Problems from Waterloo Programming Contest 2009-02-08

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Colliding Traffic0.01319195533117%3.5Mediumen
Ocean Currents0.17642172248428%5.2Mediumen
Scrolling Sign0.00100142962744%3.0Mediumen
Unique Snowflakes0.02864006112528%3.8Mediumen
Zerg Rush!!!0.2433951051413%8.2Harden