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% 7.0
Decoding the Hallway 70 34 49% 0.00 34 29 85% 4.9
It Can Be Arranged 169 63 37% 0.03 58 48 83% 5.4
Joe is learning to speak 76 39 51% 0.42 31 27 87% 5.7
Mixing Colours 81 27 33% 1.08 19 12 63% 8.1
Odd and Even Zeroes 231 79 34% 0.00 77 59 77% 4.7
Shopping Malls 206 74 36% 0.00 79 63 80% 5.6
Trending Topic 879 255 29% 0.01 229 176 77% 5.9
VivoParc 782 195 25% 0.00 182 145 80% 4.9