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poj 1511 Invitation Cards
这个题的题意就是从1到所有点以及从所有点回到1所需最小的花费。这道题实质是求最短路径,我的思路是用SPFA,正反两次SPFA。对spfah还是第一次写,不知道怎么优化。
代码:
#include<iostream>
#include<queue>
using namespace std;
const int maxn=1000005,inf=100000000 ...
poj 1511 Invitation Cards
这个题的题意就是从1到所有点以及从所有点回到1所需最小的花费。这道题实质是求最短路径,我的思路是用SPFA,正反两次SPFA。对spfah还是第一次写,不知道怎么优化。
代码:
#include<iostream>
#include<queue>
using namespace std;
const int maxn=1000005,inf=100000000 ...
【最短路+spfa+有难度】杭电 hdu 2377 Bus Pass
/* THE PROGRAM IS MADE BY PYY */
/*----------------------------------------------------------------------------//
Copyright (c) 2011 panyanyany All rights reserved.
URL : http://ac ...
【最短路+dijkstra+floyd+spfa】1596 find the safest road
Dijkstra 算法
/* THE PROGRAM IS MADE BY PYY */
/*----------------------------------------------------------------------------//
Copyright (c) 2011 panyanyany All rights reserved.
URL : ...
【最短路+三种解法】杭电 hdu 1690 Bus System
Floyd 算法
/* THE PROGRAM IS MADE BY PYY */
/*----------------------------------------------------------------------------//
Copyright (c) 2011 panyanyany All rights reserved.
URL ...
【最短路+dijkstra+spfa】杭电 hdu 2722 Here We Go(relians) Again
Dijkstra 解法
/* THE PROGRAM IS MADE BY PYY */
/*----------------------------------------------------------------------------//
Copyright (c) 2011 panyanyany All rights reserved.
URL : ht ...
【最短路+dijkstra+spfa】杭电 hdu 2962 Trucking
Spfa 解法
/* THE PROGRAM IS MADE BY PYY */
/*----------------------------------------------------------------------------//
Copyright (c) 2011 panyanyany All rights reserved.
URL : http:/ ...
HDU 2722 Here We Go(relians) Again
Here We Go(relians) Again
Time Limit: 2000/1000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 162Accepted Submission(s): 99
Problem Description
The Gorelians are a wa ...