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