Problems from Nordic Collegiate Programming Contest (NCPC) 2015

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Adjoin the Networks	1428	381	27%	0.00	333	258	77%	5.8
Bell Ringing	472	227	48%	0.00	206	169	82%	4.7
Cryptographer's Conundrum	7359	4558	62%	0.00	4093	3952	97%	1.3
Disastrous Downtime	3479	1117	32%	0.00	932	756	81%	3.4
Entertainment Box	1127	286	25%	0.04	284	220	77%	6.3
Floppy Music	318	141	44%	0.00	140	124	89%	5.5
Goblin Garden Guards	2828	577	20%	0.05	410	284	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