Problems from IDI Open 2015

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
A Feast For Cats	1822	634	35%	0.00	428	360	84%	4.3
Blackboard Numbers	1596	370	23%	0.00	308	238	77%	5.2
Cat And Mouse	520	92	18%	0.00	126	56	44%	8.2
Friday the 13th	2064	1040	50%	0.00	1023	943	92%	1.8
Help Roomba Find Himself	94	36	38%	0.01	47	34	72%	6.0
I Hate The Number Nine	1723	727	42%	0.00	672	579	86%	3.3
NTNU Orienteering	267	78	29%	0.05	62	56	90%	5.2
Simon Says	6392	2223	35%	0.00	2305	2030	88%	2.1
Smart Phone	763	348	46%	0.00	368	326	89%	2.7
Sneaky Snowninjas	199	47	24%	0.24	39	18	46%	9.1