题意:找出一块地有多少油田.'@'表示油田.找到一块就全部标记. #include<cstdio> #define maxn 110 char s[maxn][maxn]; int n,m; int ans; ][] = {{-,-},{-,},{-,},{,},{,},{,},{,-},{,-}}; void dfs(int x,int y) { s[x][y] = '*'; ;i < ; i++){ ]; ]; && xx < m && yy &…

The GeoSurvComp geologic survey company is responsible for detecting underground oil deposits. GeoSurvComp works with one large rectangular region of land at a time, and creates a grid that divides the land into numerous square plots. It then analyze…

题意:给你一个地图,求联通块的数量. 题解: for(所有还未标记的‘@’点) 边dfs边在vis数组标记id,直到不能继续dfs. 输出id及可: ac代码: #define _CRT_SECURE_NO_WARNINGS #include "stdio.h" #include<stdio.h> #include<algorithm> #include<string> #include<vector> #include<list&…

UVA 572     DFS(floodfill)  用DFS求连通块 Time Limit:1000MS     Memory Limit:65536KB     64bit IO Format:%I64d & %I64u Description Due to recent rains, water has pooled in various places in Farmer John's field, which is represented by a rectangle of N x M…

UVA 572 -- Oil Deposits(DFS求连通块) 图也有DFS和BFS遍历,由于DFS更好写,所以一般用DFS寻找连通块. 下述代码用一个二重循环来找到当前格子的相邻8个格子,也可用常量数组或者写8条DFS调用. 下述算法是:种子填充(floodfill) 两种连通区域 四连通区域:从区域内一点出发,可通过上.下.左.右四个方向的移动组合,在不越出区域的前提下,能到达区域内的任意像素 八连通区域:从区域内每一像素出发,可通过八个方向,即上.下.左.右.左上.右上.左下.右下移动的…

这场比赛可以说是灰常的水了,涨信心场?? 今下午义务劳动,去拿着锄头发了将近一小时呆,发现自己实在是干不了什么,就跑到实验室打比赛了~ 之前的比赛补题补了这么久连一场完整的都没补完,结果这场比完后一小时连题解都出来了··· A-烤肉拌饭 ( uva 572) 就是求联通块的数量啊,刚学dfs的时候做的那种! #include <cstdio> #include <algorithm> #include <cstring> #include <iostream>…

https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=513 终于开始接触图了,恩,开始接触DFS了,这道题就是求连通分量,比较简单. #include<iostream> #include<cstring> using namespace std; int m, n; //记录连通块的数量 ][]; ][]; void…

题意:求连通块个数. 分析:dfs. #include<cstdio> #include<cstring> #include<cstdlib> #include<cctype> #include<cmath> #include<iostream> #include<sstream> #include<iterator> #include<algorithm> #include<string&g…

Description The GeoSurvComp geologic survey company is responsible for detecting underground oil deposits. GeoSurvComp works with one large rectangular region of land at a time, and creates a grid that divides the land into numerous square plots. It…

 Oil Deposits  The GeoSurvComp geologic survey company is responsible for detecting underground oil deposits. GeoSurvComp works with one large rectangular region of land at a time, and creates a grid that divides the land into numerous square plots.…