robot .....\.classpath .....\.project .....\input.txt .....\robot .....\.....\Plain.class .....\.....\Plain.java .....\.....\Roam.class .....\.....\Roam.java .....\.....\Robot.class .....\.....\Robot.java .....\.....\Work.class .....\.....\Work.java robots ......\.classpath ......\.project ......\input.txt ......\robots ......\......\Robots.class ......\......\Robots.java