Oil Deposits UVA - 572

Oil Deposits UVA - 572

#include<iostream>
#include<cstdio>
#include<cstring>
#include<map>
#include<vector>
#define IOS std::ios:sync_with_stdio(false);cin.tie(false);cout.tie(false);
using namespace std;
string mer[115];
int dit[115][115];
int n,m;
int solve(int x,int y)
{
	if(dit[x][y]==1||x<0||y<0||x>=n||y>=m||mer[x][y]!='@')return 0;
	else {
		
		dit[x][y]=1;
		solve(x-1,y-1);
		solve(x-1,y+1);
		solve(x+1,y+1);
		solve(x+1,y-1);
		solve(x,y+1);
		solve(x,y-1);
		solve(x+1,y);
		solve(x-1,y);
	}
	return 0;
}
int main()
{
	
	while(scanf("%d%d",&n,&m)==2 && n && m)
	{
		for(int i=0;i<n;i++)cin >> mer[i];
		memset(dit,0,sizeof(dit));
		int sum=0;
		for(int i=0;i<n;i++)
		{
			for(int k=0;k<m;k++)
			{
				if(mer[i][k]=='@' && dit[i][k]==0){
					sum++;
					solve(i,k);
				}
			}
		}
		cout<<sum<<endl;
	}
	return 0;
}