Problems from Central Europe Regional Contest (CERC) 2012

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Chemist's vows 690 191 28% 0.00 141 119 84% 4.0
Conservation 790 288 36% 0.27 171 149 87% 4.8
Darts 1435 708 49% 0.03 539 471 87% 2.5
Graphic Madness 68 12 18% 0.01 16 12 75% 7.4
Jewel Heist 103 32 31% 0.84 34 27 79% 6.6
Kingdoms 302 71 24% 0.29 84 49 58% 7.5
Non-boring sequences 681 208 31% 0.07 129 85 66% 6.4
The Dragon and the Knights 137 42 31% 0.20 40 36 90% 4.8
Who Wants to Live Forever? 251 30 12% 0.01 55 27 49% 7.1
Word Equations 131 28 21% 0.05 39 25 64% 7.5