Solutions for Advent Of Code
├── <year>
│ ├── <day>
│ │ ├── input.txt
│ │ ├── sample.txt (optional
│ │ └── <file(s) with solution>
│ └── auxiliary files holding project(s) metadata, i.e. foo.cabal for Haskell code (optional)
│ ...
A solution program tend to accept the input through STDIN, process it, then output the answers to STDOUT, denoting # of the Part it belongs to I.e.:
$ python ./2021/13/main.py < ./2021/13/input.txt
Part 1: 842
Part 2:
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