Problems from CTU Open 2010

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Arbitrage? 2822 707 25% 0.02 502 413 82% 4.0
Bus Clock Display 48 8 17% 0.02 20 8 40% 8.1
Bus Schedules 35 7 20% 0.16 20 7 35% 8.7
God Save the i-th Queen 771 253 33% 0.28 128 89 70% 6.7
Hack Around the Lock 96 16 17% 0.06 25 12 48% 8.4
Measuring Problem Difficulty 77 42 55% 0.04 51 39 76% 7.1
The Easiest Problem Is This One 11084 6147 55% 0.00 5596 5296 95% 1.6