Problems from Google Code Jam 2009 Qualification Round

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Watersheds 77 42 55% 0.00 41 37 90% 3.6
Welcome to Code Jam (Easy) 1391 739 53% 0.00 637 591 93% 2.1
Welcome to Code Jam (Hard) 952 383 40% 0.00 384 312 81% 4.9