D - 广搜 基础 Crawling in process... Crawling failed Time Limit:1000MS     Memory Limit:30000KB     64bit IO Format:%I64d & %I64u Submit Status Description BackgroundMr Somurolov, fabulous chess-gamer indeed, asserts that no one else but him can move kni…

俩月前写的普通BFS #include <cstdio> #include <iostream> #include <cstring> #include <queue> using namespace std; int CAS,sx,sy,k,ex,ey,vis[305][305],xx[]={1,-1,2,-2,1,-1,2,-2},yy[]={2,-2,1,-1,-2,2,-1,1}; bool check(int x,int y) { return x…

题目链接 http://poj.org/problem?id=1915 题意 输入正方形棋盘的边长.起点和终点的位置,给定棋子的走法,输出最少经过多少步可以从起点走到终点. 思路 经典bfs题目. 代码 #include <iostream> #include <cstdio> #include <cstring> #include <queue> using namespace std; struct Node { int r; int c; int st…

题目链接:https://vjudge.net/problem/POJ-1915 题意:求棋盘上起点到终点最少的步数. 思路:双向广搜模板题,但玄学的是我的代码G++会wa,C++过了,没找到原因QAQ.. AC代码: #include<cstdio> #include<algorithm> #include<queue> using namespace std; ; ][]={-,,-,,,,,,,-,,-,-,-,-,-}; int T,n,sx,sy,ex,ey,…

Knight Moves Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 26952   Accepted: 12721 Description Background Mr Somurolov, fabulous chess-gamer indeed, asserts that no one else but him can move knights from one position to another so fast…

Knight Moves Time Limit: 1000MS Memory Limit: 30000K Total Submissions: 25909 Accepted: 12244 Description Background Mr Somurolov, fabulous chess-gamer indeed, asserts that no one else but him can move knights from one position to another so fast. Ca…

Knight Moves Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 26102   Accepted: 12305 Description Background Mr Somurolov, fabulous chess-gamer indeed, asserts that no one else but him can move knights from one position to another so fast…

图的遍历的定义: 从图的某个顶点出发访问遍图中所有顶点,且每个顶点仅被访问一次.(连通图与非连通图) 深度优先遍历(DFS): 1.访问指定的起始顶点: 2.若当前访问的顶点的邻接顶点有未被访问的,则任选一个访问之:反之,退回到最近访问过的顶点:直到与起始顶点相通的全部顶点都访问完毕: 3.若此时图中尚有顶点未被访问,则再选其中一个顶点作为起始顶点并访问之,转 2: 反之,遍历结束. 连通图的深度优先遍历类似于树的先根遍历 如何判别V的邻接点是否被访问? 解决办法:为每个顶点设立一个“访问标志”…

1656: [Usaco2006 Jan] The Grove 树木 Time Limit: 5 Sec  Memory Limit: 64 MBSubmit: 186  Solved: 118[Submit][Status][Discuss] Description The pasture contains a small, contiguous grove of trees that has no 'holes' in the middle of the it. Bessie wonders…

传送门 Catch That Cow Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 80273   Accepted: 25290 Description Farmer John has been informed of the location of a fugitive cow and wants to catch her immediately. He starts at a point N (0 ≤ N ≤ 10…