From eee14769b46a0dbf5f6765827b6daab333d259fc Mon Sep 17 00:00:00 2001 From: Thomas Voss Date: Fri, 20 Dec 2024 08:07:26 +0100 Subject: Add 2023 day 4 solutions --- 2023/04/puzzle-1.py | 14 ++++++++++++++ 2023/04/puzzle-2.py | 16 ++++++++++++++++ 2 files changed, 30 insertions(+) create mode 100644 2023/04/puzzle-1.py create mode 100644 2023/04/puzzle-2.py diff --git a/2023/04/puzzle-1.py b/2023/04/puzzle-1.py new file mode 100644 index 0000000..8c221d8 --- /dev/null +++ b/2023/04/puzzle-1.py @@ -0,0 +1,14 @@ +def main() -> None: + acc = 0 + with open("input", "r") as f: + while line := f.readline(): + l, r = map(str.split, line.split('|')) + l = set(filter(str.isdigit, l)) + r = set(filter(str.isdigit, r)) + if s := l & r: + acc += 1 << (len(s) - 1) + print(acc) + + +if __name__ == "__main__": + main() \ No newline at end of file diff --git a/2023/04/puzzle-2.py b/2023/04/puzzle-2.py new file mode 100644 index 0000000..8fdf4fd --- /dev/null +++ b/2023/04/puzzle-2.py @@ -0,0 +1,16 @@ +def main() -> None: + with open("input", "r") as f: + lines = f.readlines() + xs = [1] * len(lines) + for i, line in enumerate(lines): + l, r = map(str.split, line.split('|')) + l = set(filter(str.isdigit, l)) + r = set(filter(str.isdigit, r)) + n = len(l & r) + for j in range(n): + xs[i + j + 1] += xs[i] + print(sum(xs)) + + +if __name__ == "__main__": + main() \ No newline at end of file -- cgit v1.2.3