There is one perfectly flexible but unbreakable rope attached to two posts on a large but unkempt lawn. The posts are 1,000 meters apart and the rope is 1,100 meters long. So there is some slack in the rope.
A randomower is a driverless lawn-mower that moves randomly and is able to change direction by an arbitrary angle at any time. Fortunately, it can be clipped to the rope so it will not wander off too far. You are trying to use this random lawnmower to cut at least part of the grass between the posts. Let the rope's zero point be at post A and its end point (1,100 meters away along the rope) at post B.
No entries found
Log in to Read the Full Article
Sign in using your ACM Web Account username and password to access premium content if you are an ACM member, Communications subscriber or Digital Library subscriber.
Please select one of the options below for access to premium content and features.
Create a Web Account
If you are already an ACM member, Communications subscriber, or Digital Library subscriber, please set up a web account to access premium content on this site.
Join the ACM
Become a member to take full advantage of ACM's outstanding computing information resources, networking opportunities, and other benefits.
Subscribe to Communications of the ACM Magazine
Get full access to 50+ years of CACM content and receive the print version of the magazine monthly.
Purchase the Article
Non-members can purchase this article or a copy of the magazine in which it appears.