mirror of
https://github.com/parnic/advent-of-code-2022.git
synced 2025-06-16 13:40:13 -05:00
Day 14 solution
This runs slower than I'd like, but I wanted to check my initial solution submitted so I can iterate on it later.
This commit is contained in:
@ -63,6 +63,7 @@
|
||||
<EmbeddedResource Include="inputs\13a.txt" />
|
||||
<EmbeddedResource Include="inputs\14.txt" />
|
||||
<None Remove="inputs\15.txt" />
|
||||
<EmbeddedResource Include="inputs\14a.txt" />
|
||||
<EmbeddedResource Include="inputs\15.txt" />
|
||||
<None Remove="inputs\16.txt" />
|
||||
<EmbeddedResource Include="inputs\16.txt" />
|
||||
|
||||
217
inputs/14.txt
217
inputs/14.txt
@ -1,102 +1,115 @@
|
||||
OKSBBKHFBPVNOBKHBPCO
|
||||
|
||||
CB -> P
|
||||
VH -> S
|
||||
CF -> P
|
||||
OV -> B
|
||||
CH -> N
|
||||
PB -> F
|
||||
KF -> O
|
||||
BC -> K
|
||||
FB -> F
|
||||
SN -> F
|
||||
FV -> B
|
||||
PN -> K
|
||||
SF -> V
|
||||
FN -> F
|
||||
SS -> K
|
||||
VP -> F
|
||||
VB -> B
|
||||
OS -> N
|
||||
HP -> O
|
||||
NF -> S
|
||||
SK -> H
|
||||
OO -> S
|
||||
PF -> C
|
||||
CC -> P
|
||||
BP -> F
|
||||
OB -> C
|
||||
CS -> N
|
||||
BV -> F
|
||||
VV -> B
|
||||
HO -> F
|
||||
KN -> P
|
||||
VC -> K
|
||||
KK -> N
|
||||
BO -> V
|
||||
NH -> O
|
||||
HC -> S
|
||||
SB -> F
|
||||
NN -> V
|
||||
OF -> V
|
||||
FK -> S
|
||||
OP -> S
|
||||
NS -> C
|
||||
HV -> O
|
||||
PC -> C
|
||||
FO -> H
|
||||
OH -> F
|
||||
BF -> S
|
||||
SO -> O
|
||||
HB -> P
|
||||
NK -> H
|
||||
NV -> C
|
||||
NB -> B
|
||||
FF -> B
|
||||
BH -> C
|
||||
SV -> B
|
||||
BK -> K
|
||||
NO -> C
|
||||
VN -> P
|
||||
FC -> B
|
||||
PH -> V
|
||||
HH -> C
|
||||
VO -> O
|
||||
SP -> P
|
||||
VK -> N
|
||||
CP -> H
|
||||
SC -> C
|
||||
KV -> H
|
||||
CO -> C
|
||||
OK -> V
|
||||
ON -> C
|
||||
KS -> S
|
||||
NP -> O
|
||||
CK -> C
|
||||
BS -> F
|
||||
VS -> B
|
||||
KH -> O
|
||||
KC -> C
|
||||
KB -> N
|
||||
OC -> F
|
||||
PP -> S
|
||||
HK -> H
|
||||
BN -> S
|
||||
KO -> K
|
||||
NC -> B
|
||||
PK -> K
|
||||
CV -> H
|
||||
PO -> O
|
||||
BB -> C
|
||||
HS -> F
|
||||
SH -> K
|
||||
CN -> S
|
||||
HN -> S
|
||||
KP -> O
|
||||
FP -> H
|
||||
HF -> F
|
||||
PS -> B
|
||||
FH -> K
|
||||
PV -> O
|
||||
FS -> N
|
||||
VF -> V
|
||||
504,62 -> 504,58 -> 504,62 -> 506,62 -> 506,54 -> 506,62 -> 508,62 -> 508,55 -> 508,62
|
||||
514,69 -> 519,69
|
||||
534,120 -> 534,110 -> 534,120 -> 536,120 -> 536,115 -> 536,120 -> 538,120 -> 538,117 -> 538,120 -> 540,120 -> 540,119 -> 540,120 -> 542,120 -> 542,116 -> 542,120
|
||||
510,67 -> 515,67
|
||||
489,36 -> 489,29 -> 489,36 -> 491,36 -> 491,34 -> 491,36 -> 493,36 -> 493,26 -> 493,36 -> 495,36 -> 495,35 -> 495,36 -> 497,36 -> 497,29 -> 497,36 -> 499,36 -> 499,31 -> 499,36
|
||||
534,120 -> 534,110 -> 534,120 -> 536,120 -> 536,115 -> 536,120 -> 538,120 -> 538,117 -> 538,120 -> 540,120 -> 540,119 -> 540,120 -> 542,120 -> 542,116 -> 542,120
|
||||
515,104 -> 520,104
|
||||
514,86 -> 514,87 -> 530,87 -> 530,86
|
||||
489,36 -> 489,29 -> 489,36 -> 491,36 -> 491,34 -> 491,36 -> 493,36 -> 493,26 -> 493,36 -> 495,36 -> 495,35 -> 495,36 -> 497,36 -> 497,29 -> 497,36 -> 499,36 -> 499,31 -> 499,36
|
||||
534,120 -> 534,110 -> 534,120 -> 536,120 -> 536,115 -> 536,120 -> 538,120 -> 538,117 -> 538,120 -> 540,120 -> 540,119 -> 540,120 -> 542,120 -> 542,116 -> 542,120
|
||||
489,36 -> 489,29 -> 489,36 -> 491,36 -> 491,34 -> 491,36 -> 493,36 -> 493,26 -> 493,36 -> 495,36 -> 495,35 -> 495,36 -> 497,36 -> 497,29 -> 497,36 -> 499,36 -> 499,31 -> 499,36
|
||||
510,90 -> 510,92 -> 502,92 -> 502,97 -> 516,97 -> 516,92 -> 515,92 -> 515,90
|
||||
504,62 -> 504,58 -> 504,62 -> 506,62 -> 506,54 -> 506,62 -> 508,62 -> 508,55 -> 508,62
|
||||
534,120 -> 534,110 -> 534,120 -> 536,120 -> 536,115 -> 536,120 -> 538,120 -> 538,117 -> 538,120 -> 540,120 -> 540,119 -> 540,120 -> 542,120 -> 542,116 -> 542,120
|
||||
497,71 -> 502,71
|
||||
521,84 -> 521,82 -> 521,84 -> 523,84 -> 523,82 -> 523,84 -> 525,84 -> 525,77 -> 525,84
|
||||
534,120 -> 534,110 -> 534,120 -> 536,120 -> 536,115 -> 536,120 -> 538,120 -> 538,117 -> 538,120 -> 540,120 -> 540,119 -> 540,120 -> 542,120 -> 542,116 -> 542,120
|
||||
568,158 -> 573,158
|
||||
497,13 -> 497,16 -> 496,16 -> 496,23 -> 511,23 -> 511,16 -> 503,16 -> 503,13
|
||||
556,152 -> 561,152
|
||||
497,13 -> 497,16 -> 496,16 -> 496,23 -> 511,23 -> 511,16 -> 503,16 -> 503,13
|
||||
548,127 -> 553,127
|
||||
524,107 -> 538,107 -> 538,106
|
||||
544,125 -> 549,125
|
||||
497,39 -> 497,43 -> 493,43 -> 493,49 -> 506,49 -> 506,43 -> 501,43 -> 501,39
|
||||
553,138 -> 553,141 -> 546,141 -> 546,149 -> 558,149 -> 558,141 -> 557,141 -> 557,138
|
||||
489,36 -> 489,29 -> 489,36 -> 491,36 -> 491,34 -> 491,36 -> 493,36 -> 493,26 -> 493,36 -> 495,36 -> 495,35 -> 495,36 -> 497,36 -> 497,29 -> 497,36 -> 499,36 -> 499,31 -> 499,36
|
||||
553,138 -> 553,141 -> 546,141 -> 546,149 -> 558,149 -> 558,141 -> 557,141 -> 557,138
|
||||
534,127 -> 539,127
|
||||
521,84 -> 521,82 -> 521,84 -> 523,84 -> 523,82 -> 523,84 -> 525,84 -> 525,77 -> 525,84
|
||||
537,125 -> 542,125
|
||||
521,84 -> 521,82 -> 521,84 -> 523,84 -> 523,82 -> 523,84 -> 525,84 -> 525,77 -> 525,84
|
||||
521,84 -> 521,82 -> 521,84 -> 523,84 -> 523,82 -> 523,84 -> 525,84 -> 525,77 -> 525,84
|
||||
553,138 -> 553,141 -> 546,141 -> 546,149 -> 558,149 -> 558,141 -> 557,141 -> 557,138
|
||||
489,36 -> 489,29 -> 489,36 -> 491,36 -> 491,34 -> 491,36 -> 493,36 -> 493,26 -> 493,36 -> 495,36 -> 495,35 -> 495,36 -> 497,36 -> 497,29 -> 497,36 -> 499,36 -> 499,31 -> 499,36
|
||||
497,39 -> 497,43 -> 493,43 -> 493,49 -> 506,49 -> 506,43 -> 501,43 -> 501,39
|
||||
514,86 -> 514,87 -> 530,87 -> 530,86
|
||||
534,120 -> 534,110 -> 534,120 -> 536,120 -> 536,115 -> 536,120 -> 538,120 -> 538,117 -> 538,120 -> 540,120 -> 540,119 -> 540,120 -> 542,120 -> 542,116 -> 542,120
|
||||
518,71 -> 523,71
|
||||
551,131 -> 556,131
|
||||
489,36 -> 489,29 -> 489,36 -> 491,36 -> 491,34 -> 491,36 -> 493,36 -> 493,26 -> 493,36 -> 495,36 -> 495,35 -> 495,36 -> 497,36 -> 497,29 -> 497,36 -> 499,36 -> 499,31 -> 499,36
|
||||
489,36 -> 489,29 -> 489,36 -> 491,36 -> 491,34 -> 491,36 -> 493,36 -> 493,26 -> 493,36 -> 495,36 -> 495,35 -> 495,36 -> 497,36 -> 497,29 -> 497,36 -> 499,36 -> 499,31 -> 499,36
|
||||
534,120 -> 534,110 -> 534,120 -> 536,120 -> 536,115 -> 536,120 -> 538,120 -> 538,117 -> 538,120 -> 540,120 -> 540,119 -> 540,120 -> 542,120 -> 542,116 -> 542,120
|
||||
489,36 -> 489,29 -> 489,36 -> 491,36 -> 491,34 -> 491,36 -> 493,36 -> 493,26 -> 493,36 -> 495,36 -> 495,35 -> 495,36 -> 497,36 -> 497,29 -> 497,36 -> 499,36 -> 499,31 -> 499,36
|
||||
522,104 -> 527,104
|
||||
556,135 -> 561,135 -> 561,134
|
||||
560,154 -> 565,154
|
||||
564,156 -> 569,156
|
||||
510,90 -> 510,92 -> 502,92 -> 502,97 -> 516,97 -> 516,92 -> 515,92 -> 515,90
|
||||
510,90 -> 510,92 -> 502,92 -> 502,97 -> 516,97 -> 516,92 -> 515,92 -> 515,90
|
||||
508,104 -> 513,104
|
||||
541,127 -> 546,127
|
||||
507,69 -> 512,69
|
||||
521,84 -> 521,82 -> 521,84 -> 523,84 -> 523,82 -> 523,84 -> 525,84 -> 525,77 -> 525,84
|
||||
521,84 -> 521,82 -> 521,84 -> 523,84 -> 523,82 -> 523,84 -> 525,84 -> 525,77 -> 525,84
|
||||
497,39 -> 497,43 -> 493,43 -> 493,49 -> 506,49 -> 506,43 -> 501,43 -> 501,39
|
||||
534,120 -> 534,110 -> 534,120 -> 536,120 -> 536,115 -> 536,120 -> 538,120 -> 538,117 -> 538,120 -> 540,120 -> 540,119 -> 540,120 -> 542,120 -> 542,116 -> 542,120
|
||||
511,102 -> 516,102
|
||||
504,62 -> 504,58 -> 504,62 -> 506,62 -> 506,54 -> 506,62 -> 508,62 -> 508,55 -> 508,62
|
||||
553,138 -> 553,141 -> 546,141 -> 546,149 -> 558,149 -> 558,141 -> 557,141 -> 557,138
|
||||
534,120 -> 534,110 -> 534,120 -> 536,120 -> 536,115 -> 536,120 -> 538,120 -> 538,117 -> 538,120 -> 540,120 -> 540,119 -> 540,120 -> 542,120 -> 542,116 -> 542,120
|
||||
497,13 -> 497,16 -> 496,16 -> 496,23 -> 511,23 -> 511,16 -> 503,16 -> 503,13
|
||||
504,62 -> 504,58 -> 504,62 -> 506,62 -> 506,54 -> 506,62 -> 508,62 -> 508,55 -> 508,62
|
||||
489,36 -> 489,29 -> 489,36 -> 491,36 -> 491,34 -> 491,36 -> 493,36 -> 493,26 -> 493,36 -> 495,36 -> 495,35 -> 495,36 -> 497,36 -> 497,29 -> 497,36 -> 499,36 -> 499,31 -> 499,36
|
||||
497,39 -> 497,43 -> 493,43 -> 493,49 -> 506,49 -> 506,43 -> 501,43 -> 501,39
|
||||
554,158 -> 559,158
|
||||
489,36 -> 489,29 -> 489,36 -> 491,36 -> 491,34 -> 491,36 -> 493,36 -> 493,26 -> 493,36 -> 495,36 -> 495,35 -> 495,36 -> 497,36 -> 497,29 -> 497,36 -> 499,36 -> 499,31 -> 499,36
|
||||
506,65 -> 511,65
|
||||
497,13 -> 497,16 -> 496,16 -> 496,23 -> 511,23 -> 511,16 -> 503,16 -> 503,13
|
||||
550,156 -> 555,156
|
||||
521,84 -> 521,82 -> 521,84 -> 523,84 -> 523,82 -> 523,84 -> 525,84 -> 525,77 -> 525,84
|
||||
504,62 -> 504,58 -> 504,62 -> 506,62 -> 506,54 -> 506,62 -> 508,62 -> 508,55 -> 508,62
|
||||
489,36 -> 489,29 -> 489,36 -> 491,36 -> 491,34 -> 491,36 -> 493,36 -> 493,26 -> 493,36 -> 495,36 -> 495,35 -> 495,36 -> 497,36 -> 497,29 -> 497,36 -> 499,36 -> 499,31 -> 499,36
|
||||
553,138 -> 553,141 -> 546,141 -> 546,149 -> 558,149 -> 558,141 -> 557,141 -> 557,138
|
||||
497,13 -> 497,16 -> 496,16 -> 496,23 -> 511,23 -> 511,16 -> 503,16 -> 503,13
|
||||
561,158 -> 566,158
|
||||
497,39 -> 497,43 -> 493,43 -> 493,49 -> 506,49 -> 506,43 -> 501,43 -> 501,39
|
||||
540,123 -> 545,123
|
||||
489,36 -> 489,29 -> 489,36 -> 491,36 -> 491,34 -> 491,36 -> 493,36 -> 493,26 -> 493,36 -> 495,36 -> 495,35 -> 495,36 -> 497,36 -> 497,29 -> 497,36 -> 499,36 -> 499,31 -> 499,36
|
||||
553,138 -> 553,141 -> 546,141 -> 546,149 -> 558,149 -> 558,141 -> 557,141 -> 557,138
|
||||
510,90 -> 510,92 -> 502,92 -> 502,97 -> 516,97 -> 516,92 -> 515,92 -> 515,90
|
||||
514,86 -> 514,87 -> 530,87 -> 530,86
|
||||
489,36 -> 489,29 -> 489,36 -> 491,36 -> 491,34 -> 491,36 -> 493,36 -> 493,26 -> 493,36 -> 495,36 -> 495,35 -> 495,36 -> 497,36 -> 497,29 -> 497,36 -> 499,36 -> 499,31 -> 499,36
|
||||
534,120 -> 534,110 -> 534,120 -> 536,120 -> 536,115 -> 536,120 -> 538,120 -> 538,117 -> 538,120 -> 540,120 -> 540,119 -> 540,120 -> 542,120 -> 542,116 -> 542,120
|
||||
500,69 -> 505,69
|
||||
514,100 -> 519,100
|
||||
518,102 -> 523,102
|
||||
504,62 -> 504,58 -> 504,62 -> 506,62 -> 506,54 -> 506,62 -> 508,62 -> 508,55 -> 508,62
|
||||
534,120 -> 534,110 -> 534,120 -> 536,120 -> 536,115 -> 536,120 -> 538,120 -> 538,117 -> 538,120 -> 540,120 -> 540,119 -> 540,120 -> 542,120 -> 542,116 -> 542,120
|
||||
489,36 -> 489,29 -> 489,36 -> 491,36 -> 491,34 -> 491,36 -> 493,36 -> 493,26 -> 493,36 -> 495,36 -> 495,35 -> 495,36 -> 497,36 -> 497,29 -> 497,36 -> 499,36 -> 499,31 -> 499,36
|
||||
504,62 -> 504,58 -> 504,62 -> 506,62 -> 506,54 -> 506,62 -> 508,62 -> 508,55 -> 508,62
|
||||
534,120 -> 534,110 -> 534,120 -> 536,120 -> 536,115 -> 536,120 -> 538,120 -> 538,117 -> 538,120 -> 540,120 -> 540,119 -> 540,120 -> 542,120 -> 542,116 -> 542,120
|
||||
553,154 -> 558,154
|
||||
503,67 -> 508,67
|
||||
489,36 -> 489,29 -> 489,36 -> 491,36 -> 491,34 -> 491,36 -> 493,36 -> 493,26 -> 493,36 -> 495,36 -> 495,35 -> 495,36 -> 497,36 -> 497,29 -> 497,36 -> 499,36 -> 499,31 -> 499,36
|
||||
510,90 -> 510,92 -> 502,92 -> 502,97 -> 516,97 -> 516,92 -> 515,92 -> 515,90
|
||||
504,62 -> 504,58 -> 504,62 -> 506,62 -> 506,54 -> 506,62 -> 508,62 -> 508,55 -> 508,62
|
||||
556,135 -> 561,135 -> 561,134
|
||||
489,36 -> 489,29 -> 489,36 -> 491,36 -> 491,34 -> 491,36 -> 493,36 -> 493,26 -> 493,36 -> 495,36 -> 495,35 -> 495,36 -> 497,36 -> 497,29 -> 497,36 -> 499,36 -> 499,31 -> 499,36
|
||||
497,13 -> 497,16 -> 496,16 -> 496,23 -> 511,23 -> 511,16 -> 503,16 -> 503,13
|
||||
557,156 -> 562,156
|
||||
553,138 -> 553,141 -> 546,141 -> 546,149 -> 558,149 -> 558,141 -> 557,141 -> 557,138
|
||||
510,90 -> 510,92 -> 502,92 -> 502,97 -> 516,97 -> 516,92 -> 515,92 -> 515,90
|
||||
521,84 -> 521,82 -> 521,84 -> 523,84 -> 523,82 -> 523,84 -> 525,84 -> 525,77 -> 525,84
|
||||
511,71 -> 516,71
|
||||
489,36 -> 489,29 -> 489,36 -> 491,36 -> 491,34 -> 491,36 -> 493,36 -> 493,26 -> 493,36 -> 495,36 -> 495,35 -> 495,36 -> 497,36 -> 497,29 -> 497,36 -> 499,36 -> 499,31 -> 499,36
|
||||
534,120 -> 534,110 -> 534,120 -> 536,120 -> 536,115 -> 536,120 -> 538,120 -> 538,117 -> 538,120 -> 540,120 -> 540,119 -> 540,120 -> 542,120 -> 542,116 -> 542,120
|
||||
534,120 -> 534,110 -> 534,120 -> 536,120 -> 536,115 -> 536,120 -> 538,120 -> 538,117 -> 538,120 -> 540,120 -> 540,119 -> 540,120 -> 542,120 -> 542,116 -> 542,120
|
||||
497,39 -> 497,43 -> 493,43 -> 493,49 -> 506,49 -> 506,43 -> 501,43 -> 501,39
|
||||
524,107 -> 538,107 -> 538,106
|
||||
547,158 -> 552,158
|
||||
497,13 -> 497,16 -> 496,16 -> 496,23 -> 511,23 -> 511,16 -> 503,16 -> 503,13
|
||||
510,90 -> 510,92 -> 502,92 -> 502,97 -> 516,97 -> 516,92 -> 515,92 -> 515,90
|
||||
497,39 -> 497,43 -> 493,43 -> 493,49 -> 506,49 -> 506,43 -> 501,43 -> 501,39
|
||||
504,71 -> 509,71
|
||||
2
inputs/14a.txt
Normal file
2
inputs/14a.txt
Normal file
@ -0,0 +1,2 @@
|
||||
498,4 -> 498,6 -> 496,6
|
||||
503,4 -> 502,4 -> 502,9 -> 494,9
|
||||
163
src/14.cs
Normal file
163
src/14.cs
Normal file
@ -0,0 +1,163 @@
|
||||
namespace aoc2022;
|
||||
|
||||
internal class Day14 : Day
|
||||
{
|
||||
private record point(int x, int y);
|
||||
// Parses a string in the form "x,y" into a point
|
||||
private static point ParsePoint(string str)
|
||||
{
|
||||
var parts = str.Trim().Split(',');
|
||||
if (parts.Length != 2)
|
||||
{
|
||||
throw new Exception($"found {parts.Length} pieces of input string, expected 2");
|
||||
}
|
||||
|
||||
var x = int.Parse(parts[0].Trim());
|
||||
var y = int.Parse(parts[1].Trim());
|
||||
return new point(x, y);
|
||||
}
|
||||
|
||||
enum cellType
|
||||
{
|
||||
sand,
|
||||
wall,
|
||||
}
|
||||
|
||||
private readonly Dictionary<point, cellType> grid = new();
|
||||
|
||||
internal override void Parse()
|
||||
{
|
||||
foreach (var line in Util.Parsing.ReadAllLines("14"))
|
||||
{
|
||||
point? lastPoint = null;
|
||||
var parts = line.Split(" -> ");
|
||||
foreach (var part in parts)
|
||||
{
|
||||
var p = ParsePoint(part);
|
||||
if (lastPoint == null)
|
||||
{
|
||||
lastPoint = p;
|
||||
continue;
|
||||
}
|
||||
|
||||
if (p.x != lastPoint.x)
|
||||
{
|
||||
for (int i = lastPoint.x; i != p.x; i += Math.Sign(p.x - lastPoint.x))
|
||||
{
|
||||
grid[p with {x = i}] = cellType.wall;
|
||||
}
|
||||
}
|
||||
else if (p.y != lastPoint.y)
|
||||
{
|
||||
for (int i = lastPoint.y; i != p.y; i += Math.Sign(p.y - lastPoint.y))
|
||||
{
|
||||
grid[p with {y = i}] = cellType.wall;
|
||||
}
|
||||
}
|
||||
grid[p] = cellType.wall;
|
||||
lastPoint = p;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
internal override string Part1()
|
||||
{
|
||||
var g = new Dictionary<point, cellType>(grid);
|
||||
int lowestY = g.MaxBy(pair => pair.Key.y).Key.y;
|
||||
|
||||
point dropPoint = new point(500, 0);
|
||||
bool hitVoid = false;
|
||||
int numDroppedSand = 0;
|
||||
while (!hitVoid)
|
||||
{
|
||||
bool atRest = false;
|
||||
point sandLoc = dropPoint with {y = dropPoint.y + 1};
|
||||
while (!atRest)
|
||||
{
|
||||
var nextPoint = sandLoc with {y = sandLoc.y + 1};
|
||||
if (g.ContainsKey(nextPoint))
|
||||
{
|
||||
nextPoint = nextPoint with {x = sandLoc.x - 1};
|
||||
if (g.ContainsKey(nextPoint))
|
||||
{
|
||||
nextPoint = nextPoint with {x = sandLoc.x + 1};
|
||||
if (g.ContainsKey(nextPoint))
|
||||
{
|
||||
atRest = true;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (!atRest)
|
||||
{
|
||||
sandLoc = nextPoint;
|
||||
}
|
||||
|
||||
if (nextPoint.y > lowestY)
|
||||
{
|
||||
hitVoid = true;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (!hitVoid)
|
||||
{
|
||||
numDroppedSand++;
|
||||
g[sandLoc] = cellType.sand;
|
||||
}
|
||||
}
|
||||
|
||||
return $"Sand dropped before hitting the void: <+white>{numDroppedSand}";
|
||||
}
|
||||
|
||||
internal override string Part2()
|
||||
{
|
||||
var g = new Dictionary<point, cellType>(grid);
|
||||
int lowestY = g.MaxBy(pair => pair.Key.y).Key.y;
|
||||
int floor = 2 + lowestY;
|
||||
|
||||
point dropPoint = new point(500, 0);
|
||||
int numDroppedSand = 0;
|
||||
while (true)
|
||||
{
|
||||
bool atRest = false;
|
||||
point sandLoc = dropPoint;
|
||||
while (!atRest)
|
||||
{
|
||||
var nextPoint = sandLoc with {y = sandLoc.y + 1};
|
||||
if (nextPoint.y == floor)
|
||||
{
|
||||
break;
|
||||
}
|
||||
|
||||
if (g.ContainsKey(nextPoint))
|
||||
{
|
||||
nextPoint = nextPoint with {x = sandLoc.x - 1};
|
||||
if (g.ContainsKey(nextPoint))
|
||||
{
|
||||
nextPoint = nextPoint with {x = sandLoc.x + 1};
|
||||
if (g.ContainsKey(nextPoint))
|
||||
{
|
||||
atRest = true;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (!atRest)
|
||||
{
|
||||
sandLoc = nextPoint;
|
||||
}
|
||||
}
|
||||
|
||||
g[sandLoc] = cellType.sand;
|
||||
numDroppedSand++;
|
||||
|
||||
if (sandLoc == dropPoint)
|
||||
{
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
return $"Sand dropped before filling the space: <+white>{numDroppedSand}";
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user