Highway Project Time Limit: 2 Seconds      Memory Limit: 65536 KB Edward, the emperor of the Marjar Empire, wants to build some bidirectional highways so that he can reach other cities from the capital as fast as possible. Thus, he proposed the highw…

Edward, the emperor of the Marjar Empire, wants to build some bidirectional highways so that he can reach other cities from the capital as fast as possible. Thus, he proposed the highway project. The Marjar Empire has N cities (including the capital)…

题意:单源最短路,给你一些路,给你这些路的长度,给你修这些路的话费,求最短路和最小花费. 析:本质就是一个最短路,不过要维护两个值罢了,在维护花费时要维护的是该路要花多少,而不是总的路线花费. 代码如下: #pragma comment(linker, "/STACK:1024000000,1024000000") #include <cstdio> #include <string> #include <cstdlib> #include <…

ZOJ Problem Set - 3946 Highway Project Time Limit: 2 Seconds      Memory Limit: 65536 KB Edward, the emperor of the Marjar Empire, wants to build some bidirectional highways so that he can reach other cities from the capital as fast as possible. Thus…

Highway Project Time Limit: 2 Seconds      Memory Limit: 65536 KB Edward, the emperor of the Marjar Empire, wants to build some bidirectional highways so that he can reach other cities from the capital as fast as possible. Thus, he proposed the highw…

题目链接:http://poj.org/problem?id=3635 Description After going through the receipts from your car trip through Europe this summer, you realised that the gas prices varied between the cities you visited. Maybe you could have saved some money if you were…

题目链接: http://www.icpc.moe/onlinejudge/showProblem.do?problemCode=3946 题解: 用dijkstra跑单元最短路径,如果对于顶点v,存在一系列边(ui,v)使得dis[v]最小(dis[v]表示0到v的距离).这些边能且只能选一条,那么我们自然应该选cost最小的那个边了. #include<iostream> #include<cstdio> #include<cstring> #include<…

1.迪杰斯特拉最小堆 #include<cstdio> #include<cstring> #include<cmath> #include<map> #include<queue> #include<algorithm> using namespace std; ; ; struct X{ int id; long long time,cost; bool operator < (const X &a) const {…

题目链接:http://codeforces.com/gym/101873/problem/C 题意: 这是七月的又一个阳光灿烂的日子,你决定和你的小女儿一起度过快乐的一天.因为她真的很喜欢隔壁镇上的仙女公园,所以你决定到那儿去玩一天. 你妻子同意开车送你去公园接你.她非常准时,所以她确切地告诉你她什么时候会到公园的前门来接你,而你必须恰好在那个时间到那里.因为你显然也不想在外面等,这样会让你的小女儿伤心——她本可以在公园里多待些时间. 现在你必须考虑游玩计划.你知道你什么时候到达,什么时候离开…

K - Watermelon Full of Water Time Limit:3000MS     Memory Limit:65536KB     64bit IO Format:%lld & %llu Submit Status Practice ZOJ 3632 Appoint description:   Description Watermelon is very popular in the hot summer. Students in ZJU-ICPC Team also lo…