It appears that Alfonso took 7 minutes to solve this challenge.
very clever simplifications (constant term in linear model is irrelevant, and optimal slope can only take a discrete set of values)
Tobias took at least 2 minutes to solve this challenge with Matlab. An elegant usage of a function and a Matlab optimization function. This solution also crushed the GJam BigDataset in 1.2 seconds.
System of equations
Remove from a 2-D matrix all the rows that contain at least one element less than or equal to 4
Generate a vector like 1,2,2,3,3,3,4,4,4,4
Path Optimization thru N words : Time Optimization
LASER Tracker - Mirror Distance and Angle
Chezz_015 : Simplified chess
GJam 2014 Rd 1c: Reordering Train Cars (Large)
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