Problems from CTU Open 2010

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Arbitrage?0.014574500123828%4.0Mediumen
Bus Clock Display0.02299755713%7.7Harden
Bus Schedules0.092415781114%8.6Harden
God Save the i-th Queen0.0743398334735%5.8Harden
Hack Around the Lock0.0614451392417%7.9Harden
Measuring Problem Difficulty0.043951496242%6.4Harden
The Easiest Problem Is This One0.00513793755955%1.6Easyen