Problems from Waterloo Programming Contest 2001-06-02

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Ones 3400 1000 29% 0.00 861 664 77% 4.6
Sumsets 2931 547 19% 0.27 228 134 59% 8.3
Zipf's Law 1630 401 25% 0.01 295 220 75% 5.7