You are locked in a 50'x50'x50' room which is on 100' stilts. There is a small window near the floor on one side (too far from the stilts to reach), with a small hook embedded in the floor beside it. In the centre of the room hanging from the ceiling are two 50' ropes. You have no tools except a sharp knife, but are a good rope climber. How do you get out of the room?