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

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Counting Stars	12272	3537	29%	0.00	2650	2235	84%	3.7
Heliocentric	2730	1580	58%	0.00	1405	1320	94%	1.8
Limited Correspondence	942	202	21%	0.03	118	75	64%	7.4
Mandelbrot	3364	1017	30%	0.00	922	804	87%	3.0
Matrix Inverse	3454	1248	36%	0.00	1226	1039	85%	2.9
Polish Notation	1735	500	29%	0.00	407	335	82%	3.3
Preludes	2283	1221	53%	0.00	1185	1112	94%	1.8
Prime Spiral	701	297	42%	0.00	220	196	89%	3.4
Reversing Roads	2579	600	23%	0.00	523	409	78%	4.6
Sierpiński Circumference	3050	1163	38%	0.00	1013	907	90%	2.6
Statistics	11395	4924	43%	0.00	4653	4283	92%	2.2
Towers of Powers 2: Power Harder	7509	343	5%	0.00	765	48	6%	9.5