____________
|  elevator  |
| .~.~.~.~.  |
| {1}o {2}o  |
| {3}o {4}o  |
| {4}o {5}o  |
| {6}o {7]o  |
| {8}o {9}o  |
|{10}o {11}o |
|{12}o {13}o |
|{13}o {14}o |
|{15}o {16}o |
|{16}o {17}o |
|{18}o {19}o |
|{19}o {20}o |
|{21}o {*L}o |
| {>|<}{<|>} |
|    {o}     |
| .~.~.~.~.  |
|————————————|

There are 21 floors to the building, according to the elevator buttons. Press the button for the 5th floor.