Problems from Waterloo Programming Contest 2009-02-08

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Colliding Traffic0.01319193232517%3.4Mediumen
Ocean Currents0.17642167847228%5.3Mediumen
Scrolling Sign0.00100144362743%3.1Mediumen
Unique Snowflakes0.02863967110128%4.2Mediumen
Zerg Rush!!!0.2425611231512%7.5Harden