原题下载 USACO2016-JAN-S3 答案: (First Solution Analysis by Nick Wu) In this problem, Farmer John is building a fence on a 2D grid. He wants to count the number of gates he needs to build in order ...
原题下载 USACO2016-JAN-B1 答案: (Analysis by Nick Wu) In this problem, we have the counts of how many participants are bronze, silver, gold, and platinum before a contest and how many are in each d...
原题下载 USACO2016-JAN-G2 答案: (Analysis by Mark Gordon) This problem is actually a veiled Dynamic Time Warping problem where the error function is the squared distance between FJ and Bessie. Ther...
原题下载 USACO2016-FEB-P3 答案 (Analysis by Nathan Pinsker) Although kk is rather small, trying all possible positions for the doors is O((nk))O((nk)) and is still way too slow. Sometimes it's help...
原题下载 USACO2016-FEB-P2 答案 (Analysis by Nathan Pinsker) This problem can be thought of as finding the minimum spanning tree on an (n+1)×(m+1)(n+1)×(m+1) grid of vertices representing the interi...
原题下载 USACO2016-FEB-P1 答案 (Analysis by Nathan Pinsker) The most immediately obvious solution is to try all possible locations for one gate (let's arbitrarily assume the north-south gate), then...
原题下载 USACO2016-FEB-G3 答案 (Analysis by Nathan Pinsker) For this problem, we're given a grid and want to connect all the interiors to each other. If we think of each interior region as a point ...
原题下载 USACO2016-FEB-G2 答案 (Analysis by Nathan Pinsker) Although kk is rather small, trying all possible positions for the doors is O((nk))O((nk)) and is still way too slow. Sometimes it's help...
原题下载 USACO2016-FEB-G1 答案 (Analysis by Nathan Pinsker) The first solution to this problem that people will likely come up with is something like the following: process each of the cows in some...
