「考える問題は簡単ですか」 Programming Detect You are given a directed graph G with N nodes and M edges. Each node has an operation, which could be "def sth" or "use sth". An array of nodes A is called Exceptional iff: - for each 1\leq i\leq |A|-1 ……

野兽成分更多的思考题 广西省人大音乐II 不支持audio！！ Electric Heritage Haniyasushin Keiki loves crafting. She has n kinds of items. The i-th kind of item has name name_i. She also has m recipes. The i-th recipe needs len_i of different kinds of di……

大家好，我是许久不见的XGN。今天早上闲着没事干，就决定把Blog给糊写了。 Before Start 12：00，比赛正式开始。可是我们队仍然在讨论某教练请我们吃饭的问题。白送饭，当然恰。但是只有SYR一人应邀前往。为什么？MK在老家，当然不能；我又不可能在6点之前赶到餐馆，……

比以往更加黑暗的思考题 广西省人大音乐 不支持audio！！ Idolatrize World Haniyasushin Keiki loves crafting. She has n kinds of items. The i-th kind of item has name name_i. She also has m recipes. The i-th recipe needs len_i of different kinds of dif……

大家好，我是（这场比赛里啥都没干的）XGN。今天的BLOG由我来糊写。 赛前 由于昨天的CF，我和MK早上起的都不早，大概都是11点左右吧。正当我在玩TH的时候，SYR的“I AM READY”到了，我才发现已经11：59了。于是匆忙没吃午饭便开始了。SYR从1001开始，我从1005开始，MK……

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 | ……