C: 最舒适的路线 (并查集) #include<cstdio> #include<cstring> #include<iostream> #include<algorithm> using namespace std; #define INF 20000000 struct point { int x, y, v; }; point node[]; ]; bool cmp(point a, point b) { return a.v < b.v;/…
题目描述 Afandi is herding N sheep across the expanses of grassland when he finds himself blocked by a river. A single raft is available for transportation.Afandi knows that he must ride on the raft for all crossings, but adding sheep to the raft makes…
Problem E Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 635 Accepted Submission(s): 111 Problem Description 在数据维护的过程中,保持高效的数据访问和修改是非常重要的工作,这个题目就需要你用高效的手段来维护一段数据并执行不同的操作. 我们首先用如下公式生成一个矩阵A:…