JSOI 2019 Diary Day 4 又是一场噩梦…… Problem A 一道毒瘤题的样子？读了2遍才把题目读懂……然后发现就不会做了。先去做T2了。 Problem B 我一看，和我出给300iq的神秘题目一样吗？不过要计数，难度瞬间上去了……10分的状压DP还是蛮好写的，然后写了20分的排列组合WA掉……

JSOI 2019 Diary Day 3 第一轮烤考炸掉了我又厚颜无耻充满希望的回来啦！这次比赛是2019/4/28日在熟悉的南航举行。今天是试机日……本来不打算来的，但是试机可以不上HBHB说晚上不上课来试机，于是我就来了。 preInit(); 来得太早，人家还在上课……只能在教室外面等。看……

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Rong Kong is a filial boy. There are N pears on the table. Both he and his brother can eat them. They both want to eat as much as they can. Each of them weighs a[i]. It costs a[i] time for a boy to eat a pear weighing a[i] and it gives him a[i] sat……

考虑空气阻力的竖直上抛问题 由于这篇blog语言儒雅随和通俗易懂，所以一般通过观众也可以放心观看 阻力 f=mkv^2, 其中m为物体质量，k为常数 阻力始终与运动方向相反 重力加速度为g 以初速度 v_0 将该物体上抛，试描述其运动速度与时间的关系 Answer: 首先因为阻力的方……

由于这篇blog语言儒雅随和通俗易懂，所以一般通过观众也可以放心观看 例题（著名题）： $\int^{\infty}{0}{\frac{{e^{cosx}}{sin(sinx)}}{x}}dx这道题乍一看很复杂，但其实在回顾过3B1B的傅里叶变换后，才发现这是一道可以用傅里叶级数暴力的题 首先介绍此题要用到的……

期中考试不更新 🙂

思考题 for everyone Man on Graph Given a graph of N nodes and M edges. On node i there are A_i men. Then each person moves along 1 edge randomly connected to the node he stands. But if two men walked along the same edge, they'll fight and both die.……

What's the story behind the hamburgers? Welcome to Hell Hole Legend 2 Episode 1! Installing Download the game zip and run the PyWright.exe Click "Games" and click on the episode title to play:) Follow ingame instructions. Download For HHS Members,……

Solved! Difficulty: D2E 思考题 for everyone Man on Graph You are given M chains each of N+1 nodes. We call the i-th node on the j-th chain (j,i-1). We define a bridge edge connecting (a,b) and (c,d) as follows: - a≠c - b=d - b and d don't equ……