Code49 Decoder (For Arknights PV4 puzzle ONLY)
Thanks to lukecyca's code49 encoder
It treats Code49 as Mode-0, and ignores other non-data characters.
Decoder is written as a simple inverse program of code49 encoder.
Note: Code49 encoder is in Python2, our decoder is in Python3, so some of the original codes are rewritten into Python3.
Code 49 encoder source code: https://github.com/lukecyca/code49
Code 49 specification: https://www.expresscorp.com/wp-content/uploads/2023/02/USS-49.pdf