Problems from Waterloo Programming Contest 2006-09-30

	Add	Remove

Name	Fastest	Shortest	Authors	Full Solves	Ratio	Difficulty	Languages
Life Forms	0.07	1156	292	174	60%	7.0Hard	en
Rectilinear Polygon	0.01	603	71	50	70%	5.9Hard	en
Rinse	0.00	456	49	27	55%	8.5Hard	en
Semi-prime H-numbers	0.00	213	405	330	81%	4.7Medium	en
Tautology	0.00	175	969	896	92%	2.2Easy	en