Problems from IDI Open 2015

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
A Feast For Cats	1761	609	35%	0.00	404	339	84%	4.3
Blackboard Numbers	1537	362	24%	0.00	297	231	78%	5.1
Cat And Mouse	507	91	18%	0.00	123	55	45%	8.1
Friday the 13th	1940	978	50%	0.00	964	888	92%	1.8
Help Roomba Find Himself	93	36	39%	0.01	46	34	74%	5.2
I Hate The Number Nine	1606	680	42%	0.00	621	537	86%	3.2
NTNU Orienteering	254	74	29%	0.05	59	53	90%	5.4
Simon Says	5955	2079	35%	0.00	2163	1895	88%	2.3
Smart Phone	649	307	47%	0.00	333	294	88%	2.8
Sneaky Snowninjas	188	46	24%	0.24	36	17	47%	8.8