2020年USACO 2月比赛银级获奖名单
Final Results: USACO 2020 February Contest, Silver Key: * = Correct x = Wrong Answer (including possibly empty or missing output file) t = Timeout c = Didn't Compile ! = Run-time error or exceeded ...
USACO 2020 February Contest, Silver Problem 1. Swapity Swapity Swap
USACO 2020 February Contest, Silver Problem 1. Swapity Swapity Swap Farmer John's NN cows (1≤N≤1051≤N≤105) are standing in a line. The iith cow from the left has label ii for each 1≤i≤N1≤i≤N. Farme...
USACO 2020 February Contest, Silver Problem 2. Triangles
Farmer John would like to create a triangular pasture for his cows. There are NN fence posts (3≤N≤1053≤N≤105) at distinct points (X1,Y1)…(XN,YN)(X1,Y1)…(XN,YN) on the 2D map of his farm. He can cho...
USACO 2020 February Contest, Silver Problem 3. Clock Tree
USACO 2020 February Contest, Silver Problem 3. Clock Tree Farmer John's new barn has a truly strange design: it consists of NN rooms (2≤N≤25002≤N≤2500), conveniently numbered 1…N1…N, and N−1N−1 cor...
2020年1月USACO白金级获奖名单
Final Results: USACO 2020 January Contest, Platinum Key: * = Correct x = Wrong Answer (including possibly empty or missing output file) t = Timeout c = Didn't Compile ! = Run-time error or exceeded...
USACO 2020 January Contest, Platinum Problem 1. Cave Paintings
USACO 2020 January Contest, Platinum Problem 1. Cave Paintings Bessie has become an artist and is creating paintings of caves! Her current work in progress is a grid of height NN such that each row...
USACO 2020 January Contest, Platinum Problem 2. Non-Decreasing Subsequences Return to Problem List
USACO 2020 January Contest, Platinum Problem 2. Non-Decreasing Subsequences Return to Problem List Bessie was recently taking a USACO contest and encountered the following problem. Of course, Bessi...
USACO 2020 January Contest, Platinum Problem 3. Falling Portals
USACO 2020 January Contest, Platinum Problem 3. Falling Portals There are NN (2≤N≤2⋅1052≤N≤2⋅105) worlds, each with a portal. Initially, world ii (for 1≤i≤N1≤i≤N) is at xx-coordinate ii, and yy-coo...
2020年1月USACO金级获奖名单
Final Results: USACO 2020 January Contest, Gold Key: * = Correct x = Wrong Answer (including possibly empty or missing output file) t = Timeout c = Didn't Compile ! = Run-time error or exceeded mem...
