Problems from Southwestern Europe Regional Contest (SWERC) 2013

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Binary Tree 265 67 25% 0.01 75 50 67% 7.6
Decoding the Hallway 120 53 44% 0.00 49 45 92% 4.4
It Can Be Arranged 242 87 36% 0.03 83 68 82% 4.9
Joe is learning to speak 123 49 40% 0.42 42 35 83% 6.5
Mixing Colours 89 30 34% 1.08 22 14 64% 7.8
Odd and Even Zeroes 274 89 32% 0.00 97 69 71% 6.4
Shopping Malls 748 258 34% 0.00 153 129 84% 3.7
Trending Topic 1303 377 29% 0.01 317 252 79% 5.6
VivoParc 1696 432 25% 0.00 339 281 83% 4.9