Write a function to find the 5th root of a number.
It sounds easy, but the typical functions are not allowed (see the test suite), so you'll need to find a non-standard method to solve the problem.
Tic Tac Toe FTW
Longest Divisor Run
Equal to their cube
find the maximum element of the matrix
Divisible by 16
Lights Out 22 - 3x4, x moves
Divisible by 3
Lights Out 25 - m x n, q stages, x moves
Rule of mixtures (composites) - lower and upper bounds (volumes)
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