A_i for 2\l……

更新内容 根据SYR神犇要求，在网站上添加代码编辑器。使用了ACE，而且还贴心的设计了自定义编辑器的功能。可以自己调样式、字体、自动补全等…… 同时提供了可供管理员自定义的Preference系统（就是用户参数表……）。可以修改源码增加Preference。 修复了一些BUG 注意：……

Member: Chairman Jing, XGN, ZJS, XZM, ZHD Also In: Dummy Rong,HTC Problem Solver FST A All ZHD(hacked) B All None C All ZHD(unfinished) D Chairman Jing ZHD(unfinished) E Unsolved F Unsolved

The story of Tengfei Episode 2 - The TengFei University Exam Hi, I am your friend ZJS again! As we know, in China we have 高考(University Exam) and in Tengfei country, we have two colleges: one is a special university called 腾飞国大学(Tengfei Univ……

HHSOJ is back at the new location here with version 1.11 running in Linux 🙂 For ZJS: Plz update it to 1.11.1 thx! UPD: You can use the domain to visit it now!

The Story Of TengFei Ep.1 - The introduction of Tengfei Hi, I am ZJS! Your lovely♂friend~ I am from TengFei country. A country far to the East. In this series, I will lead you into the beauty of Tengfei. Introduction Name English: Tengfei Chinese:……

直升机滞销，救救我们！ 介绍：https://www.smzdm.com/p/13372440/ 购买：https://www.hushhush.com/product/aircraft/helicopters/eurocopter-as350ba/ （已经一瞬涨至650欧力，，）

$$e^{ix}=cosx+isinx$$ $$\int_0^{\infty} {\frac{sinx}{x}} {\rm d}x=\frac {\pi}{2}$$ $$\iint {f(x,y)d\sigma}=\int{d\theta}\int{f(r,\theta)dr}$$ $$wordpress　nmsl$$

博客的基本设置完成后，就折腾起了注册，然后发现默认注册需要邮件验证... 懒得改源码了上网一查网易和qq邮箱都有免费SMTP服务 (SMTP) 想了想用网易的吧 qq邮箱没逼格 网易用手机验证开通了授权码就可以使用smtp服务了 然后在添加了个邮件服务。 本以为万事大吉了，……

我佛了，空气阻力太难力 111 空气阻力F=kv^2 所以1° 上升时 F=-kv^2-mg dv/dt=-kv^2/m-g ∫(-1/kv^2/m+g)dv=t+v0 左边应该是arctan,所以v=-tanCt+v0，，， 2° 下降时 F=mg-kv^2 ∫(1/mg-kv^2)dv=t+C 有理分式……