Problems from Waterloo Programming Contest 2001-06-02

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Ones 4148 1268 31% 0.00 1065 838 79% 4.3
Sumsets 3363 583 17% 0.27 275 159 58% 8.2
Zipf's Law 2300 535 23% 0.01 399 288 72% 5.9