Problems from CTU Open 2005

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
All Friends0.00685138226019%8.6Harden
Divisors0.00133242366627%5.7Harden
Emag Eht Htiw Em Pleh0.00287173092854%1.8Easyen
Failing Roads0.04408813644%7.0Harden
Help Me With The Game0.004352467109744%2.8Mediumen