Problems from Waterloo Programming Contest 2006-09-30

	Add	Remove

Name	Fastest	Shortest	Total	Acc.	Ratio	Difficulty	Languages
Life Forms	0.07	1156	1813	396	22%	7.1Hard	en
Rectilinear Polygon	0.01	603	180	67	37%	7.1Hard	en
Rinse	0.00	456	278	46	17%	8.4Hard	en
Semi-prime H-numbers	0.00	213	1269	420	33%	5.0Medium	en
Tautology	0.00	190	2258	963	43%	2.7Easy	en