Problems from KTH Challenge 2015

Name
Fastest
Shortest
Authors
Full Solves
Ratio
Difficulty
Languages
A1 Paper0.00983101240678%4.4Mediumen
Black Friday0.00825036448589%1.6Easyen
Odd Binomial Coefficients0.005557048886%3.5Mediumen
Proteins0.015261017978%5.5Harden
Shibuya Crossing0.0040721314669%5.9Harden
The Addition Game0.001216652640%8.8Harden
Xortris0.0045213710476%6.8Harden