Problems from IDI Open 2015

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
A Feast For Cats	3444	1302	38%	0.00	948	819	86%	3.4
Blackboard Numbers	2558	680	27%	0.00	485	402	83%	4.2
Cat And Mouse	650	119	18%	0.00	148	75	51%	7.6
Friday the 13th	3073	1628	53%	0.00	1578	1475	93%	1.8
Help Roomba Find Himself	161	58	36%	0.01	69	51	74%	6.4
I Hate The Number Nine	2493	1011	41%	0.00	949	813	86%	3.4
NTNU Orienteering	1034	251	24%	0.05	169	149	88%	4.6
Simon Says	8490	2946	35%	0.00	3039	2661	88%	2.6
Smart Phone	942	453	48%	0.00	465	420	90%	2.6
Sneaky Snowninjas	297	55	19%	0.24	51	26	51%	8.7