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.
Fibonacci-Sum of Squares
Connect blocks in a model
Is this a valid Tic Tac Toe State?
Singular Value Decomposition
Inscribed Pentagon? 2
Lights Out 16 - 5x5, broken buttons II
Divisible by 13
Lights Out 28 - 3x3x3, x moves
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