Problems from IDI Open 2015

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
A Feast For Cats	2280	814	36%	0.00	559	472	84%	4.0
Blackboard Numbers	2049	484	24%	0.00	367	291	79%	4.8
Cat And Mouse	589	107	18%	0.00	134	66	49%	7.6
Friday the 13th	2319	1191	51%	0.00	1159	1075	93%	1.8
Help Roomba Find Himself	119	44	37%	0.01	58	42	72%	5.3
I Hate The Number Nine	2153	864	40%	0.00	807	692	86%	3.3
NTNU Orienteering	890	223	25%	0.05	142	123	87%	4.5
Simon Says	7112	2459	35%	0.00	2543	2237	88%	2.3
Smart Phone	807	379	47%	0.00	397	355	89%	2.6
Sneaky Snowninjas	245	49	20%	0.24	45	20	44%	9.1