Problems from KTH CSC Popup spring 2013

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Fenwick Tree 7467 1965 26% 0.67 1113 842 76% 4.6
Linear Recurrences 874 381 44% 0.06 139 118 85% 4.6
Union-Find 12344 3935 32% 0.04 1750 1305 75% 5.1