Problems from Southwestern Europe Regional Contest (SWERC) 2013

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Binary Tree 237 60 25% 0.01 61 43 70% 6.7
Decoding the Hallway 58 28 48% 0.00 27 24 89% 5.1
It Can Be Arranged 145 53 37% 0.03 49 41 84% 4.0
Joe is learning to speak 49 31 63% 0.42 22 20 91% 4.7
Mixing Colours 67 21 31% 1.20 15 10 67% 7.1
Odd and Even Zeroes 176 69 39% 0.00 64 49 77% 4.6
Shopping Malls 169 58 34% 0.00 68 53 78% 5.9
Trending Topic 782 227 29% 0.01 195 152 78% 5.8
VivoParc 509 138 27% 0.00 134 106 79% 5.2