Problems from Southwestern Europe Regional Contest (SWERC) 2013

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Binary Tree0.016043518223%8.4Harden
Decoding the Hallway0.003332437631%5.9Harden
It Can Be Arranged0.03113633911735%4.7Mediumen
Joe is learning to speak0.429051886836%6.5Harden
Mixing Colours0.4812071424632%6.6Harden
Odd and Even Zeroes0.0041833210030%6.0Harden
Shopping Malls0.00117175129740%3.9Mediumen
Trending Topic0.01484154547731%4.8Mediumen
VivoParc0.00410213551624%5.1Mediumen