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.
Find all elements less than 0 or greater than 10 and replace them with NaN
Check to see if a Sudoku Puzzle is Solved
Crossing to Kissing - Untangle the Lines
Guess the Coefficients!
GJam 2014 China Rd A: Rational Number Tree
Create a Video
Unique: Enhanced Performance - Large and Wide Array - Speed Improvement (66% savings)
Rubik's Cube: 30 Moves or Less : Contest Scoring (Time/Size/Moves)
REPMAT Enhancement - Faster for Large Row Replication of Vector
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