Problems from Waterloo/Alberta Programming Contest 2004-06-12

	Add	Remove

Name	Fastest	Shortest	Authors	Full Solves	Ratio	Difficulty	Languages
Expanding Rods	0.00	297	196	147	75%	5.8Hard	en
Grid Speed	0.04	2453	20	9	45%	7.2Hard	en
Marbles On A Tree	0.00	246	837	744	89%	3.1Medium	en
Three Powers	0.00	81	1601	1457	91%	2.3Easy	en
Work Reduction	0.00	343	529	388	73%	5.2Medium	en