50
30
+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
|               |   |   |       |   |       |               |           |                                                   |           |           |       |               |       |                   |
+   +   +---+   +   +   +---+   +   +   +---+   +---+   +   +   +---+   +   +   +---+---+---+---+   +---+   +   +   +---+   +   +---+   +   +   +---+   +   +---+   +---+   +   +   +---+   +   +---+---+
|   |       |       |               |               |   |           |       |       |       |   |       |   |   |   |   |   |   |           |   |       |           |       |   |           |   |       |
+---+---+   +---+---+---+---+---+   +   +---+---+   +---+---+---+   +---+---+---+---+   +---+   +---+---+---+---+---+   +---+   +---+---+---+   +   +---+   +---+   +   +---+---+   +---+---+---+---+   +
|                           |   |   |   |   |                   |                           |               |   |       |   |   |       |   |   |       |   |   |   |       |       |   |               |
+   +---+---+---+---+---+   +   +   +---+   +   +   +---+---+---+   +---+---+---+   +---+   +   +   +---+---+   +---+   +   +   +   +   +   +   +   +---+---+   +---+---+---+   +   +   +---+   +   +---+
|                       |   |       |       |   |   |                       |   |   |   |       |           |           |       |   |   |   |   |       |                       |   |       |   |   |   |
+---+   +---+---+---+   +   +   +---+---+   +   +---+   +---+---+   +   +   +   +---+   +---+---+   +---+   +---+---+   +---+   +   +   +   +---+   +---+   +---+---+---+   +---+---+   +---+   +---+   +
|               |   |   |                           |   |       |   |   |                       |       |   |           |   |       |                   |       |       |                           |   |
+   +---+   +---+   +   +   +   +---+---+   +   +---+---+   +   +   +   +---+---+   +---+---+   +---+---+---+---+---+   +   +   +---+---+---+---+   +---+---+   +   +   +   +---+---+---+---+---+   +   +
|       |           |   |   |       |       |           |   |   |   |   |       |           |                   |                           |       |               |   |   |                   |       |
+   +---+   +---+---+   +   +---+---+---+---+---+---+---+   +---+   +---+---+   +---+---+   +---+---+   +---+---+---+   +---+---+---+---+---+---+---+   +---+---+---+   +---+   +---+---+---+---+---+   +
|   |   |   |       |   |           |                       |               |           |           |   |           |       |           |               |   |       |                       |   |       |
+   +   +---+   +---+---+   +---+---+   +---+   +   +---+---+---+---+---+   +---+   +---+   +---+   +   +   +---+   +   +---+   +---+   +   +   +---+   +   +   +---+---+   +---+   +   +   +   +---+   +
|       |   |   |           |   |       |       |                   |   |       |           |   |   |   |   |           |           |       |       |               |           |   |   |           |   |
+   +---+   +   +   +---+---+   +   +   +---+---+   +---+---+---+---+   +---+   +---+---+   +   +---+---+---+   +---+   +   +---+---+---+   +---+---+---+---+---+---+---+---+---+---+---+   +---+   +---+
|           |       |               |   |   |           |               |   |   |       |           |       |       |       |           |   |               |           |   |           |       |       |
+   +---+   +---+---+   +---+   +---+---+   +---+---+---+   +   +---+   +   +---+   +---+---+---+---+---+   +   +---+---+---+---+   +---+   +---+   +---+---+---+   +   +   +   +---+   +---+   +---+   +
|       |               |   |   |   |       |               |   |   |   |           |               |       |       |           |   |   |       |       |           |           |       |   |   |   |   |
+---+---+---+---+---+   +   +   +   +   +---+   +---+---+---+---+   +---+   +---+---+   +   +---+---+   +---+---+   +   +---+---+   +   +---+   +---+   +   +---+---+---+   +   +---+---+   +   +   +---+
|                       |   |           |                       |           |           |                       |       |       |       |   |           |               |   |   |   |   |   |   |       |
+   +---+   +   +---+   +   +---+   +   +   +---+---+   +---+---+---+   +---+   +   +---+---+---+---+---+---+   +   +---+   +   +   +---+   +---+---+---+   +---+   +   +---+---+   +   +   +   +---+   +
|       |   |   |   |   |       |   |       |       |   |           |   |       |       |       |                           |                   |       |       |   |   |       |   |   |   |       |   |
+   +---+   +   +   +---+   +   +   +---+   +   +---+---+---+---+   +   +   +---+   +---+   +   +---+---+---+---+   +   +---+---+   +---+---+---+   +   +   +---+---+---+   +---+   +   +   +---+---+   +
|       |   |   |   |   |   |       |       |                               |               |   |               |   |           |                   |       |       |               |           |       |
+   +   +---+   +   +   +   +---+---+---+---+---+   +---+   +   +   +   +---+---+   +---+---+   +---+---+---+   +   +---+   +---+   +---+---+---+---+   +---+   +   +---+---+---+   +---+   +   +   +---+
|   |       |   |                                       |   |   |   |   |                   |   |       |   |   |       |       |   |   |           |           |           |           |   |   |   |   |
+   +---+   +---+---+---+   +   +   +---+---+   +---+---+---+---+   +   +   +---+   +---+   +   +   +---+   +   +---+   +   +---+   +   +   +---+---+---+---+---+---+---+---+   +---+---+   +---+   +   +
|       |           |       |   |       |                   |       |   |       |       |   |   |   |                   |       |           |                           |           |   |               |
+---+---+   +---+   +---+   +   +---+---+   +---+---+---+---+---+---+---+---+---+---+---+   +---+   +   +---+---+   +---+---+---+   +   +---+   +---+   +---+---+---+   +---+   +---+   +   +   +   +   +
|               |   |   |   |       |       |           |                           |   |   |   |               |           |   |   |           |   |       |                               |   |   |   |
+---+   +---+---+---+   +   +---+---+---+---+   +---+---+   +   +---+---+   +---+   +   +---+   +---+---+---+   +---+---+---+   +---+   +   +---+   +---+   +---+---+   +---+---+---+   +   +   +---+---+
|   |           |       |   |   |           |       |       |   |   |   |   |   |   |       |       |       |   |       |           |   |           |   |       |   |               |   |   |           |
+   +---+   +---+---+   +   +   +   +---+   +---+   +   +   +---+   +   +---+   +   +   +   +---+   +   +---+   +   +---+   +---+   +---+---+---+   +   +---+---+   +   +---+---+---+   +---+---+---+---+
|   |       |                   |       |       |       |       |       |       |       |   |       |       |   |       |   |   |   |       |   |   |           |       |       |       |               |
+   +---+---+---+   +---+---+---+   +   +---+   +   +   +---+---+   +---+   +---+---+---+---+   +---+---+   +---+---+   +   +   +---+   +   +   +---+   +---+---+---+   +   +   +   +---+   +   +   +---+
|               |       |           |   |           |       |       |       |   |       |       |                   |   |   |       |   |           |   |       |       |   |   |           |   |   |   |
+---+   +   +   +---+   +   +   +---+---+   +---+   +---+---+---+   +   +---+   +   +   +---+   +   +---+---+---+---+   +   +   +---+   +---+---+---+   +   +---+---+---+   +   +---+---+---+---+   +   +
|       |   |       |       |       |   |       |           |       |   |   |       |   |       |   |       |                   |   |       |           |       |       |   |                   |       |
+---+   +   +---+   +   +---+---+   +   +---+   +---+---+---+   +---+   +   +---+---+   +---+   +   +---+   +   +---+---+   +---+   +---+   +   +---+---+   +---+   +   +   +---+   +---+---+   +   +   +
|   |   |   |   |               |           |                       |   |       |   |           |           |           |   |                       |       |       |           |   |           |   |   |
+   +---+   +   +---+---+---+---+   +   +   +---+   +   +---+---+   +   +   +---+   +   +---+---+---+   +---+   +   +---+   +   +   +---+---+---+---+---+   +   +   +---+   +---+   +---+---+---+---+   +
|           |   |       |           |   |       |   |   |               |                                   |   |       |       |       |                   |   |       |   |                   |       |
+   +   +   +   +---+   +   +---+---+---+   +---+   +---+   +---+---+---+   +---+   +   +   +---+---+---+---+   +---+---+   +---+---+---+---+   +---+   +   +   +---+   +---+   +   +---+---+---+   +---+
|   |   |       |       |           |           |       |                   |   |   |   |                   |   |       |       |               |   |   |   |       |   |       |               |       |
+   +---+---+   +   +   +---+   +---+   +   +---+---+---+---+---+   +---+---+   +---+   +---+---+---+   +   +   +---+   +---+   +---+   +---+---+   +   +   +---+   +---+   +---+---+---+---+---+---+---+
|           |   |   |       |   |       |           |       |               |       |   |               |               |   |       |               |   |   |           |               |       |       |
+---+   +---+---+   +   +   +   +---+   +---+   +---+   +   +   +---+---+   +   +   +   +   +---+   +---+---+---+   +---+   +---+   +---+   +   +---+---+   +---+   +   +---+---+---+   +   +---+---+   +
|       |           |   |   |       |       |       |   |           |           |   |   |       |   |       |   |           |               |       |   |       |   |   |           |               |   |
+   +   +   +---+---+   +---+   +   +---+   +---+---+---+---+---+   +   +---+   +   +   +   +   +---+   +   +   +   +---+---+---+---+---+---+---+   +   +   +   +   +   +   +---+---+   +---+---+   +   +
|   |               |   |       |       |               |           |   |   |   |   |   |   |       |   |       |           |           |   |   |       |   |       |       |       |           |       |
+   +---+---+   +---+   +   +---+   +---+---+---+---+---+   +---+   +   +   +   +---+---+---+   +   +   +---+---+---+---+---+   +---+   +   +   +   +---+   +---+---+---+---+   +   +---+---+   +---+   +
|           |   |       |       |   |   |       |           |       |       |   |       |       |           |                       |       |       |           |           |   |   |       |       |   |
+   +---+---+---+   +---+---+   +   +   +   +---+   +---+---+   +---+---+---+   +   +---+   +   +---+---+   +   +   +---+---+---+   +   +---+   +---+---+---+   +   +   +---+---+   +   +   +---+   +   +
|       |       |           |   |   |   |                   |           |       |           |           |       |               |   |   |   |           |           |               |   |   |       |   |
+   +   +   +   +---+   +---+---+---+   +   +   +   +---+---+---+---+---+---+   +---+---+---+---+   +   +---+---+---+   +---+   +   +   +   +---+   +---+---+   +   +---+   +---+---+   +   +   +---+---+
|   |   |   |   |                   |   |   |   |       |       |       |               |       |   |   |   |           |       |   |   |   |   |           |   |       |           |   |       |       |
+---+   +   +   +   +   +---+   +---+   +   +---+---+---+   +   +   +   +---+   +---+   +   +---+   +---+   +   +---+---+   +---+---+   +   +   +   +   +---+   +---+   +---+---+---+   +---+---+   +---+
|       |   |       |       |       |               |       |       |           |           |               |       |       |               |       |       |   |                   |                   |
+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
