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% 6.8
Decoding the Hallway 58 28 48% 0.00 27 24 89% 5.1
It Can Be Arranged 157 58 37% 0.03 52 43 83% 4.7
Joe is learning to speak 61 35 57% 0.42 25 23 92% 4.4
Mixing Colours 67 21 31% 1.20 15 10 67% 7.1
Odd and Even Zeroes 205 70 34% 0.00 66 50 76% 5.0
Shopping Malls 174 61 35% 0.00 71 56 79% 5.6
Trending Topic 801 234 29% 0.01 202 159 79% 5.7
VivoParc 546 147 27% 0.00 138 110 80% 5.0