Problems from Southwestern Europe Regional Contest (SWERC) 2013

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Binary Tree 290 67 23% 0.01 81 50 62% 8.5
Decoding the Hallway 138 58 42% 0.00 55 49 89% 5.1
It Can Be Arranged 248 91 37% 0.03 87 72 83% 4.8
Joe is learning to speak 125 50 40% 0.42 44 36 82% 6.6
Mixing Colours 91 30 33% 1.08 24 14 58% 7.5
Odd and Even Zeroes 274 89 32% 0.00 97 69 71% 6.5
Shopping Malls 779 276 35% 0.00 165 139 84% 4.3
Trending Topic 1455 459 32% 0.01 365 299 82% 5.0
VivoParc 1958 491 25% 0.00 385 315 82% 5.3