Problems from Programmeringsolympiadens onlinekval 2013

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Samla stenar	510	303	59%	0.01	70	64	91%	4.8 - 5.3
Wikipediaspråk	134	84	63%	0.21	46	43	93%	5.4 - 5.7
Lagtävling	208	146	70%	0.00	74	70	95%	5.2 - 6.4
Järnvägen	89	71	80%	0.00	41	40	98%	5.7 - 6.0