Problems from Google Code Jam 2010 Online Competition Africa

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Get to Work 486 271 56% 0.00 243 227 93% 2.2
Odd Man Out 7353 4357 59% 0.00 3847 3668 95% 1.4
Polygraph 50 10 20% 0.01 12 10 83% 6.6
Qualification Round 50 19 38% 0.00 19 15 79% 5.9