From 261a396ae77686bd5e23e521eddc8b9207368a27 Mon Sep 17 00:00:00 2001 From: Mikael CAPELLE Date: Mon, 5 Dec 2022 08:58:25 +0100 Subject: [PATCH] Add day 5. --- 2022/day5.py | 43 ++++ 2022/inputs/day5.txt | 512 +++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 555 insertions(+) create mode 100644 2022/day5.py create mode 100644 2022/inputs/day5.txt diff --git a/2022/day5.py b/2022/day5.py new file mode 100644 index 0000000..0e53a44 --- /dev/null +++ b/2022/day5.py @@ -0,0 +1,43 @@ +# -*- encoding: utf-8 -*- + +import copy +import sys + +blocks_s, moves_s = (part.splitlines() for part in sys.stdin.read().split("\n\n")) + +blocks: dict[str, list[str]] = {stack: [] for stack in blocks_s[-1].split()} + +# this codes assumes that the lines are regular, i.e., 4 characters per "crate" in the +# form of '[X] ' (including the trailing space) +# +for block in blocks_s[-2::-1]: + for stack, index in zip(blocks, range(0, len(block), 4)): + crate = block[index + 1 : index + 2].strip() + + if crate: + blocks[stack].append(crate) + +# part 1 - deep copy for part 2 +blocks_1 = copy.deepcopy(blocks) + +for move in moves_s: + _, count_s, _, from_, _, to_ = move.strip().split() + + for _i in range(int(count_s)): + blocks_1[to_].append(blocks_1[from_].pop()) + +# part 2 +blocks_2 = copy.deepcopy(blocks) + +for move in moves_s: + _, count_s, _, from_, _, to_ = move.strip().split() + count = int(count_s) + + blocks_2[to_].extend(blocks_2[from_][-count:]) + del blocks_2[from_][-count:] + +answer_1 = "".join(s[-1] for s in blocks_1.values()) +print(f"answer 1 is {answer_1}") + +answer_2 = "".join(s[-1] for s in blocks_2.values()) +print(f"answer 2 is {answer_2}") diff --git a/2022/inputs/day5.txt b/2022/inputs/day5.txt new file mode 100644 index 0000000..bc14613 --- /dev/null +++ b/2022/inputs/day5.txt @@ -0,0 +1,512 @@ + [Q] [B] [H] + [F] [W] [D] [Q] [S] + [D] [C] [N] [S] [G] [F] + [R] [D] [L] [C] [N] [Q] [R] +[V] [W] [L] [M] [P] [S] [M] [M] +[J] [B] [F] [P] [B] [B] [P] [F] [F] 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