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: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…

Trucking Time Limit: 20000/10000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1692    Accepted Submission(s): 587 Problem Description A certain local trucking company would like to transport some goods on a cargo…

题目大意:给定无向图,每一条路上都有限重,求能到达目的地的最大限重,同时算出其最短路. 题解:由于有限重,所以二分检索,将二分的值代入最短路中,不断保存和更新即可. #include <cstdio> #include <cstring> #include <utility> #include <queue> using namespace std; const int N=20005; const int INF=9999999; typedef pair…

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++) {…

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 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…

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…

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 route: so…

Trucking Time Limit: 20000/10000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 2216    Accepted Submission(s): 757 Problem Description A certain local trucking company would like to transport some goods on a cargo…