Problems from Waterloo Programming Contest 1999-01-31

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Doublets 601 99 16% 0.04 77 37 48% 8.6
Factovisors 3759 599 16% 0.00 556 375 67% 6.3
The Trip 720 165 23% 0.00 143 106 74% 5.5