<human>:  What is the most efficient way to paint a room?
<bot>: The most efficient way to paint a room is to start by preparing the walls and ceiling by cleaning them, patching any holes, and sanding any spots that need to be smoothed. Next, use a quality primer and paint to cover the walls, followed by two coats of paint. Finally, use painter's tape and a brush to create crisp, neat edges along trim and baseboards.