Problems from KTH Challenge 2015

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
A1 Paper0.0059908289929%4.4Mediumen
Black Friday0.008211789465439%1.9Easyen
Odd Binomial Coefficients0.0055212772334%3.7Mediumen
Proteins0.015663058628%6.0Harden
Shibuya Crossing0.00407101620620%6.2Harden
The Addition Game0.0012162683814%8.5Harden
Xortris0.0045236510128%6.5Harden