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

	Add	Remove

Name	Fastest	Shortest	Authors	Full Solves	Ratio	Difficulty	Languages
Expanding Rods	0.00	257	197	149	76%	5.7Hard	en
Grid Speed	0.04	2453	22	11	50%	6.6Hard	en
Marbles On A Tree	0.00	246	850	756	89%	3.0Medium	en
Three Powers	0.00	81	1667	1520	91%	2.2Easy	en
Work Reduction	0.00	343	544	403	74%	5.0Medium	en