Problems from KTH CSC Popup spring 2013

	Add	Remove

Name	Fastest	Shortest	Total	Acc.	Ratio	Difficulty	Languages
Fenwick Tree	0.57	202	14974	4201	28%	3.6Medium	en
Linear Recurrences	0.03	749	1451	553	38%	5.0Medium	en
Union-Find	0.04	202	23146	6782	29%	3.7Medium	en