问题: POJ3026 分析: 采用BFS算出两两之间的距离,再用PRIM算法计算最小生成树. AC代码: //Memory: 220K Time: 32MS #include <iostream> #include <cstdio> #include <string> #include <cstring> #include <queue> using namespace std; ; ; char maze[maxn][maxn]; int m…

题目链接: https://vjudge.net/problem/POJ-3026 题目大意: 在一个y行 x列的迷宫中,有可行走的通路空格' ',不可行走的墙'#',还有两种英文字母A和S,现在从S出发,要求用最短的路径L连接所有字母,输出这条路径L的总长度. 思路: 先BFS预处理出所有的字母之间的距离,然后用prim模板 超级坑的是这里得用gets()吃掉回车符,用getchar()会WA #include<iostream> #include<cstdio> #includ…

Borg Maze POJ-3026 一开始看到这题是没有思路的,看了题解才知道和最小生成树有关系. 题目的意思是每次走到一个A或者S就可以分为多个部分继续进行搜索.这里就可以看出是从该点分出去的不同路径. 所以首先需要使用bfs求出每对顶点的最短路来,但是在这个过程中,我出了个bug,导致调试半天,就是那里bfs上下左右走的时候的x,y都用的原来的. 最小生成树就是使用prim算法,该算法和dijikstra算法特别像,唯一有区别的就是mincost函数的定义. #include<iostre…

The Borg is an immensely powerful race of enhanced humanoids from the delta quadrant of the galaxy. The Borg collective is the term used to describe the group consciousness of the Borg civilization. Each Borg individual is linked to the collective by…

Borg Maze DescriptionThe Borg is an immensely powerful race of enhanced humanoids from the delta quadrant of the galaxy. The Borg collective is the term used to describe the group consciousness of the Borg civilization. Each Borg individual is linked…

题目链接. 题目大意: 任意两点(点表示字母)可以连线,求使所有点连通,且权值和最小. 分析: 第一感觉使3维的BFS.但写着写着,发现不对. 应当用最小生成树解法.把每个字母(即A,或S)看成一个结点,如果求出来任意两个结点间的权值,则求解即为求最小生成树. 通过暴力,对每一个字母进行BFS,求出任意两个结点的距离.然后prim. AC代码如下: #include <iostream> #include <cstdio> #include <cstdlib> #inc…

Borg Maze Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 10554   Accepted: 3501 Description The Borg is an immensely powerful race of enhanced humanoids from the delta quadrant of the galaxy. The Borg collective is the term used to desc…

感受到出题人深深的~恶意 这提醒人们以后...数字后面要用gets~不要getchar 此外..不要相信那个100? Borg Maze Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 8524   Accepted: 2872 Description The Borg is an immensely powerful race of enhanced humanoids from the delta quadrant o…

Borg Maze Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 14165   Accepted: 4619 Description The Borg is an immensely powerful race of enhanced humanoids from the delta quadrant of the galaxy. The Borg collective is the term used to desc…

Borg Maze Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 12952   Accepted: 4227 Description The Borg is an immensely powerful race of enhanced humanoids from the delta quadrant of the galaxy. The Borg collective is the term used to desc…