Your solution is fastest so far.
Good job, Athi.
@Athi, your solution contains many "magic" constant variables that I don't know how you got.
William's solution is much easier to understood, although it is slower than yours.
Thanks li haitao.
Factorize THIS, buddy
Find a subset that divides the vector into equal halves
Given a matrix, swap the 2nd & 3rd columns
length of a vector
Lights Out 7 - 5x5, x moves
Highly divisible triangular number (inspired by Project Euler 12)
Lights Out 6 - 5x5, 13 moves
Divisible by n, prime divisors - 11, 13, 17, & 19
Divisible by 2
Scrabble Scores - 2
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