Problems from KTH Challenge 2015

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
A1 Paper0.0059879288829%4.3Mediumen
Black Friday0.008211750463639%1.9Easyen
Odd Binomial Coefficients0.0055212272134%3.7Mediumen
Proteins0.015663038628%6.0Harden
Shibuya Crossing0.00407101320520%6.3Harden
The Addition Game0.0012162653814%8.5Harden
Xortris0.0045236310128%6.4Harden