Problems from CTU Open 2010

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Arbitrage? 1857 388 21% 0.02 289 235 81% 3.6
Bus Clock Display 42 7 17% 0.02 15 7 47% 7.8
Bus Schedules 21 6 29% 0.16 11 6 55% 7.3
God Save the i-th Queen 676 229 34% 0.28 106 74 70% 5.8
Hack Around the Lock 86 14 16% 0.06 19 10 53% 8.0
Measuring Problem Difficulty 41 24 59% 0.04 27 22 81% 6.5
The Easiest Problem Is This One 7406 4128 56% 0.00 3754 3578 95% 1.5