Problems from KTH Challenge 2015

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
A1 Paper0.00510012292629%4.6Mediumen
Black Friday0.008212031477640%1.9Easyen
Odd Binomial Coefficients0.0055215073534%3.7Mediumen
Proteins0.015663208727%5.9Harden
Shibuya Crossing0.00407103020820%6.2Harden
The Addition Game0.0012162783814%8.5Harden
Xortris0.0045238210327%6.5Harden