Problems from Google Code Jam 2009 Qualification Round

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Watersheds 92 50 54% 0.00 50 44 88% 4.1
Welcome to Code Jam (Easy) 1564 839 54% 0.00 724 673 93% 2.1
Welcome to Code Jam (Hard) 1099 446 41% 0.00 438 357 82% 4.8