Problems from Waterloo Programming Contest 2006-09-30

	Add	Remove

Name	Fastest	Shortest	Authors	Full Solves	Ratio	Difficulty	Languages
Life Forms	0.07	1156	293	174	59%	7.0Hard	en
Rectilinear Polygon	0.01	603	66	45	68%	6.1Hard	en
Rinse	0.00	456	50	28	56%	8.1Hard	en
Semi-prime H-numbers	0.00	213	402	328	82%	4.7Medium	en
Tautology	0.00	175	835	763	91%	2.5Easy	en