Problems from KTH CSC Popup spring 2013

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Fenwick Tree 6351 1658 26% 0.67 948 705 74% 4.6
Linear Recurrences 498 261 52% 0.06 102 90 88% 5.3
Union-Find 10627 3292 31% 0.04 1515 1105 73% 4.9