task: Под дорожкой есть колодцы разной глубины — закрась в них все клетки. Колодцы каждый раз другие.

+---+---+---+---+---+---+---+---+---+
| >                                 |
+---+---+   +---+   +   +---+   +---+
|       | . |   | . | . |   | . |   |
+   +   +   +   +   +---+   +   +   +
|       | . |   | . |       | . |   |
+   +   +---+   +   +   +   +   +   +
|               | . |       | . |   |
+   +   +   +   +   +   +   +---+   +
|               | . |               |
+---+---+---+---+---+---+---+---+---+

+---+---+---+---+---+---+---+---+---+---+
| >                                     |
+---+   +---+   +---+---+   +---+---+   +
|   | . |   | . |       | . |       | . |
+   +   +   +   +   +   +   +   +   +   +
|   | . |   | . |       | . |       | . |
+   +   +   +   +   +   +---+   +   +   +
|   | . |   | . |                   | . |
+   +---+   +   +   +   +   +   +   +   +
|           | . |                   | . |
+   +   +   +   +   +   +   +   +   +---+
|           | . |                       |
+---+---+---+---+---+---+---+---+---+---+

+---+---+---+---+---+---+---+---+
| >                             |
+---+---+   +   +---+   +---+   +
|       | . | . |   | . |   | . |
+   +   +   +   +   +---+   +   +
|       | . | . |           | . |
+   +   +   +---+   +   +   +   +
|       | . |               | . |
+   +   +   +   +   +   +   +---+
|       | . |                   |
+---+---+---+---+---+---+---+---+
