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

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Counting Stars	4766	1652	35%	0.00	1431	1236	86%	2.4
Heliocentric	1661	968	58%	0.00	876	818	93%	1.8
Limited Correspondence	600	152	25%	0.03	68	45	66%	6.1
Mandelbrot	1773	585	33%	0.00	563	493	88%	3.0
Matrix Inverse	2163	764	35%	0.00	755	625	83%	3.2
Polish Notation	468	155	33%	0.00	155	131	85%	3.2
Preludes	1391	752	54%	0.00	738	687	93%	1.8
Prime Spiral	455	180	40%	0.00	131	114	87%	3.9
Reversing Roads	939	238	25%	0.00	228	178	78%	5.1
Sierpiński Circumference	2037	776	38%	0.00	677	610	90%	2.4
Statistics	5660	2507	44%	0.00	2357	2184	93%	1.7
Towers of Powers 2: Power Harder	5737	268	5%	0.00	547	30	5%	9.5