Problems from KTH Challenge 2015

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
A1 Paper0.00510157294029%4.7Mediumen
Black Friday0.008212113480240%1.9Easyen
Odd Binomial Coefficients0.0055216374034%3.6Mediumen
Proteins0.015663618724%6.2Harden
Shibuya Crossing0.00407103720920%6.2Harden
The Addition Game0.0012163193812%8.6Harden
Xortris0.0045239810426%6.3Harden