Problems from CTU Open 2010

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Arbitrage?0.014574154113327%3.8Mediumen
Bus Clock Display0.02299733721%7.8Harden
Bus Schedules0.092415551120%8.2Harden
God Save the i-th Queen0.0754290430734%5.9Harden
Hack Around the Lock0.0614451182420%7.9Harden
Measuring Problem Difficulty0.043951096055%6.6Harden
The Easiest Problem Is This One0.00512922710955%1.6Easyen