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.
Implement simple rotation cypher
Find out missing number from a vector of 9 elements
Digit concentration in Champernowne's constant
Extra safe primes
Lights Out 17 - 5x5, broken buttons III
Radiation Heat Transfer — View Factors (2)
Lights Out 18 - 3x3, 3 moves
Lights Out 13 - 5x5, three stages, x moves
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