Problems from Google Code Jam 2010 Online Competition Africa

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Get to Work0.00343129360046%2.7Easyen
Odd Man Out0.00517145936455%1.8Easyen
Polygraph0.018102293415%7.7Harden
Qualification Round0.003111583925%6.4Harden