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

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Counting Stars	7013	2268	32%	0.00	1876	1616	86%	3.0
Heliocentric	2257	1309	58%	0.00	1147	1078	94%	1.8
Limited Correspondence	823	182	22%	0.03	96	62	65%	7.0
Mandelbrot	2455	779	32%	0.00	744	648	87%	3.0
Matrix Inverse	2778	1000	36%	0.00	984	830	84%	2.9
Polish Notation	1217	333	27%	0.00	287	234	82%	3.4
Preludes	1780	960	54%	0.00	926	872	94%	1.8
Prime Spiral	592	236	40%	0.00	175	155	89%	3.5
Reversing Roads	1705	416	24%	0.00	369	306	83%	4.4
Sierpiński Circumference	2598	960	37%	0.00	856	759	89%	2.7
Statistics	8446	3673	43%	0.00	3466	3210	93%	1.8
Towers of Powers 2: Power Harder	7201	338	5%	0.00	718	44	6%	9.5