Problems from Central Europe Regional Contest (CERC) 2012

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Chemist's vows 814 216 27% 0.00 166 142 86% 4.1
Conservation 1152 420 36% 0.27 277 241 87% 4.4
Darts 1883 953 51% 0.03 731 651 89% 2.4
Graphic Madness 75 14 19% 0.01 20 14 70% 7.9
Jewel Heist 121 37 31% 0.84 40 30 75% 7.4
Kingdoms 325 74 23% 0.29 92 51 55% 8.1
Non-boring sequences 734 227 31% 0.07 153 103 67% 6.4
The Dragon and the Knights 194 50 26% 0.19 47 43 91% 4.8
Who Wants to Live Forever? 274 32 12% 0.01 62 29 47% 8.5
Word Equations 193 44 23% 0.05 58 35 60% 7.8