Problems from KTH Challenge 2015

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
A1 Paper0.0059641280529%4.2Mediumen
Black Friday0.008211305443339%2.1Easyen
Odd Binomial Coefficients0.0055205269434%3.8Mediumen
Proteins0.015662908529%6.0Harden
Shibuya Crossing0.0041187419622%6.2Harden
The Addition Game0.0012162513715%8.5Harden
Xortris0.004523429829%6.6Harden