Inspired by YouTube channel Mind Your Decisions.
Given ABC = A! + B! + C!, where A, B, C are integers between 1 and 9, find the solution tuples (A, B, C).
I provide the solution code to find solutions for arbitrary digits. That is, the problem statement which this solution code works is:
Given AB...K = A! + B! + ... + K!, where A..K are integers between (0|1) and 9, find the solution tuples (A, B, ..., K).
usage: Factorial_Digits_Sum.py [-h] [-z] [-m MULTICORE] digits
-z, -0, --allow_zero allow zeros to be part of the calculation
-m MULTICORE, --multicore MULTICORE how many cores to use. if an invalid integer is given, '1' is used