Problems from Central Europe Regional Contest (CERC) 2012

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Chemist's vows0.00433176050529%3.1Mediumen
Conservation0.16302301591130%4.8Mediumen
Darts0.03932319114749%2.1Easyen
Graphic Madness0.0118071002222%7.4Harden
Jewel Heist0.8415612115727%5.9Harden
Kingdoms0.297123488224%7.0Harden
Non-boring sequences0.0758587925729%6.6Harden
The Dragon and the Knights0.177393065819%5.3Mediumen
Who Wants to Live Forever?0.014464264110%8.6Harden
Word Equations0.05100046910322%7.7Harden