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

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Counting Stars	8871	2855	32%	0.00	2313	1979	86%	3.3
Heliocentric	2675	1556	58%	0.00	1384	1299	94%	1.8
Limited Correspondence	942	202	21%	0.03	118	75	64%	7.2
Mandelbrot	3148	970	31%	0.00	868	760	88%	3.0
Matrix Inverse	3314	1204	36%	0.00	1173	999	85%	2.8
Polish Notation	1710	492	29%	0.00	398	328	82%	3.3
Preludes	2172	1169	54%	0.00	1138	1070	94%	1.8
Prime Spiral	646	273	42%	0.00	208	185	89%	3.4
Reversing Roads	2526	583	23%	0.00	512	400	78%	4.7
Sierpiński Circumference	3031	1154	38%	0.00	1004	901	90%	2.5
Statistics	10964	4752	43%	0.00	4481	4132	92%	2.2
Towers of Powers 2: Power Harder	7445	341	5%	0.00	758	46	6%	9.5