Problems from Google Code Jam 2010 Online Competition Africa

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Get to Work0.00343130360346%2.7Easyen
Odd Man Out0.00517265940854%1.8Easyen
Polygraph0.018102413715%7.8Harden
Qualification Round0.003111633924%6.3Harden