Problems from CTU Open 2010

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Arbitrage?0.014574472123528%3.9Mediumen
Bus Clock Display0.02299751714%7.7Harden
Bus Schedules0.092415741115%8.5Harden
God Save the i-th Queen0.0743397034736%5.8Harden
Hack Around the Lock0.0614451352418%7.8Harden
Measuring Problem Difficulty0.043951456243%6.4Harden
The Easiest Problem Is This One0.00513754753555%1.6Easyen