Problems from KTH CSC Popup spring 2013

	Add	Remove

Name	Fastest	Shortest	Authors	Full Solves	Ratio	Difficulty	Languages
Fenwick Tree	0.57	202	2724	2230	82%	3.3Medium	en
Linear Recurrences	0.01	476	344	291	85%	4.4Medium	en
Union-Find	0.04	201	4085	3176	78%	2.8Medium	en