Problems from Google Code Jam 2010 Online Competition Africa

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Get to Work 514 290 56% 0.00 263 245 93% 2.2
Odd Man Out 8342 4891 59% 0.00 4331 4126 95% 1.4
Polygraph 50 10 20% 0.01 12 10 83% 6.6
Qualification Round 52 20 38% 0.00 20 16 80% 5.9