mirror of
https://github.com/seigler/aoc2021
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day 22
This commit is contained in:
Joshua Seigler
parent
9a7167c3b0
commit
11dfb6e947
4 changed files with 166 additions and 12 deletions
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@ -313,16 +313,16 @@
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},
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{
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"part1": {
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"solved": false,
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"result": null,
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"solved": true,
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"result": "610196",
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"attempts": [],
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"time": null
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"time": 17.77
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},
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"part2": {
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"solved": false,
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"result": null,
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"solved": true,
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"result": "1282401587270826",
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"attempts": [],
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"time": null
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"time": 535.33
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}
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},
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{
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12
README.md
12
README.md
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@ -32,7 +32,7 @@
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[](src/day21)
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[](src/day22)
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@ -216,9 +216,9 @@ Both parts: 147.48000000000002ms
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```
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Day 22
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Time part 1: -
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Time part 2: -
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Both parts: -
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Time part 1: 502.28ms
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Time part 2: 552.54ms
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Both parts: 1054.82ms
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```
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```
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@ -243,8 +243,8 @@ Both parts: -
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```
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```
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Total stars: 38/50
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Total time: 2784.6299999999997ms
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Total stars: 40/50
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Total time: 3839.45ms
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```
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<!--/RESULTS-->
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9
src/day22/README.md
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9
src/day22/README.md
Normal file
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@ -0,0 +1,9 @@
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# 🎄 Advent of Code 2021 - day 22 🎄
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## Info
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Task description: [link](https://adventofcode.com/2021/day/22)
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## Notes
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...
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145
src/day22/index.js
Normal file
145
src/day22/index.js
Normal file
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@ -0,0 +1,145 @@
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import run from "aocrunner"
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const parseInput = (rawInput) => rawInput.trim().split`\n`.map(l => {
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const [on, coords] = l.split` `
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const numbers = coords.match(/-?\d+/g).map(x=>+x)
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const ranges = []
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for (let i = 0; i < numbers.length; i+=2)
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ranges.push([numbers[i], numbers[i+1]])
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return {
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on: on === "on",
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ranges
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}
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})
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function volume(c) {
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return c.reduce((acc, [min, max]) => acc *= max + 1 - min, 1)
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}
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function intersect2d(a, b) {
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const newMin = Math.max(a[0], b[0]), newMax = Math.min(a[1], b[1])
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return newMin > newMax ? null : [newMin, newMax]
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}
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function overwrittenVolume(a, cuboids) {
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return cuboids.map((b, i) => {
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const intersection = a.map((aRange, j) => intersect2d(aRange, b.ranges[j]))
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if (intersection.includes(null)) return 0 // no overlapping volume
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return volume(intersection) - overwrittenVolume(intersection, cuboids.slice(1 + i))
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}).reduce((acc, cur) => acc + cur, 0)
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}
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function countOn(cuboids) {
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let total = 0
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for (let i = 0; i < cuboids.length; i++) if (cuboids[i].on)
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total += volume(cuboids[i].ranges) - overwrittenVolume(cuboids[i].ranges, cuboids.slice(i+1))
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return total
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}
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const part1 = (rawInput) => {
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const input = parseInput(rawInput)
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return countOn(input.slice(0,20))
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}
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const part2 = (rawInput) => {
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const input = parseInput(rawInput)
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return countOn(input)
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}
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run({
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part1: {
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tests: [
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{ input:
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`on x=-20..26,y=-36..17,z=-47..7
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on x=-20..33,y=-21..23,z=-26..28
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on x=-22..28,y=-29..23,z=-38..16
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on x=-46..7,y=-6..46,z=-50..-1
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on x=-49..1,y=-3..46,z=-24..28
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on x=2..47,y=-22..22,z=-23..27
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on x=-27..23,y=-28..26,z=-21..29
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on x=-39..5,y=-6..47,z=-3..44
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on x=-30..21,y=-8..43,z=-13..34
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on x=-22..26,y=-27..20,z=-29..19
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off x=-48..-32,y=26..41,z=-47..-37
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on x=-12..35,y=6..50,z=-50..-2
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off x=-48..-32,y=-32..-16,z=-15..-5
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on x=-18..26,y=-33..15,z=-7..46
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off x=-40..-22,y=-38..-28,z=23..41
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on x=-16..35,y=-41..10,z=-47..6
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off x=-32..-23,y=11..30,z=-14..3
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on x=-49..-5,y=-3..45,z=-29..18
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off x=18..30,y=-20..-8,z=-3..13
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on x=-41..9,y=-7..43,z=-33..15
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on x=-54112..-39298,y=-85059..-49293,z=-27449..7877
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on x=967..23432,y=45373..81175,z=27513..53682`, expected: 590784 },
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],
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solution: part1,
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},
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part2: {
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tests: [
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{ input:
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`on x=-5..47,y=-31..22,z=-19..33
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on x=-44..5,y=-27..21,z=-14..35
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on x=-49..-1,y=-11..42,z=-10..38
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on x=-20..34,y=-40..6,z=-44..1
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off x=26..39,y=40..50,z=-2..11
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on x=-41..5,y=-41..6,z=-36..8
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off x=-43..-33,y=-45..-28,z=7..25
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on x=-33..15,y=-32..19,z=-34..11
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off x=35..47,y=-46..-34,z=-11..5
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on x=-14..36,y=-6..44,z=-16..29
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on x=-57795..-6158,y=29564..72030,z=20435..90618
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on x=36731..105352,y=-21140..28532,z=16094..90401
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on x=30999..107136,y=-53464..15513,z=8553..71215
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on x=13528..83982,y=-99403..-27377,z=-24141..23996
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on x=-72682..-12347,y=18159..111354,z=7391..80950
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on x=-1060..80757,y=-65301..-20884,z=-103788..-16709
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on x=-83015..-9461,y=-72160..-8347,z=-81239..-26856
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on x=-52752..22273,y=-49450..9096,z=54442..119054
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on x=-29982..40483,y=-108474..-28371,z=-24328..38471
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on x=-4958..62750,y=40422..118853,z=-7672..65583
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on x=55694..108686,y=-43367..46958,z=-26781..48729
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on x=-98497..-18186,y=-63569..3412,z=1232..88485
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on x=-726..56291,y=-62629..13224,z=18033..85226
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on x=-110886..-34664,y=-81338..-8658,z=8914..63723
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on x=-55829..24974,y=-16897..54165,z=-121762..-28058
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on x=-65152..-11147,y=22489..91432,z=-58782..1780
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on x=-120100..-32970,y=-46592..27473,z=-11695..61039
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on x=-18631..37533,y=-124565..-50804,z=-35667..28308
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on x=-57817..18248,y=49321..117703,z=5745..55881
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on x=14781..98692,y=-1341..70827,z=15753..70151
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on x=-34419..55919,y=-19626..40991,z=39015..114138
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on x=-60785..11593,y=-56135..2999,z=-95368..-26915
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on x=-32178..58085,y=17647..101866,z=-91405..-8878
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on x=-53655..12091,y=50097..105568,z=-75335..-4862
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on x=-111166..-40997,y=-71714..2688,z=5609..50954
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on x=-16602..70118,y=-98693..-44401,z=5197..76897
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on x=16383..101554,y=4615..83635,z=-44907..18747
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off x=-95822..-15171,y=-19987..48940,z=10804..104439
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on x=-89813..-14614,y=16069..88491,z=-3297..45228
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on x=41075..99376,y=-20427..49978,z=-52012..13762
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on x=-21330..50085,y=-17944..62733,z=-112280..-30197
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on x=-16478..35915,y=36008..118594,z=-7885..47086
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off x=-98156..-27851,y=-49952..43171,z=-99005..-8456
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off x=2032..69770,y=-71013..4824,z=7471..94418
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on x=43670..120875,y=-42068..12382,z=-24787..38892
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off x=37514..111226,y=-45862..25743,z=-16714..54663
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off x=25699..97951,y=-30668..59918,z=-15349..69697
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off x=-44271..17935,y=-9516..60759,z=49131..112598
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on x=-61695..-5813,y=40978..94975,z=8655..80240
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off x=-101086..-9439,y=-7088..67543,z=33935..83858
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off x=18020..114017,y=-48931..32606,z=21474..89843
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off x=-77139..10506,y=-89994..-18797,z=-80..59318
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off x=8476..79288,y=-75520..11602,z=-96624..-24783
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on x=-47488..-1262,y=24338..100707,z=16292..72967
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off x=-84341..13987,y=2429..92914,z=-90671..-1318
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off x=-37810..49457,y=-71013..-7894,z=-105357..-13188
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off x=-27365..46395,y=31009..98017,z=15428..76570
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off x=-70369..-16548,y=22648..78696,z=-1892..86821
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on x=-53470..21291,y=-120233..-33476,z=-44150..38147
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off x=-93533..-4276,y=-16170..68771,z=-104985..-24507`, expected: 2758514936282235 },
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],
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solution: part2,
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},
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trimTestInputs: true,
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})
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