fork(1) download

copy

vector< string > arr;
 int dx[] = { 1 , -1 , 0, 0 };
    int dy[] = { 0 , 0, 1 , -1};
int vis[1000][1000];
int n , m;
bool check( int x , int y  )
{
    if( x >= 0 && x < n && y >=0 && y < m && vis[x][y] == 0 && arr[x][y] == 'X' )
        return true;
    return false;
}
 
void dfs( int x, int y )
{
    vis[x][y] = 1;
    for( int i = 0 ; i < 4 ; i++)
    {
        int xx = x + dx[i];
        int yy = y + dy[i];
        if( check(xx,yy) )
        {
            dfs( xx,yy  );
        }
    }
}
 
int black(vector<string> &A) {
 
    int cnt = 0;
    arr = A;
    n = A.size();
    m = A[0].length();
    memset( vis, 0, sizeof(vis) );
    for( int i = 0 ; i < A.size() ; i++ )
    {
        for( int j = 0 ; j < A[i].length() ; j++ )
        {
            if( check(i,j) )
            {
                dfs(i,j);
                ++cnt;
            }
        }
    }
 
    return cnt;
}
 

prog.cpp:1:1: error: 'vector' does not name a type
 vector< string > arr;
 ^
prog.cpp: In function 'bool check(int, int)':
prog.cpp:8:64: error: 'arr' was not declared in this scope
     if( x >= 0 && x < n && y >=0 && y < m && vis[x][y] == 0 && arr[x][y] == 'X' )
                                                                ^
prog.cpp: At global scope:
prog.cpp:27:11: error: 'vector' was not declared in this scope
 int black(vector<string> &A) {
           ^
prog.cpp:27:18: error: 'string' was not declared in this scope
 int black(vector<string> &A) {
                  ^
prog.cpp:27:27: error: 'A' was not declared in this scope
 int black(vector<string> &A) {
                           ^
prog.cpp:27:30: error: expected ',' or ';' before '{' token
 int black(vector<string> &A) {
                              ^

Standard output is empty