write a program in picobot. rectobs.txt: a program to cover a room that has a single rectangular obstacle whose sides are aligned with the sides of the room. You will find a sample of such a room on the Picobot simulation webpage, but your program must work regardless of the location of the obstacle (it will be tested on a greater variety of rooms than just the one on the webpage). The obstacle can be of any width and height, but you are guaranteed that it will not touch any of the walls of the room.

It is pretty difficult to write a program that handles a concave obstacle (think something like the letter U), and your program probably does not do so. Explain how your rectobs.txt program relies on the fact that the obstacle is rectangular. Write your response in a comment at the beginning of the program.