Problems from Central Europe Regional Contest (CERC) 2012

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Chemist's vows0.00433188053028%3.0Mediumen
Conservation0.11302312694830%4.8Mediumen
Darts0.02932463121249%2.1Easyen
Graphic Madness0.0118071222218%7.4Harden
Jewel Heist0.7514892466526%6.3Harden
Kingdoms0.297123768422%7.0Harden
Non-boring sequences0.0758594626628%6.6Harden
The Dragon and the Knights0.177393376118%6.1Harden
Who Wants to Live Forever?0.014004995210%8.2Harden
Word Equations0.05100053110720%7.5Harden