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| Time Limit: 1000MS | Memory Limit: 65536K | |
| Total Submissions: 22736 | Accepted: 11457 |
Description
Input
Output
Sample Input
10 12 W........WW. .WWW.....WWW ....WW...WW. .........WW. .........W.. ..W......W.. .W.W.....WW. W.W.W.....W. .W.W......W. ..W.......W.
Sample Output
3
题意:大概就是W的地方是水洼 求有几个水洼 上下左右还有斜线方向都算是连同
题解:深搜求连通区域 搜索过的地方就直接标记成.就好咯 最后进入过几次深搜就有几个水洼
#include <iostream>
#include <cstdio>
#include <cstring>
using namespace std;
const int maxn = 110;
int N, M; //长宽
char fi[maxn][maxn]; //地图
void dfs(int x, int y);
int main(){
scanf("%d%d", &N, &M);
for(int i = 0; i < N; ++i){
scanf("%s", fi[i]);
}
int ans = 0; //答案
for(int i = 0; i < N; ++i){
for(int j = 0; j < M; ++j){
if(fi[i][j] == 'W'){ //搜索到一个新的W区域
dfs(i, j); //进入搜索
++ans; //答案+1
}
}
}
printf("%d\n", ans);
return 0;
}
void dfs(int x, int y){
fi[x][y] = '.'; //搜索过的点标记为.
for(int dx = -1; dx <= 1; ++dx){ //搜索上下左右斜线方向
for(int dy = -1; dy <= 1; ++dy){
int nx = x + dx;
int ny = y +dy;
if(0 <= nx && nx < N && 0 <= ny && ny < M && fi[nx][ny] == 'W'){ //符合要求则继续搜索
dfs(nx, ny);
}
}
}
}
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原文地址:http://blog.csdn.net/u012431590/article/details/45649673