From 9f4a2006aab365d164a44e6e07c1481ddf94a600 Mon Sep 17 00:00:00 2001 From: Akumatic Date: Mon, 5 Dec 2022 20:05:58 +0100 Subject: [PATCH] 2022 Day 05 --- 2022/05/README.md | 130 +++++++++++ 2022/05/code.py | 38 +++ 2022/05/input.txt | 512 +++++++++++++++++++++++++++++++++++++++++ 2022/05/solution.txt | 2 + 2022/05/test_code.py | 14 ++ 2022/05/test_input.txt | 9 + 2022/README.md | 4 +- 7 files changed, 707 insertions(+), 2 deletions(-) create mode 100644 2022/05/README.md create mode 100644 2022/05/code.py create mode 100644 2022/05/input.txt create mode 100644 2022/05/solution.txt create mode 100644 2022/05/test_code.py create mode 100644 2022/05/test_input.txt diff --git a/2022/05/README.md b/2022/05/README.md new file mode 100644 index 0000000..f8a1c75 --- /dev/null +++ b/2022/05/README.md @@ -0,0 +1,130 @@ +# 2022 Day 05: Supply Stacks +Copyright (c) Eric Wastl +#### [Direct Link](https://adventofcode.com/2022/day/5) + +## Part 1 + +The expedition can depart as soon as the final supplies have been unloaded from the ships. Supplies are stored in stacks of marked **crates**, but because the needed supplies are buried under many other crates, the crates need to be rearranged. + +The ship has a **giant cargo crane** capable of moving crates between stacks. To ensure none of the crates get crushed or fall over, the crane operator will rearrange them in a series of carefully-planned steps. After the crates are rearranged, the desired crates will be at the top of each stack. + +The Elves don't want to interrupt the crane operator during this delicate procedure, but they forgot to ask her **which** crate will end up where, and they want to be ready to unload them as soon as possible so they can embark. + +They do, however, have a drawing of the starting stacks of crates **and** the rearrangement procedure (your puzzle input). For example: + +``` + [D] +[N] [C] +[Z] [M] [P] + 1 2 3 + +move 1 from 2 to 1 +move 3 from 1 to 3 +move 2 from 2 to 1 +move 1 from 1 to 2 +``` + +In this example, there are three stacks of crates. Stack 1 contains two crates: crate `Z` is on the bottom, and crate `N` is on top. Stack 2 contains three crates; from bottom to top, they are crates `M`, `C`, and `D`. Finally, stack 3 contains a single crate, `P`. + +Then, the rearrangement procedure is given. In each step of the procedure, a quantity of crates is moved from one stack to a different stack. In the first step of the above rearrangement procedure, one crate is moved from stack 2 to stack 1, resulting in this configuration: + +``` +[D] +[N] [C] +[Z] [M] [P] + 1 2 3 +``` + +In the second step, three crates are moved from stack 1 to stack 3. Crates are moved **one at a time**, so the first crate to be moved (`D`) ends up below the second and third crates: + +``` + [Z] + [N] + [C] [D] + [M] [P] + 1 2 3 +``` + +Then, both crates are moved from stack 2 to stack 1. Again, because crates are moved **one at a time**, crate `C` ends up below crate `M`: + +``` + [Z] + [N] +[M] [D] +[C] [P] + 1 2 3 +``` + +Finally, one crate is moved from stack 1 to stack 2: + +``` + [Z] + [N] + [D] +[C] [M] [P] + 1 2 3 +``` + +The Elves just need to know **which crate will end up on top of each stack**; in this example, the top crates are `C` in stack 1, `M` in stack 2, and `Z` in stack 3, so you should combine these together and give the Elves the message `CMZ`. + +**After the rearrangement procedure completes, what crate ends up on top of each stack?** + +## Part 2 + +As you watch the crane operator expertly rearrange the crates, you notice the process isn't following your prediction. + +Some mud was covering the writing on the side of the crane, and you quickly wipe it away. The crane isn't a CrateMover 9000 - it's a **CrateMover 9001.** + +The CrateMover 9001 is notable for many new and exciting features: air conditioning, leather seats, an extra cup holder, and the **ability to pick up and move multiple crates at once.** + +Again considering the example above, the crates begin in the same configuration: + +``` + [D] +[N] [C] +[Z] [M] [P] + 1 2 3 +``` + +Moving a single crate from stack 2 to stack 1 behaves the same as before: + +``` +[D] +[N] [C] +[Z] [M] [P] + 1 2 3 +``` + +However, the action of moving three crates from stack 1 to stack 3 means that those three moved crates **stay in the same order**, resulting in this new configuration: + +``` + [D] + [N] + [C] [Z] + [M] [P] + 1 2 3 +``` + +Next, as both crates are moved from stack 2 to stack 1, they **retain their order** as well: + +``` + [D] + [N] +[C] [Z] +[M] [P] + 1 2 3 +``` + +Finally, a single crate is still moved from stack 1 to stack 2, but now it's crate `C` that gets moved: + +``` + [D] + [N] + [Z] +[M] [C] [P] + 1 2 3 +``` + +In this example, the CrateMover 9001 has put the crates in a totally different order: **`MCD`**. + +Before the rearrangement process finishes, update your simulation so that the Elves know where they should stand to be ready to unload the final supplies. **After the rearrangement procedure completes, what crate ends up on top of each stack?** diff --git a/2022/05/code.py b/2022/05/code.py new file mode 100644 index 0000000..31480a2 --- /dev/null +++ b/2022/05/code.py @@ -0,0 +1,38 @@ +# SPDX-License-Identifier: MIT +# Copyright (c) 2022 Akumatic +# +# https://adventofcode.com/2022/day/5 + +def read_file(filename: str = "input.txt") -> tuple: + with open(f"{__file__.rstrip('code.py')}{filename}", "r") as f: + lines = f.read().split("\n\n") + crates_input = lines[0].split("\n") + amount = int(crates_input.pop()[-2]) + stacks = [] + for i in range(amount): + stack = [stack[(i*4)+1] for stack in crates_input if stack[(i*4)+1] != " "] + stack.reverse() + stacks.append(stack) + move_input = [line.replace("move ", "").replace(" from ", " ").replace(" to ", " ") + for line in lines[1].strip().split("\n")] + moves = [[int(i) for i in move.split(" ")] for move in move_input] + return stacks, moves + +def part1(stacks: list, moves: list) -> str: + stacks_cp = [stack[:] for stack in stacks] + for move in moves: + for _ in range(move[0]): + stacks_cp[move[2] - 1].append(stacks_cp[move[1] - 1].pop()) + return "".join(stack[-1] for stack in stacks_cp) + +def part2(stacks: list, moves: list) -> str: + stacks_cp = [stack[:] for stack in stacks] + for move in moves: + stacks_cp[move[2] - 1].extend(stacks_cp[move[1] - 1][-move[0]:]) + stacks_cp[move[1] - 1] = stacks_cp[move[1] - 1][:-move[0]] + return "".join(stack[-1] for stack in stacks_cp) + +if __name__ == "__main__": + vals = read_file() + print(f"Part 1: {part1(*vals)}") + print(f"Part 2: {part2(*vals)}") diff --git a/2022/05/input.txt b/2022/05/input.txt new file mode 100644 index 0000000..33b0fd6 --- /dev/null +++ b/2022/05/input.txt @@ -0,0 +1,512 @@ +[F] [L] [M] +[T] [H] [V] [G] [V] +[N] [T] [D] [R] [N] [D] +[Z] [B] [C] [P] [B] [R] [Z] +[M] [J] [N] [M] [F] [M] [V] [H] +[G] [J] [L] [J] [S] [C] [G] [M] [F] +[H] [W] [V] [P] [W] [H] [H] [N] [N] +[J] [V] [G] [B] [F] [G] [D] [H] [G] + 1 2 3 4 5 6 7 8 9 + +move 6 from 4 to 3 +move 5 from 8 to 9 +move 1 from 4 to 5 +move 1 from 4 to 5 +move 2 from 2 to 7 +move 2 from 1 to 6 +move 9 from 6 to 1 +move 12 from 3 to 5 +move 1 from 8 to 4 +move 3 from 1 to 5 +move 1 from 6 to 7 +move 10 from 5 to 2 +move 14 from 5 to 1 +move 8 from 7 to 9 +move 11 from 2 to 9 +move 1 from 3 to 9 +move 11 from 1 to 5 +move 2 from 1 to 9 +move 1 from 4 to 8 +move 6 from 1 to 5 +move 1 from 8 to 3 +move 16 from 5 to 1 +move 4 from 1 to 3 +move 1 from 5 to 6 +move 4 from 3 to 4 +move 1 from 6 to 7 +move 21 from 9 to 6 +move 2 from 1 to 9 +move 2 from 4 to 9 +move 5 from 9 to 4 +move 9 from 1 to 6 +move 6 from 4 to 6 +move 1 from 6 to 2 +move 1 from 7 to 6 +move 1 from 3 to 2 +move 8 from 6 to 9 +move 3 from 1 to 8 +move 1 from 2 to 1 +move 13 from 6 to 3 +move 1 from 1 to 9 +move 2 from 1 to 6 +move 3 from 8 to 4 +move 4 from 4 to 9 +move 3 from 1 to 3 +move 22 from 9 to 8 +move 1 from 2 to 9 +move 6 from 8 to 9 +move 15 from 6 to 5 +move 5 from 8 to 9 +move 11 from 9 to 8 +move 13 from 5 to 1 +move 1 from 6 to 5 +move 1 from 9 to 3 +move 21 from 8 to 3 +move 3 from 5 to 3 +move 11 from 1 to 2 +move 25 from 3 to 1 +move 5 from 1 to 7 +move 20 from 1 to 7 +move 1 from 6 to 7 +move 16 from 3 to 9 +move 8 from 9 to 6 +move 1 from 1 to 5 +move 5 from 9 to 4 +move 2 from 2 to 1 +move 2 from 9 to 4 +move 1 from 9 to 4 +move 1 from 8 to 4 +move 1 from 5 to 2 +move 3 from 4 to 6 +move 1 from 4 to 7 +move 9 from 7 to 6 +move 5 from 4 to 6 +move 7 from 7 to 2 +move 1 from 1 to 6 +move 11 from 2 to 5 +move 10 from 5 to 1 +move 1 from 6 to 8 +move 1 from 5 to 7 +move 24 from 6 to 1 +move 12 from 1 to 4 +move 12 from 4 to 8 +move 2 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+move 1 from 4 to 5 +move 11 from 2 to 3 +move 9 from 9 to 3 +move 3 from 9 to 4 +move 2 from 4 to 8 +move 1 from 5 to 6 +move 13 from 1 to 5 +move 3 from 3 to 8 +move 3 from 7 to 2 +move 1 from 7 to 4 +move 3 from 8 to 3 +move 8 from 3 to 8 +move 4 from 4 to 5 +move 2 from 8 to 2 +move 8 from 8 to 3 +move 1 from 6 to 3 +move 2 from 2 to 8 +move 6 from 5 to 2 +move 3 from 2 to 8 +move 1 from 1 to 7 +move 2 from 9 to 3 +move 3 from 5 to 4 +move 2 from 8 to 6 diff --git a/2022/05/solution.txt b/2022/05/solution.txt new file mode 100644 index 0000000..53a6570 --- /dev/null +++ b/2022/05/solution.txt @@ -0,0 +1,2 @@ +Part 1: TDCHVHJTG +Part 2: NGCMPJLHV diff --git a/2022/05/test_code.py b/2022/05/test_code.py new file mode 100644 index 0000000..984c226 --- /dev/null +++ b/2022/05/test_code.py @@ -0,0 +1,14 @@ +# SPDX-License-Identifier: MIT +# Copyright (c) 2022 Akumatic + +from code import read_file, part1, part2 + +def test(): + vals = read_file("test_input.txt") + assert part1(*vals) == "CMZ" + print("Passed Part 1") + assert part2(*vals) == "MCD" + print("Passed Part 2") + +if __name__ == "__main__": + test() diff --git a/2022/05/test_input.txt b/2022/05/test_input.txt new file mode 100644 index 0000000..84933bb --- /dev/null +++ b/2022/05/test_input.txt @@ -0,0 +1,9 @@ + [D] +[N] [C] +[Z] [M] [P] + 1 2 3 + +move 1 from 2 to 1 +move 3 from 1 to 3 +move 2 from 2 to 1 +move 1 from 1 to 2 diff --git a/2022/README.md b/2022/README.md index 230b530..7a66615 100644 --- a/2022/README.md +++ b/2022/README.md @@ -18,8 +18,8 @@ Collect stars by solving puzzles. Two puzzles will be made available on each day | 01 | :white_check_mark: | :white_check_mark: | [Solution](01/code.py) | [Day 01](https://adventofcode.com/2022/day/1) | | 02 | :white_check_mark: | :white_check_mark: | [Solution](02/code.py) | [Day 02](https://adventofcode.com/2022/day/2) | | 03 | :white_check_mark: | :white_check_mark: | [Solution](03/code.py) | [Day 03](https://adventofcode.com/2022/day/3) | -| 04 | | | | [Day 04](https://adventofcode.com/2022/day/4) | -| 05 | | | | [Day 05](https://adventofcode.com/2022/day/5) | +| 04 | :white_check_mark: | :white_check_mark: | [Solution](04/code.py) | [Day 04](https://adventofcode.com/2022/day/4) | +| 05 | :white_check_mark: | :white_check_mark: | [Solution](05/code.py) | [Day 05](https://adventofcode.com/2022/day/5) | | 06 | | | | [Day 06](https://adventofcode.com/2022/day/6) | | 07 | | | | [Day 07](https://adventofcode.com/2022/day/7) | | 08 | | | | [Day 08](https://adventofcode.com/2022/day/8) |