Problems from Waterloo Programming Contest 2003-09-20

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Basic Remains	308	128	42%	0.02	116	103	89%	3.5
Combination Lock	1031	479	46%	0.00	481	404	84%	2.6
Genealogical Research	448	79	18%	0.00	77	60	78%	2.9
Russian Dolls	793	15	2%	0.01	22	12	55%	6.6
Treasure Map	105	39	37%	0.01	37	29	78%	5.2