Problems from Waterloo Programming Contest 2006-09-30

	Add	Remove

Name	Fastest	Shortest	Total	Acc.	Ratio	Difficulty	Languages
Life Forms	0.07	1156	1776	388	22%	7.2Hard	en
Rectilinear Polygon	0.01	603	176	67	38%	7.1Hard	en
Rinse	0.00	456	274	46	17%	8.5Hard	en
Semi-prime H-numbers	0.00	213	1245	411	33%	5.0Medium	en
Tautology	0.00	190	2223	949	43%	2.7Easy	en