Problems from Waterloo Programming Contest 2006-09-30

	Add	Remove

Name	Fastest	Shortest	Authors	Full Solves	Ratio	Difficulty	Languages
Life Forms	0.07	1156	294	175	60%	7.0Hard	en
Rectilinear Polygon	0.01	603	72	50	69%	6.2Hard	en
Rinse	0.00	456	49	27	55%	8.5Hard	en
Semi-prime H-numbers	0.00	213	415	339	82%	4.6Medium	en
Tautology	0.00	175	982	909	93%	2.2Easy	en