2019 多校(MUTC) Diary Round 3 大家好，又与大家见面了！我是差点爆0的syr。 今天的多校又是一个三人线上交流的round，我在世贸，那就多讲一些世贸打比赛的体验吧。 比赛环境 比赛来到现场的有：(hyh, ycs, jt) (sy, wsr, myf) (wjy, whr, hsc,cxw) (zrm, hqg, xxx)………

因为之前那台aliyun机器性能不够，再加上也快到期了，就决定迁站到Azure 2c4g上. Step 1 首先把网站目录整个打包成zip,网站数据库打包成sql,再下下来,具体指令我就不再说了吧23333 Step 2 开好机器后,首先装上lnmp包. 各个版本一定要与之前的相同 然后使用nginx创建网……

思考题 for grand contest Orange Boy(Monk.eyk.ing),Red girl(Mack.erel.pike) and their cat LGM(Legendary.Grand.Meow) are a happy family. But in fact, they are the heroes that is helping the world in silent. One day, the earth is under the attack……

思考题 about poems Is your love as confusing as the sun acquiesced? Once a Chinese poem said: There's sun in the east but rain in the west, Is your love as confusing as the sun acquiesced? Now you are given a undirected weighted graph G of N ……

思考题 for Hakurei Reimu Legacy of Lunatic Kingdom ZJS loves playing Touhou. In the famous STG game Touhou:Legacy of Lunatic Kingdom the game rules are defined as follows: The game consists of N "stages". Player start from Stage 1 and ends at Stage……

hi。我是队中最不给力的XGN。今天是MUTC第二场……我来瞎写一下今天的所见所闻。 「NOON」 中午12：00，比赛开始。和上次一样，我在上课。MK倒是在世贸可以参加比赛。SYR我就不知道了。反正等我到世贸的时候，大概12：15，世贸停电中……SYR没有到，空调没有开，没有灯和……

OGF - Cayley Formula Question Statement Prove # of trees on [n] = n^{n-2} Solution f:(1,2,3,...,n)\to(1,2,3,...,n) f(1)=1,f(n)=n Functional Digraph(directed graph) D V(D)=[n] 编者注：V为节点集合 (i,j)\in E(D) if f(i)=j 注：E为边集合 Example | ……

$\mathcal A$ is a collection of combinatorial objects. => $\mathcal A$ and $\mathcal B$ are combinatorically isomorphic if there exist a size-preserving bijection between $\mathcal A$ and $\mathcal B$ Q1 Prove that number of Dyck Paths D_{n-1} equa……

思考题 of math again Slime Legend II In the world of fantasy, there lives N+1 types of monsters indexed from 0 to N. Each monster can be represented by an integer pow_i - their power. And specially, type 0 is SLIME. Slime has a special ability to "……

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