数据结构实验之图论五:从起始点到目标点的最短步数(BFS) Time Limit: 1000 ms Memory Limit: 65536 KiB Problem Description 在古老的魔兽传说中,有两个军团,一个叫天灾,一个叫近卫.在他们所在的地域,有n个隘口,编号为1..n,某些隘口之间是有通道连接的.其中近卫军团在1号隘口,天灾军团在n号隘口.某一天,天灾军团的领袖巫妖王决定派兵攻打近卫军团,天灾军团的部队如此庞大,甚至可以填江过河.但是巫妖王不想付出不必要的代价,他想知道在不修…
数据结构实验之图论五:从起始点到目标点的最短步数(BFS) Time Limit: 1000 ms Memory Limit: 65536 KiB Submit Statistic Discuss Problem Description 在古老的魔兽传说中,有两个军团,一个叫天灾,一个叫近卫.在他们所在的地域,有n个隘口,编号为1..n,某些隘口之间是有通道连接的.其中近卫军团在1号隘口,天灾军团在n号隘口.某一天,天灾军团的领袖巫妖王决定派兵攻打近卫军团,天灾军团的部队如此庞大,甚至可以填江过…
分析:有向图里面找最短路径,原理就是每一步都走距离自己最近的路, 一旦发现走一步可以到,那么这个一定是最短的. #include <bits/stdc++.h> using namespace std; struct node { int step; int data; }l,w; int vis[1002]; int gra[1002][1002]; int n, m, u, v; void bfs(int s) { vis[s] = 1; w.data = s; w.step = 0; s…
Weibo is known as the Chinese version of Twitter. One user on Weibo may have many followers, and may follow many other users as well. Hence a social network is formed with followers relations. When a user makes a post on Weibo, all his/her followers…
A graph which is connected and acyclic can be considered a tree. The hight of the tree depends on the selected root. Now you are supposed to find the root that results in a highest tree. Such a root is called the deepest root. Input Specification: Ea…
Given a directed, acyclic graph of N nodes. Find all possible paths from node 0 to node N-1, and return them in any order. The graph is given as follows: the nodes are 0, 1, ..., graph.length - 1. graph[i] is a list of all nodes j for which the ed…
转载请注明出处:viewmode=contents">http://blog.csdn.net/u012860063?viewmode=contents 题目链接: POJ:http://poj.org/problem?id=2243 HDU: pid=1372">http://acm.hdu.edu.cn/showproblem.php? pid=1372 Problem Description A friend of you is doing research on t…
bfs广度优先搜索模板 本人蒟蒻,为响应号召 写下bfs模板一篇 可以适用于求最短步数,等最优解问题.如有不足或者不对的地方请各位大佬及时指出 ^-^ 欢迎来戳 具体实现代码(C++) 各个模块功能和简单明了 #include <iostream> #include <queue> #include <algorithm> #define N 100 using namespace std; int n, m; int map[N][N]; bool vis[N][N]…