Trucking Problem Description A certain local trucking company would like to transport some goods on a cargo truck from one place to another. It is desirable to transport as much goods as possible each trip. Unfortunately, one cannot always use the ro…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=2962 Trucking Time Limit: 20000/10000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1763    Accepted Submission(s): 618 Problem Description A certain local trucking co…

---恢复内容开始--- 题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=2962 Trucking Time Limit: 20000/10000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 11428    Accepted Submission(s): 1104 Problem Description A certain lo…

题目 题意 给出一张图,每条道路有限高,给出车子的起点,终点,最高高度,问在保证高度尽可能高的情况下的最短路,如果不存在输出 $ cannot  reach  destination $ 跟前面 $ hdu5418 $ 一样的,题目挺基础的,但是在细节方面比较抠.要是最高度尽可能高,我们就可以想去枚举可能的高度去跑 $ spfa $ ,但我们可以发现这样效率太低了,那么我们为什么不二分答案呢?给出最高高度了,最低不就是 $ 0 $ 吗?二分答案再去跑 $ spfa $ 加上限制条件. 这题时限…

Trucking 题目连接: https://icpcarchive.ecs.baylor.edu/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=2224 Descriptionww.co A certain local trucking company would like to transport some goods on a cargo truck from one place to…

Trucking A certain local trucking company would like to transport some goods on a cargo truck from one place to another. It is desirable to transport as much goods as possible each trip. Unfortunately, one cannot always use the roads in the shortest…

题目链接:https://vjudge.net/contest/244167#problem/E 这题做了好久都还是超时,看了博客才发现可以用二分+最短路(dijkstra和spfa都可以),也可以用dijikstra先算一遍可以求的最大高度,再用dijkstra算一遍这个高度下的最短路,这个应该快一点. 题意:第一行输入n,m表示n个点,m条边,接下来m行,每行有四个数字u,v,h,w,其中u,v表示这条边连接的两个城市,h表示在这条边上货车可以通过的最大高度,w表示距离,最后一行输入三个数字…

Delay Constrained Maximum Capacity Path Time Limit: 10000/10000 MS (Java/Others)    Memory Limit: 65535/65535 K (Java/Others)Total Submission(s): 1790    Accepted Submission(s): 577 Problem Description Consider an undirected graph with N vertices, nu…

题意:最短路上有一条高度限制,给起点和最大高度,求满足高度最大情况下,最短路的距离 不明白为什么枚举所有高度就不对 #include<cstdio> #include<cstring> #include<algorithm> ; ][][],dist[],H[]; using namespace std; int n,line; int i,j,k; int st,ed,mid; ; ]; ]; bool dijkstra() { ]; ;i<=n;i++) {…

http://acm.hdu.edu.cn/showproblem.php?pid=1529 Cashier Employment Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 1489    Accepted Submission(s): 672 Problem Description A supermarket in Tehran…