Problems from Southwestern Europe Regional Contest (SWERC) 2013

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Binary Tree 247 62 25% 0.01 65 45 69% 7.2
Decoding the Hallway 73 37 51% 0.00 37 32 86% 5.3
It Can Be Arranged 176 68 39% 0.03 62 51 82% 5.0
Joe is learning to speak 76 39 51% 0.42 31 27 87% 5.8
Mixing Colours 81 27 33% 1.08 19 12 63% 8.0
Odd and Even Zeroes 246 80 33% 0.00 83 60 72% 5.9
Shopping Malls 590 193 33% 0.00 103 84 82% 4.1
Trending Topic 945 265 28% 0.01 241 185 77% 5.8
VivoParc 835 210 25% 0.00 193 154 80% 5.0