UVa 572 - Oil Deposits

/*
Lionel Messi is such a player that you may catch him, you may touch him, you may feel him
and definitely you may Love him.
Lionel Messi is Messi. A little Magician in this World.

*/

// Accepted
// Algorithm: DFS (Horizontal , Vertical, Diagonal)

#include<bits/stdc++.h>

using namespace std;

#define fast ios_base::sync_with_stdio(0)
#define bfast cin.tie(0)
#define outs(x) cout << x << " "
#define outn(x) cout << x << "\n"
#define sf scanf
#define pf printf
#define nl puts("")
#define psb push_back
#define mset(c,v) memset(c , v , sizeof c)
#define loop0(n) for(int i=0; i<n; i++)
#define loop1(n) for(int i=1; i<=n; i++)
#define mpair(x , y) make_pair(x , y)
#define all(x) x.begin(), x.end()
#define pi acos(-1.0)
#define psb push_back

typedef unsigned long long ull;
typedef long long LL;
typedef vector<int>vii;
typedef vector<LL>vll;
typedef vector<string>vs;
typedef map<int, int>mpii;
typedef map<string, int>mpsi;
typedef map<char, int>mpci;
typedef map<LL, LL>mpll;

const int mod = 1000007;
const int high = 200;

int row, col;
char adj[high][high];
bool visited[high][high];

void in(int row, int col)
{
    int i , j;
    char ch;

    for(i=0; i<row; i++)
    {
        for(j=0; j<col; j++)
        {
            sf(" %c", &ch);

            adj[i][j] = ch;
        }
    }
}

void DFS(int x , int y)
{
    if((x<0 || x>=row) || (y<0 || y>=col)) return;

    if(adj[x][y] != '@') return;

    if(adj[x][y] == '@') adj[x][y] = '*';

    visited[x][y] = true;

    DFS(x , y+1); // horizontal
    DFS(x , y-1); // horizontal
    DFS(x+1 , y); // vertical
    DFS(x-1 , y); // vertical
    DFS(x+1 , y+1); // diagonal
    DFS(x-1 , y+1); // diagonal
    DFS(x+1 , y-1); // diagonal
    DFS(x-1 , y-1); // diagonal
}

int main()
{
    //fast;
    int i , j , cnt=0;
    char ch;

    while(~sf("%d %d", &row, &col))
    {
        if(!row) break;

        mset(adj , '*');
        mset(visited , false);

        in(row , col);

        cnt = 0;

        for(i=0; i<row; i++)
        {
            for(j=0; j<col; j++)
            {
                if(adj[i][j] == '@' && !visited[i][j])
                {
                    DFS(i , j);

                    cnt+=1;
                }
            }
        }

        //outn(cnt);
        pf("%d\n" , cnt);
    }

    return 0;
}