Problems from Waterloo Programming Contest 2009-06-13

Name	Fastest	Shortest	Total	Acc.	Ratio	Difficulty	Languages
Convex Hull	0.03	486	1167	268	23%	7.0Hard	en
Fire!	0.01	845	3596	828	23%	5.6Hard	en
Nice Prefixes	0.02	1786	63	13	21%	8.8Hard	en
Slalom 2	0.10	595	836	155	19%	6.0Hard	en
Tic Tac Toe	0.01	1174	1438	94	7%	9.1Hard	en