AoC2021_22.py

#! /usr/bin/env python3
#
# Advent of Code 2021 Day 22
#

import re
from collections import Counter
from typing import NamedTuple
from aoc import my_aocd
import aocd


class RebootStep(NamedTuple):
    x1: int
    x2: int
    y1: int
    y2: int
    z1: int
    z2: int
    on: bool


def _parse(inputs: tuple[str]) -> list[RebootStep]:
    return [
        RebootStep(
            *(map(int, re.findall(r'-?\d+', line))),
            line.split()[0] == "on")
        for line in inputs
    ]


def _solve(steps: list[RebootStep]) -> int:
    cuboids = Counter()
    for s in steps:
        update = Counter()
        # delete = list()
        if s.on:
            update[(s.x1, s.x2, s.y1, s.y2, s.z1, s.z2)] += 1
        for (ex1, ex2, ey1, ey2, ez1, ez2), en in cuboids.items():
            # if ex1 >= s.x1 and ex2 <= s.x2 \
            #    and ey1 >= s.y1 and ey2 <= s.y2 \
            #    and ez1 >= s.z1 and ez2 <= s.z2:
            #     delete.append((ex1, ex2, ey1, ey2, ez1, ez2))
            #     continue
            ix1 = max(s.x1, ex1)
            ix2 = min(s.x2, ex2)
            iy1 = max(s.y1, ey1)
            iy2 = min(s.y2, ey2)
            iz1 = max(s.z1, ez1)
            iz2 = min(s.z2, ez2)
            if ix1 <= ix2 and iy1 <= iy2 and iz1 <= iz2:
                update[(ix1, ix2, iy1, iy2, iz1, iz2)] -= en
        # for _ in delete:
        #     del cuboids[_]
        cuboids.update(update)
        temp = Counter(cuboids)
        for k, v in temp.items():
            if v == 0:
                del cuboids[k]
    return sum(
        ((x2 - x1 + 1) * (y2 - y1 + 1) * (z2 - z1 + 1)) * n
        for (x1, x2, y1, y2, z1, z2), n in cuboids.items()
    )


def part_1(inputs: tuple[str]) -> int:
    init_steps = [
        s
        for s in _parse(inputs)
        if not (s.x1 < -50 or s.x2 > 50
                or s.y1 < -50 or s.y2 > 50
                or s.z1 < -50 or s.z2 > 50)
    ]
    return _solve(init_steps)


def part_2(inputs: tuple[str]) -> int:
    return _solve(_parse(inputs))


TEST1 = """\
on x=10..12,y=10..12,z=10..12
on x=11..13,y=11..13,z=11..13
off x=9..11,y=9..11,z=9..11
on x=10..10,y=10..10,z=10..10
""".splitlines()
TEST2 = """\
on x=-20..26,y=-36..17,z=-47..7
on x=-20..33,y=-21..23,z=-26..28
on x=-22..28,y=-29..23,z=-38..16
on x=-46..7,y=-6..46,z=-50..-1
on x=-49..1,y=-3..46,z=-24..28
on x=2..47,y=-22..22,z=-23..27
on x=-27..23,y=-28..26,z=-21..29
on x=-39..5,y=-6..47,z=-3..44
on x=-30..21,y=-8..43,z=-13..34
on x=-22..26,y=-27..20,z=-29..19
off x=-48..-32,y=26..41,z=-47..-37
on x=-12..35,y=6..50,z=-50..-2
off x=-48..-32,y=-32..-16,z=-15..-5
on x=-18..26,y=-33..15,z=-7..46
off x=-40..-22,y=-38..-28,z=23..41
on x=-16..35,y=-41..10,z=-47..6
off x=-32..-23,y=11..30,z=-14..3
on x=-49..-5,y=-3..45,z=-29..18
off x=18..30,y=-20..-8,z=-3..13
on x=-41..9,y=-7..43,z=-33..15
on x=-54112..-39298,y=-85059..-49293,z=-27449..7877
on x=967..23432,y=45373..81175,z=27513..53682
""".splitlines()
TEST3 = """\
on x=-5..47,y=-31..22,z=-19..33
on x=-44..5,y=-27..21,z=-14..35
on x=-49..-1,y=-11..42,z=-10..38
on x=-20..34,y=-40..6,z=-44..1
off x=26..39,y=40..50,z=-2..11
on x=-41..5,y=-41..6,z=-36..8
off x=-43..-33,y=-45..-28,z=7..25
on x=-33..15,y=-32..19,z=-34..11
off x=35..47,y=-46..-34,z=-11..5
on x=-14..36,y=-6..44,z=-16..29
on x=-57795..-6158,y=29564..72030,z=20435..90618
on x=36731..105352,y=-21140..28532,z=16094..90401
on x=30999..107136,y=-53464..15513,z=8553..71215
on x=13528..83982,y=-99403..-27377,z=-24141..23996
on x=-72682..-12347,y=18159..111354,z=7391..80950
on x=-1060..80757,y=-65301..-20884,z=-103788..-16709
on x=-83015..-9461,y=-72160..-8347,z=-81239..-26856
on x=-52752..22273,y=-49450..9096,z=54442..119054
on x=-29982..40483,y=-108474..-28371,z=-24328..38471
on x=-4958..62750,y=40422..118853,z=-7672..65583
on x=55694..108686,y=-43367..46958,z=-26781..48729
on x=-98497..-18186,y=-63569..3412,z=1232..88485
on x=-726..56291,y=-62629..13224,z=18033..85226
on x=-110886..-34664,y=-81338..-8658,z=8914..63723
on x=-55829..24974,y=-16897..54165,z=-121762..-28058
on x=-65152..-11147,y=22489..91432,z=-58782..1780
on x=-120100..-32970,y=-46592..27473,z=-11695..61039
on x=-18631..37533,y=-124565..-50804,z=-35667..28308
on x=-57817..18248,y=49321..117703,z=5745..55881
on x=14781..98692,y=-1341..70827,z=15753..70151
on x=-34419..55919,y=-19626..40991,z=39015..114138
on x=-60785..11593,y=-56135..2999,z=-95368..-26915
on x=-32178..58085,y=17647..101866,z=-91405..-8878
on x=-53655..12091,y=50097..105568,z=-75335..-4862
on x=-111166..-40997,y=-71714..2688,z=5609..50954
on x=-16602..70118,y=-98693..-44401,z=5197..76897
on x=16383..101554,y=4615..83635,z=-44907..18747
off x=-95822..-15171,y=-19987..48940,z=10804..104439
on x=-89813..-14614,y=16069..88491,z=-3297..45228
on x=41075..99376,y=-20427..49978,z=-52012..13762
on x=-21330..50085,y=-17944..62733,z=-112280..-30197
on x=-16478..35915,y=36008..118594,z=-7885..47086
off x=-98156..-27851,y=-49952..43171,z=-99005..-8456
off x=2032..69770,y=-71013..4824,z=7471..94418
on x=43670..120875,y=-42068..12382,z=-24787..38892
off x=37514..111226,y=-45862..25743,z=-16714..54663
off x=25699..97951,y=-30668..59918,z=-15349..69697
off x=-44271..17935,y=-9516..60759,z=49131..112598
on x=-61695..-5813,y=40978..94975,z=8655..80240
off x=-101086..-9439,y=-7088..67543,z=33935..83858
off x=18020..114017,y=-48931..32606,z=21474..89843
off x=-77139..10506,y=-89994..-18797,z=-80..59318
off x=8476..79288,y=-75520..11602,z=-96624..-24783
on x=-47488..-1262,y=24338..100707,z=16292..72967
off x=-84341..13987,y=2429..92914,z=-90671..-1318
off x=-37810..49457,y=-71013..-7894,z=-105357..-13188
off x=-27365..46395,y=31009..98017,z=15428..76570
off x=-70369..-16548,y=22648..78696,z=-1892..86821
on x=-53470..21291,y=-120233..-33476,z=-44150..38147
off x=-93533..-4276,y=-16170..68771,z=-104985..-24507
""".splitlines()


def main() -> None:
    puzzle = aocd.models.Puzzle(2021, 22)
    my_aocd.print_header(puzzle.year, puzzle.day)

    assert part_1(TEST1) == 39
    assert part_1(TEST2) == 590_784
    assert part_1(TEST3) == 474_140
    assert part_2(TEST3) == 2_758_514_936_282_235

    inputs = my_aocd.get_input(puzzle.year, puzzle.day, 420)
    result1 = part_1(inputs)
    print(f"Part 1: {result1}")
    result2 = part_2(inputs)
    print(f"Part 2: {result2}")
    my_aocd.check_results(puzzle, result1, result2)


if __name__ == '__main__':
    main()