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I don't really care if a robot uses a lot of time. The time allowed is already limited by the Robocode engine, and if Robocode provides the time, I don't see anything wrong with using as much of that time as you want. Of course, it is nicer when a robot runs quickly. Regardless, it is tempting to work on a way to measure the CPU usage of all the robots in the Rumble, as it would be very interesting to see.