Five for week 06

Oct 17, 2011, 11:00:00 AM — Oct 22, 2011, 11:02:53 PM
Duration 5 days
By best solution
Participant's result will be calculated as sum of all passed tests. If participant submitted multiple solutions, the one which passes most will be taken.
Open competition
Everyone registered on the website will automatically participate in the competition

Geometry. The convex hull