Problems from CTU Open 2010

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Arbitrage?0.014574562125327%3.8Mediumen
Bus Clock Display0.02299768710%7.7Harden
Bus Schedules0.092415921213%8.4Harden
God Save the i-th Queen0.07433100835635%5.5Harden
Hack Around the Lock0.0614451532516%7.7Harden
Measuring Problem Difficulty0.043951626238%6.4Harden
The Easiest Problem Is This One0.00513905763055%1.6Easyen