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原题下载 USACO2015JAN-G2 答案 (Analysis by Steven Hao) Because the bounds on N are small, a solution with exponential runtime will be fast enough. Following this train of thought, we naturally come...
原题下载 USACO2015JAN-S3 答案 import java.io.*; import java.util.*; public class meetingS { static int[][] bessieGrid; static int[][] elsieGrid; static int n; public static void main(String[] args)...
原题下载 USACO2015JAN-S1 答案 (Analysis by Mark Gordon) The first observation to make in this problem is that we can transform each cow into a time interval corresponding to the interval that the c...
原题下载 USACO2015JAN-S2 答案 #include <iostream> #include <vector> #include <cstring> #include <cstdio> using namespace std; #define MAXV 1010 bool vis[MAXV]; pair<long ...
原题下载 USACO2015JAN-B4 答案 (Analysis by Nick Wu) For each of Bessie and Elsie, we will simply try all possible paths that they can take to get from field 1 to field N. Because there are only at ...
原题下载 USACO2015JAN-B3 答案 (Analysis by Mark Gordon) This problem gives us two three digit strings and asks us to determine the bases X and Y such that those strings evaluate to the same integer...
原题下载 USACO2015JAN-B2 答案 (Analysis by Mark Gordon) This problem is a harder version of the Cow Routing problem that appeared earlier in the bronze contest. In this problem Bessie may use up to...
原题下载 USACO2015JAN-B1 答案 (Analysis by Mark Gordon) This problem asks us to find the minimum cost route that allows us to fly from city A to city B. This is a relatively straightforward problem...
原题下载 USACO2014DEC-B4 答案: (Analysis by Jonathan Paulson - jonathanpaulson@gmail.com) The main difficulty here is that A and B are so large we cannot consider each new cow separately. We have t...
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原题下载 USACO2014-DEC-S2 答案 (Analysis by Nick Wu) Let's define f(n,k)f(n,k) to be the smallest distance needed to end up at point nn having skipped exactly kk points. Given that we are at a spec...
原题下载 USACO2014-DEC-G3 答案 (Analysis by Mark Gordon) Two cows must be in different lanes if one cow overtakes the other at some point (or at the very end) in the jog. Viewed this way we can gre...
