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
Problem G: Going in Cycle!! Input: standard input Output: standard output You are given a weighted directed graph with n vertices and m edges. Each cycle in the graph has a weight, which equals to sum of its edges. There are so many cycles in the gra
刘汝佳蓝书上的题,标程做法是从终点倒着$spfa$,我是二分答案正着$spfa$判断可不可行.效果是一样的. [注意]多组数据建边一定要清零啊QAQ!!! #include<iostream> #include<cstdio> #include<cstring> #include<queue> using namespace std; int S, T, p; struct Node { int v, nex; Node ( , ) : v ( v ), n
Telephone Lines Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 8856 Accepted: 3211 Description Farmer John wants to set up a telephone line at his farm. Unfortunately, the phone company is uncooperative, so he needs to pay for some of