Problems from CTU Open 2005

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
All Friends0.00685136925419%8.6Harden
Divisors0.00133227864728%5.3Mediumen
Emag Eht Htiw Em Pleh0.00287168491154%1.8Easyen
Failing Roads0.04408803544%7.1Harden
Help Me With The Game0.004352411106644%2.9Mediumen