Problems from International Collegiate Programming Contest (ACM-ICPC) Dress Rehearsal 2012

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Counting Stars	7482	2409	32%	0.00	1976	1704	86%	2.8
Heliocentric	2371	1384	58%	0.00	1214	1143	94%	1.7
Limited Correspondence	823	182	22%	0.03	96	62	65%	7.2
Mandelbrot	2801	847	30%	0.00	771	670	87%	3.1
Matrix Inverse	2869	1028	36%	0.00	1015	857	84%	3.0
Polish Notation	1345	387	29%	0.00	308	251	81%	3.4
Preludes	1881	1016	54%	0.00	984	926	94%	1.8
Prime Spiral	618	249	40%	0.00	189	167	88%	3.6
Reversing Roads	1797	424	24%	0.00	380	313	82%	4.4
Sierpiński Circumference	2705	1007	37%	0.00	895	797	89%	2.7
Statistics	9410	4115	44%	0.00	3858	3581	93%	1.8
Towers of Powers 2: Power Harder	7290	338	5%	0.00	725	44	6%	9.5