Problems from Nordic Collegiate Programming Contest (NCPC) 2015

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Adjoin the Networks	1441	387	27%	0.00	339	264	78%	5.7
Bell Ringing	482	232	48%	0.00	211	174	82%	4.7
Cryptographer's Conundrum	7713	4773	62%	0.00	4302	4154	97%	1.3
Disastrous Downtime	3653	1172	32%	0.00	975	797	82%	3.3
Entertainment Box	1141	292	26%	0.04	286	222	78%	6.3
Floppy Music	320	142	44%	0.00	141	125	89%	5.5
Goblin Garden Guards	2833	579	20%	0.05	412	286	69%	6.2
Hero Power	63	26	41%	0.03	34	22	65%	7.7
iCar	119	12	10%	0.01	34	10	29%	9.1
Just a Quiz	188	59	31%	0.05	66	48	73%	5.5