Problems from IDI Open 2015

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
A Feast For Cats	3927	1461	37%	0.00	1078	931	86%	3.3
Blackboard Numbers	2592	699	27%	0.00	502	416	83%	4.3
Cat And Mouse	675	122	18%	0.00	153	78	51%	7.5
Friday the 13th	3284	1732	53%	0.00	1682	1570	93%	1.8
Help Roomba Find Himself	165	59	36%	0.00	70	52	74%	6.7
I Hate The Number Nine	2617	1082	41%	0.00	1010	872	86%	3.2
NTNU Orienteering	1060	262	25%	0.03	178	158	89%	4.5
Simon Says	8883	3129	35%	0.00	3218	2825	88%	2.4
Smart Phone	999	481	48%	0.00	494	445	90%	2.6
Sneaky Snowninjas	298	55	18%	0.24	52	26	50%	8.7