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# trebuchet

This folder contains a Logtalk solution for the Advent of Code 2023 Day 1
problem:

https://adventofcode.com/2023/day/1

The solution provided is for Part 2 of the problem. To solve just for
Part 1, comment out the grammar rules for digits as letters.

The `test_files` directory contain sample inputs for part 1 of the problem
copied from the problem description. For copyright reasons, the part 2 files
cannot be distributed here and **must** be downloaded from the Advent of Code
2023 website.

Print Logtalk, Prolog backend, and kernel versions (if running as a notebook):

```logtalk
%versions
```

Start by loading the example:

```logtalk
logtalk_load(trebuchet(loader)).
```

<!--
true.
-->

Compute the calibration for the `test_files/sample_1` file (part 1):

```logtalk
object_property(trebuchet, file(_, Directory)),
atom_concat(Directory, 'test_files/sample_1', File),
trebuchet::solution(File, Calibration).
```

<!--
Calibration = 142.
-->

Compute the calibration for the `test_files/sample_2` file (part 1):

```logtalk
object_property(trebuchet, file(_, Directory)),
atom_concat(Directory, 'test_files/sample_2', File),
trebuchet::solution(File, Calibration).
```

<!--
Calibration = 281.
-->

Compute the calibration for the `test_files/input` file (part 2):

```logtalk
object_property(trebuchet, file(_, Directory)),
atom_concat(Directory, 'test_files/input', File),
trebuchet::solution(File, Calibration).
```

<!--
Calibration = 53894.
-->
