Problems from CTU Open 2005

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
All Friends0.00685140526219%8.7Harden
Divisors0.00133253369227%5.8Harden
Emag Eht Htiw Em Pleh0.00287178295454%1.9Easyen
Failing Roads0.04384873743%7.0Harden
Help Me With The Game0.004352529112244%2.9Mediumen