码迷,mamicode.com
首页 > 其他好文 > 详细

HDU 1312 Red and Black (搜索)

时间:2014-08-21 22:44:15      阅读:230      评论:0      收藏:0      [点我收藏+]

标签:des   style   blog   http   color   java   os   io   

Red and Black

Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)
Total Submission(s): 9795    Accepted Submission(s): 6103


Problem Description
There is a rectangular room, covered with square tiles. Each tile is colored either red or black. A man is standing on a black tile. From a tile, he can move to one of four adjacent tiles. But he can‘t move on red tiles, he can move only on black tiles.

Write a program to count the number of black tiles which he can reach by repeating the moves described above. 
 

 

Input
The input consists of multiple data sets. A data set starts with a line containing two positive integers W and H; W and H are the numbers of tiles in the x- and y- directions, respectively. W and H are not more than 20.

There are H more lines in the data set, each of which includes W characters. Each character represents the color of a tile as follows.

‘.‘ - a black tile 
‘#‘ - a red tile 
‘@‘ - a man on a black tile(appears exactly once in a data set) 
 

 

Output
For each data set, your program should output a line which contains the number of tiles he can reach from the initial tile (including itself). 
 

 

Sample Input
6 9
....#.
.....#
......
......
......
......
......
#@...#
.#..#.
11 9
.#.........
.#.#######.
.#.#.....#.
.#.#.###.#.
.#.#..@#.#.
.#.#####.#.
.#.......#.
.#########.
...........
11 6
..#..#..#..
..#..#..#..
..#..#..###
..#..#..#@.
..#..#..#..
..#..#..#..
7 7
..#.#..
..#.#..
###.###
...@...
###.###
..#.#..
..#.#..
0 0
 

 

Sample Output
45
59
6
13
 

 

Source
 

 

Recommend
Eddy
 

 

搜索求出这个人能走多少黑色格子

bubuko.com,布布扣
 1 #include<cstdio>
 2 #include<iostream>
 3 #include<cstring>
 4 #include<stdlib.h>
 5 #include<algorithm>
 6 using namespace std;
 7 const int MAXN=100;
 8 int dir[4][2]={{0,1},{1,0},{0,-1},{-1,0}};
 9 char map[MAXN][MAXN],s[MAXN];
10 int vis[MAXN][MAXN];
11 int ans,n,m;
12 void DFS(int x,int y)
13 {
14     vis[x][y]=1;
15     ans++;
16     for(int i=0;i<4;i++)
17     {
18         int xx=x+dir[i][0];
19         int yy=y+dir[i][1];
20         if(0<=xx&&xx<n&&0<=yy&&yy<m&&!vis[xx][yy]&&map[xx][yy]!=#)
21             DFS(xx,yy);
22     }
23 }
24 int main()
25 {
26     //freopen("in.txt","r",stdin);
27     int x,y;
28     while(scanf("%d %d%*c",&m,&n)&&(n||m))
29     {
30         for(int i=0;i<n;i++)
31         {
32             for(int j=0;j<m;j++)
33             {
34                 scanf("%c",&map[i][j]);
35                 if(map[i][j]==@)
36                 {
37                     x=i;
38                     y=j;
39                 }
40             }
41             getchar();
42         }
43         memset(vis,0,sizeof(vis));
44         ans=0;
45         DFS(x,y);
46         printf("%d\n",ans);
47     }
48     return 0;
49 }
View Code

 

HDU 1312 Red and Black (搜索),布布扣,bubuko.com

HDU 1312 Red and Black (搜索)

标签:des   style   blog   http   color   java   os   io   

原文地址:http://www.cnblogs.com/clliff/p/3928204.html

(0)
(0)
   
举报
评论 一句话评论(0
登录后才能评论!
© 2014 mamicode.com 版权所有  联系我们:gaon5@hotmail.com
迷上了代码!