Problems from Waterloo Programming Contest 2007-09-23

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Carpool0.00109660111419%6.7Harden
Conformity0.006214062639645%1.6Easyen
Exchange Rates0.0012697328029%4.2Mediumen
Pseudoprime numbers0.00913008115738%3.5Mediumen