USACO 2017年首輪月賽銅級題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...
翰林國際教育USACO備賽課程C++編程課實錄 一對一課程實錄 翰林USACO課程體系流程圖
原題下載 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...
原題下載 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...
原題下載 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...
原題下載 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...
原題下載 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 ...
原題下載 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...
原題下載 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?...
