队名:Unlimited Code Works(无尽编码)  队员:Wu.Wang.Zhou 先说一下队伍:Wu是大三学长:Wang高中noip省一:我最渣,去年来大学开始学的a+b,参加今年区域赛之前只学了大部分图论内容,以及一些数据结构.动态规划等内容,水平不及两个队友... ... 首先流水账式的记录一下比赛过程吧,最后再写这一年的感想.体会与将来的学习计划. 先从长春站说起... ... 长春站是我加入ACM以来参加的第一场ICPC,因此无比的激动!从杭州出发,乘了整整24小时的火车,终…

出发日 中午坐大巴前往萧山机场. 哇开心又可以坐飞机了 飞机延误了.在候机大厅里十分无聊,先用机场的电脑玩了会小游戏 然后偷偷切了2个水题 (什么编译器IDE都没有,只能记事本了) 飞机上什么东西都没有,饿着肚子 降落前耳朵十分不适 沈阳好像没有想象中的冷……? 到了宾馆之后先放东西然后去吃烧烤(真是好吃0.0) 晚上回来休息. 热身赛日 早上被冻醒 和Wubaizhe一起吃完KFC回宾馆拿东西,再去报道. 哇这个衣服是黑色的!!看起来好好!! 好评!! 东北大学风景相当不错啊(貌似只要不是我在…

昨晚乱入学弟的训练赛,想了一下这个题.推导的过程中,加深了对公理化的概率论理解.$\newcommand{\d}{\mathop{}\!\mathrm{d}}$ 解法一 考虑 $ d < L$ 的情形. \begin{equation*} P(X = 1) = \frac{d}{L} \end{equation*} \begin{align*} P(X = 2) &= \int_0^{L - d} \frac{\d x}{L} \frac{d}{L - x} \\ &= \frac{…

Consider a un-rooted tree T which is not the biological significance of tree or plant, but a tree as an undirected graph in graph theory with n nodes, labelled from 1 to n. If you cannot understand the concept of a tree here, please omit this problem…

Here N (N ≥ 3) rabbits are playing by the river. They are playing on a number line, each occupying a different integer. In a single move, one of the outer rabbits jumps into a space between any other two. At no point may two rabbits occupy the same p…

Little boxes on the hillside. Little boxes made of ticky-tacky. Little boxes. Little boxes. Little boxes all the same. There are a green boxes, and b pink boxes. And c blue boxes and d yellow boxes. And they are all made out of ticky-tacky. And they…

The ant Welly now dedicates himself to urban infrastructure. He came to the kingdom of numbers and solicited an audience with the king. He recounted how he had built a happy path in the kingdom of happiness. The king affirmed Welly’s talent and hoped…

A triangle is a Heron’s triangle if it satisfies that the side lengths of it are consecutive integers t−1, t, t+ 1 and thatits area is an integer. Now, for given n you need to find a Heron’s triangle associated with the smallest t bigger than or equa…

题意: 给你数字或 * 的串,你可以交换一个*和数字.在最前面添1.在一个地方插入*,问你使串满足入栈出栈的(RNP)运算法则. 思路: 引用:https://blog.csdn.net/u011580493/article/details/40077119 由于一个 * 能消除2个数字,然后生成一个数字.因此首先要保证数字个数大于等于 ‘*’ 个数+1. 如果数字个数不够,就在最前面添加. 然后开始从头开始遍历,遇到*就看当前的数字个数是否有两个或以上.不够的话,从最后面开始找第一个不是‘*’…

131072K   A digit sum S_b(n)Sb​(n) is a sum of the base-bb digits of nn. Such as S_{10}(233) = 2 + 3 + 3 = 8   S10​(233)=2+3+3=8, S_{2}(8)=1 + 0 + 0 = 1S2​(8)=1+0+0=1, S_{2}(7)=1 + 1 + 1 = 3S2​(7)=1+1+1=3. Given NN and bb, you need to calculate \sum_…