HDU1241 Oil Deposits
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#include<iostream>
#include<cstring>
#include<algorithm>
#include<cstdlib>
#include<vector>
#include<cmath>
#include<stdlib.h>
#include<iomanip>
#include<list>
#include<deque>
#include<map>
#include <stdio.h>
#include <queue>
#define maxn 10000+5
#define ull unsigned long long
#define ll long long
#define reP(i,n) for(i=1;i<=n;i++)
#define rep(i,n) for(i=0;i<n;i++)
#define cle(a) memset(a,0,sizeof(a))
#define mod 90001
#define PI 3.141592657
#define INF 1<<30
const ull inf = 1LL << 61;
const double eps=1e-5;
using namespace std;
bool cmp(int a,int b){
return a>b;
}
int n,m;
int dir[8][2]={1,0,1,1,1,-1,0,-1,0,1,-1,0,-1,-1,-1,1};
char mp[110][110];
int vis[110][110];
void dfs(int x,int y)
{
vis[x][y]=1;
for(int i=0;i<8;i++)
{
int nx=x+dir[i][0];///md这块写错了,多么幼稚。。贡献了好几次wrong
int ny=y+dir[i][1];
if(!vis[nx][ny]&&nx<=m&&ny<=n&&nx>=1&&ny>=1&&mp[nx][ny]=='@')///8个方向搜索标记
{
vis[nx][ny]=1;
dfs(nx,ny);
}
}
}
int sum;
int main()
{
//freopen("in.txt","r",stdin);
//freopen("out.txt","w",stdout);
while(cin>>m>>n)
{
if(m==0)break;
for(int i=1;i<=m;i++)
{
for(int j=1;j<=n;j++)
{
cin>>mp[i][j];
}
}
//getchar();
cle(vis);
sum=0;
for(int i=1;i<=m;i++)
for(int j=1;j<=n;j++)
{
if(!vis[i][j]&&mp[i][j]=='@')
{
sum++;
dfs(i,j);
}
}
cout<<sum<<endl;
}
return 0;
}
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