#include using namespace std; char board[100][100]; int n, m; int dots = 0; int walk(int i, int j) { int dotsInArea = 0; if( board[i][j] == 'X') return 0; if( board[i][j] == '.') { dots--; dotsInArea = 1; } if( board[i][j]==' ' || board[i][j]=='.') { board[i][j] = 'X'; if( i > 0) dotsInArea += walk( i-1, j); if( i < n-1) dotsInArea += walk( i+1, j); if( j > 0) dotsInArea += walk( i, j-1); if( j < m-1) dotsInArea += walk( i, j+1); } return dotsInArea > 0?1:0; } int main() { cin>> n>> m; string line; getline( cin, line); for( int i = 0; i