25
15
+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
|   |       |   |   |           |       |       |           |           |       |   |           |   |
+   +---+   +   +   +   +---+---+   +---+   +---+   +---+---+   +   +---+   +---+   +---+   +   +   +
|   |   |           |           |           |   |           |   |               |   |   |   |       |
+   +   +   +---+---+   +---+   +   +   +---+   +   +---+---+   +---+---+---+   +   +   +   +---+   +
|       |   |               |   |   |       |                           |   |       |       |   |   |
+---+   +   +   +---+---+---+---+   +---+   +   +   +   +---+---+---+---+   +   +   +---+   +   +   +
|   |                                   |       |   |               |           |   |           |   |
+   +   +---+   +---+---+---+---+---+   +---+   +   +---+---+---+   +---+---+   +---+   +---+---+   +
|           |               |   |   |       |   |   |           |       |       |           |   |   |
+   +---+   +---+---+   +---+   +   +---+---+   +   +   +---+   +---+---+---+---+   +---+---+   +   +
|       |           |       |   |       |   |   |   |   |   |       |       |                   |   |
+---+   +---+   +---+   +---+   +   +---+   +---+   +   +   +---+   +---+   +   +---+---+   +---+   +
|   |       |   |   |       |           |   |           |       |       |   |           |       |   |
+   +---+   +---+   +   +   +   +   +   +   +   +---+---+---+   +---+---+   +---+---+   +---+---+   +
|       |   |   |       |       |   |   |   |       |       |                                   |   |
+---+   +   +   +---+---+   +---+   +---+   +---+   +---+   +---+   +---+---+---+---+   +---+---+---+
|                       |       |           |   |       |           |           |   |               |
+   +   +---+   +---+---+   +   +   +---+   +   +   +   +---+   +   +   +---+---+   +   +---+---+   +
|   |       |       |       |   |       |       |   |       |   |   |               |       |   |   |
+   +---+   +---+---+   +---+---+   +---+---+---+---+---+---+   +---+   +---+   +---+   +   +   +   +
|       |           |       |                           |               |       |       |       |   |
+---+   +   +---+---+---+---+---+---+   +---+---+---+---+---+   +   +---+   +   +---+   +---+---+---+
|   |   |       |           |       |   |                       |       |   |       |           |   |
+   +   +   +   +   +   +   +---+   +   +   +---+   +---+---+---+---+---+   +---+   +   +---+---+   +
|       |   |       |   |   |               |   |       |       |               |   |   |       |   |
+   +   +---+---+   +---+   +---+---+---+---+   +---+   +   +---+---+   +---+---+---+---+   +   +   +
|   |       |   |       |                   |   |   |   |   |       |           |   |       |   |   |
+   +   +---+   +   +   +---+   +   +---+   +   +   +   +   +   +   +   +---+---+   +   +   +   +   +
|   |           |   |   |       |       |       |               |   |                   |   |       |
+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
