Problems from Waterloo Programming Contest 2009-02-08

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Colliding Traffic0.01319214638518%3.7Mediumen
Ocean Currents0.17642178650528%5.4Mediumen
Scrolling Sign0.00100151466244%3.1Mediumen
Unique Snowflakes0.02864266119828%3.9Mediumen
Zerg Rush!!!0.2425611701710%8.4Harden