private static int statistics(){
		
		int count = 0;;
		
		for(int i = 0; i < grid.length; i++){
			for(int j = 0; j < grid[0].length; j++){

				if(grid[i][j].equals("+")){
					
					count++;
					coordinates.add("[" + j + ", " + i + "]");
				}
			}
		}
		
		return count;
	}