Bessie likes sightseeing, and today she is looking for scenic valleys. Of interest is an?N×NN×N?grid of cells, where each cell has a height. Every cell outside this square grid can be considered to...
Farmer John wants to divide his?NN?cows?(N≤7500)(N≤7500), conveniently numbered?1…N1…N, into?KK?non-empty groups (2≤K≤N2≤K≤N) such that no two cows from two different groups can interact with each ...
According to legend, St. Patrick banished all of the snakes in Mooland over a thousand years ago. However, snakes have since made their way back to Mooland! St. Patrick’s day was on March 17, so Be...
整理自USACO官網,名單較長,建議使用頁面內查找(Ctrl+F)快速定位 Final Results: USACO 2019 US Open Contest, Gold Key: * = Correct x = Wrong Answer (including possibly empty or missing output file) t...
Bessie and friends have been captured and are trapped in a secret compound in a location far from their farm, and it is up to Bessie to plan their escape! The compound consists of?NKNK?holding cell...
Farmer John is planning to build?NN?(1≤N≤1051≤N≤105) farms that will be connected by?N?1N?1?roads, forming a tree. Typically, whenever one of his farms is having an issue he is not told the specifi...