USACO 2017年首轮月赛铜级题2 The Bovine Shuffle Convinced that happy cows generate more milk, Farmer John has installed a giant disco ball in his barn and plans to teach his cows to dance! Looking u...
USACO 2017年首轮月赛铜级题1 Blocked Billboard During long milking sessions, Bessie the cow likes to stare out the window of her barn at two huge rectangular billboards across the street advertising...
雷竞技raybet安卓版下载 USACO备赛课程C++编程课实录 一对一课程实录 Raybet比分 USACO课程体系流程图
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...
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...
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...
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...
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 ...
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...
