Problems from Google Code Jam 2010 Online Competition Africa

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Get to Work0.00343141161744%2.8Mediumen
Odd Man Out0.00517546951754%1.7Easyen
Polygraph0.018102543715%7.8Harden
Qualification Round0.003111784022%6.5Harden