Problems from KTH Challenge 2015

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
A1 Paper0.0059542276329%4.1Mediumen
Black Friday0.008211241439939%2.1Easyen
Odd Binomial Coefficients0.0055204469234%3.6Mediumen
Proteins0.015662878329%6.3Harden
Shibuya Crossing0.0041162817528%5.6Harden
The Addition Game0.0012162513715%8.5Harden
Xortris0.004523409729%6.6Harden