Problems from Waterloo Programming Contest 2001-06-02

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Ones 4045 1237 31% 0.00 1033 808 78% 4.3
Sumsets 3187 573 18% 0.27 247 149 60% 8.1
Zipf's Law 2235 514 23% 0.01 382 277 73% 5.9