A robotic vacuum cleaner is learning to clean a room more efficiently. It uses a camera to see the room's layout and the location of dirt. When it successfully sucks up a patch of dirt, its internal 'dirt collected' counter increases. If it bumps into a wall, the counter decreases slightly to discourage this behavior. After each movement, it re-evaluates the room with its camera. In this learning framework, what best represents the 'reward'?

A learning agent interacts with its environment in a continuous cycle. Arrange the following events into the correct logical sequence for a single step of this interaction.

Troubleshooting a Game-Playing AI