hdu 2377 Bus Pass

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Bus Pass Time Limit: 10000/5000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 667 Accepted Submission(s): 271 Problem Description You travel a lot by bus and the costs of all the seperate tickets are starting to…

Bus Pass

ZOJ Problem Set - 2913 Bus Pass Time Limit: 5 Seconds Memory Limit: 32768 KB You travel a lot by bus and the costs of all the seperate tickets are starting to add up. Therefore you want to see if it might be advantageous for you to buy a bus pas…

ZOJ 2913 Bus Pass (近期的最远BFS HDU2377)

题意在全部城市中找一个中心满足这个中心到全部公交网站距离的最大值最小输出最小距离和满足最小距离编号最小的中心最基础的BFS 对每一个公交网站BFS dis[i]表示编号为i的点到全部公交网站距离的最大值 bfs全然部网站后 dis[i]最小的点就是要求的点咯 #include<cstdio> #include<cstring> #include<queue> #include<set> using namespace std; typedef…

hdu 5552 Bus Routes

hdu 5552 Bus Routes 考虑有环的图不方便,可以考虑无环连通图的数量,然后用连通图的数量减去就好了. 无环连通图的个数就是树的个数,又 prufer 序我们知道是 $ n^{n-2} $ 其中又由于有 $ n-1 $ 个边,每个边可以涂色,所以总共无环的方案数量是 $ m^{n-1} n^{n-2} $ 那么现在就要算连通图的数量了.这个不如不连通图的数量好算. 不连通图的数量怎么算呢,原本想的是容斥,但是貌似不好实现,看了题解发现一种神仙思路.考虑固定一个点,并且让这个点连出一…

HDU 3420 -- Bus Fair ACM

Bus Fair Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 600 Accepted Submission(s): 293 Problem Description You are now in Foolish Land. Once moving in Foolish Land you found that there is…

hdu 1690 Bus System(Dijkstra最短路)

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1690 Bus System Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 6569 Accepted Submission(s): 1692 Problem Description Because of the huge popula…

hdu 1690 Bus System （有点恶心）

Problem Description Because of the huge population of China, public transportation is very important. Bus is an important transportation method in traditional public transportation system. And it's still playing an important role even now. The bus sy…