Problems from Waterloo Programming Contest 2006-09-30

	Add	Remove

Name	Fastest	Shortest	Authors	Full Solves	Ratio	Difficulty	Languages
Life Forms	0.06	1156	294	175	60%	6.9Hard	en
Rectilinear Polygon	0.01	603	73	52	71%	5.6Hard	en
Rinse	0.00	456	57	32	56%	8.7Hard	en
Semi-prime H-numbers	0.00	213	438	359	82%	4.5Medium	en
Tautology	0.00	175	1002	927	93%	2.2Easy	en