Problems from Nordic Collegiate Programming Contest (NCPC) 2015

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Adjoin the Networks	2991	758	25%	0.00	663	527	79%	5.9
Bell Ringing	723	367	51%	0.00	335	281	84%	4.5
Cryptographer's Conundrum	13563	8408	62%	0.00	7572	7309	97%	1.4
Disastrous Downtime	7615	2578	34%	0.00	2034	1737	85%	2.9
Entertainment Box	2117	563	27%	0.03	504	404	80%	5.9
Floppy Music	510	236	46%	0.00	227	201	89%	5.3
Goblin Garden Guards	4087	876	21%	0.05	596	439	74%	6.0
Hero Power	120	42	35%	0.03	52	35	67%	7.2
iCar	160	20	12%	0.01	52	17	33%	9.1
Just a Quiz	303	95	31%	0.05	107	78	73%	6.5