Oops, this is not a complete answer, despite passing the tests.
Make a checkerboard matrix
Factorize THIS, buddy
Project Euler: Problem 6, Natural numbers, squares and sums.
Create a matrix from a cell
GJam 2011 Africa Qualifier C: House, maximum area rectangle
Genome Sequence 003R: Sequence DNA of random positioned and flipped segments
GJam 2011 Africa Qual A: Maximum Loop Size
Animated GIF Creator
Maximum Intra-Vector Swaps
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