Problems from Waterloo/Alberta Programming Contest 2004-06-12

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Expanding Rods0.00401102921321%6.6Harden
Grid Speed0.042453961415%6.3Harden
Marbles On A Tree0.00264253198039%3.0Mediumen
Three Powers0.00813900180846%2.4Easyen
Work Reduction0.00343232160526%5.7Harden