2024: Day 1

Author: MiLk

2024/python/.gitignore

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+venv
+session_id.txt

2024/python/.python-version

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+3.12.4

2024/python/Makefile

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+setup:
+	[ -d venv ] || python -m venv venv
+	source venv/bin/activate && pip install -r requirements.txt
+.PHONY: setup
+
+fetch:
+	source venv/bin/activate && python -m scripts.fetch_input
+.PHONY: fetch
+
+lint:
+	python -m isort .
+	python -m black .
+.PHONY: lint
+
+mypy:
+	python -m mypy .
+.PHONY: lint

2024/python/day1/__init__.py

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+from collections import Counter
+
+from utils.file import read_input
+
+
+def main() -> None:
+    lines = read_input(__package__)
+    l1 = sorted(int(line[:5]) for line in lines)
+    l2 = sorted(int(line[8:14]) for line in lines)
+
+    distance = sum(abs(a - b) for a, b in zip(l1, l2))
+    print("Part 1:", distance)
+
+    c = Counter(l2)
+    similarity = sum(n * c[n] for n in set(l1))
+    print("Part 2:", similarity)
+
+
+if __name__ == "__main__":
+    main()