Problems from Waterloo Programming Contest 2003-09-20

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Basic Remains	895	425	47%	0.01	373	335	90%	3.3
Combination Lock	2455	1078	44%	0.00	1039	905	87%	2.5
Genealogical Research	829	139	17%	0.00	139	110	79%	3.7
Russian Dolls	1279	37	3%	0.00	71	28	39%	8.8
Treasure Map	211	87	41%	0.01	72	59	82%	6.1