翰林国际教育USACO备赛课程C++编程课实录
翰林国际教育USACO备赛课程C++编程课实录 一对一课程实录 翰林USACO课程体系流程图
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2020 The Brown Leadership Institute
2020 The Brown Leadership Institute 2020 布朗大学领导力夏校 项目介绍 The Brown Leadership Institute布朗大学领导力夏校是专为一心想对社会问题作出创造性建设的学生而设立的独特项目，旨在培养学生的社会责...
AP考试国内所有考点不可跨区
AP官网已公布2018年开考科目及各科目的具体考试时间，2018年AP考试报名即将开始，打算报考2018年AP考试的AP备考党们注意了，近几年AP考试热度递增，为避免部分考点考位紧张，考生需及时报名抢占考位。 一、2018年...
USACO 2015 US Open, Gold Problem 3. Trapped in the Haybales (Gold)
原题下载 USACO2015FEB-G3 答案 (Analysis by Nick Wu) Sort the haybales by location. Consider two haybales i and j such that Bessie can start somewhere between those haybales and break through all th...
USACO 2015 US Open, Gold Problem 2. Palindromic Paths
原题下载 USACO2015OPEN-G2 答案 (Analysis by Nick Wu) This is a DP problem where we iteratively count the number of palindromes that we can build from the middle. Let f(a,r1,r2) be the number of pal...
USACO 2015 US Open, Gold Problem 1. Googol
原题下载 USACO2015OPEN-G1 答案 (Analysis by Steven Hao) We first present a naive algorithm that recursively iterates through all nodes. Below is Python code implementing this naive algorithm, which...
USACO 2015 US Open, Silver Problem 3. Bessie's Birthday Buffet
原题下载 USACO2015OPEN-S3 答案 (Analysis by Nick Wu) Start by sorting the patches of the grass in increasing order of quality. Let f(i) be the maximum energy that we can accumulate if we end at pat...
USACO 2015 US Open, Silver Problem 2. Trapped in the Haybales (Silver)
原题下载 USACO2015OPEN-S2 答案 (Analysis by Nick Wu). If we pick a bale that we want to add hay to, then we can guarantee that Bessie cannot break through that bale. Therefore, once we have picked ...
USACO 2015 US Open, Silver Problem 1. Bessie Goes Moo
原题下载 USACO2015OPEN-S1 答案 (Analysis by Nick Wu) There are 5007 different combinations to check, which is far too many. However, just like with the bronze version of this problem, where we were...
USACO 2015 US Open, Bronze Problem 4. Palindromic Paths (Bronze)
原题下载 USACO2015OPEN-B4 答案 (Analysis by Nick Wu) Our first thought is to try all possible paths that Bessie can take. For small N, this works out well, but it turns out that for a grid of size ...
USACO 2015 US Open, Bronze Problem 2. Bessie Gets Even
原题下载 USACO2015OPEN-B2 答案 (Analysis by Nick Wu) In a pure brute-force solution, we would try every possible combination of assignments of variables to values. There are 7 variables, with at mo...
USACO 2015 US Open, Bronze Problem 3. Trapped in the Haybales (Bronze)
原题下载 USACO2015OPEN-B3 答案 (Analysis by Nick Wu) The NN hay bales define N−1N−1 intervals that Bessie can be inside. Let's consider answering for a given interval, whether Bessie can escape if ...
