Day 5, part 1

AdventOfCode.sln

@@ -5,8 +5,6 @@ VisualStudioVersion = 17.4.33110.190
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "AdventOfCode", "AdventOfCode\AdventOfCode.csproj", "{CAAB9EC2-0787-4CBC-87E3-4529BFB56B3F}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "AOC2023", "AOC2023\AOC2023.csproj", "{DC0609BD-5AF8-4347-A424-67D9A0AE38A3}"
-EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -17,10 +15,6 @@ Global
 		{CAAB9EC2-0787-4CBC-87E3-4529BFB56B3F}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{CAAB9EC2-0787-4CBC-87E3-4529BFB56B3F}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{CAAB9EC2-0787-4CBC-87E3-4529BFB56B3F}.Release|Any CPU.Build.0 = Release|Any CPU
-		{DC0609BD-5AF8-4347-A424-67D9A0AE38A3}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{DC0609BD-5AF8-4347-A424-67D9A0AE38A3}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{DC0609BD-5AF8-4347-A424-67D9A0AE38A3}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{DC0609BD-5AF8-4347-A424-67D9A0AE38A3}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

AdventOfCode/AdventOfCode.csproj

@@ -48,6 +48,8 @@
 	<None Remove="problems\aoc2023\day3\sara.txt" />
 	<None Remove="problems\aoc2023\day4\input.txt" />
 	<None Remove="problems\aoc2023\day4\sample.txt" />
+	<None Remove="problems\aoc2023\day5\input.txt" />
+	<None Remove="problems\aoc2023\day5\sample.txt" />
   </ItemGroup>
 
 

AdventOfCode/Problems/AOC2023/Day5/CategoryEvaluator.cs

@@ -0,0 +1,73 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Runtime.CompilerServices;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AdventOfCode.Problems.AOC2023.Day5;
+internal class CategoryEvaluator
+{
+	public Dictionary<Category, CategoryMapper> destinations = [];
+
+	public CategoryEvaluator(CategoryMapper[] mappers)
+	{
+		destinations = mappers.ToDictionary(m => m.Destination);
+	}
+
+	public long Evaluate(Category source, long sourceValue, Category destination)
+	{
+		var mappers = new List<CategoryMapper>();
+		var curMapper = destinations[destination];
+		do
+		{
+			mappers.Add(curMapper);
+			curMapper = destinations[curMapper.Source];
+		} while (curMapper.Source != source);
+		mappers.Add(destinations[mappers.Last().Source]);
+		mappers.Reverse();
+		var result = sourceValue;
+		foreach (var mapper in mappers)
+		{
+			result = mapper.Evaluate(result);
+		}
+		return result;
+	}
+
+	public (long start, long end)[] Evaluate(Category source, (long start, long end)[] seeds, Category destination)
+	{
+		var mappers = new List<CategoryMapper>();
+		var curMapper = destinations[destination];
+		do
+		{
+			mappers.Add(curMapper);
+			curMapper = destinations[curMapper.Source];
+		} while (curMapper.Source != source);
+		mappers.Add(destinations[mappers.Last().Source]);
+		mappers.Reverse();
+		var result = seeds;
+		foreach (var mapper in mappers)
+		{
+			result = mapper.Evaluate(result);
+		}
+		return result.Distinct().ToArray();
+	}
+
+	public CategoryMapper GetCategoryMapper(Category destination)
+	{
+		return destinations[destination];
+	}
+
+
+	public enum Category
+	{
+		Seed,
+		Soil,
+		Fertilizer,
+		Water,
+		Light,
+		Temperature,
+		Humidity,
+		Location
+	}
+}

AdventOfCode/Problems/AOC2023/Day5/CategoryMapper.cs

@@ -0,0 +1,88 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AdventOfCode.Problems.AOC2023.Day5;
+internal class CategoryMapper
+{
+	public CategoryEvaluator.Category Source { get; }
+	public CategoryEvaluator.Category Destination { get; }
+	public long[] DestinationStart { get; }
+	public long[] DestinationEnd { get; }
+	public long[] SourceStart { get; }
+	public long[] SourceEnd { get; }
+	public long[] RangeLength { get; }
+	public long[] Gap { get; }
+
+	public CategoryMapper(CategoryEvaluator.Category source, CategoryEvaluator.Category destination, long[] destinationStart, long[] sourceStart, long[] length)
+	{
+		Source = source;
+		Destination = destination;
+		DestinationStart = destinationStart;
+		DestinationEnd =  destinationStart.Select((v, i) => v + length[i]).ToArray();
+		SourceStart = sourceStart;
+		SourceEnd = sourceStart.Select((v, i) => v + length[i]).ToArray();
+		RangeLength = length;
+		Gap = sourceStart.Select((v, i) => destinationStart[i] - v).ToArray();
+	}
+
+	public static CategoryMapper Parse(string categoryData)
+	{
+		var lines = categoryData.Split("\r\n");
+		var names = lines[0].Split(' ')[0].Split('-');
+		var source = Enum.Parse<CategoryEvaluator.Category>(names[0], true);
+		var dst = Enum.Parse<CategoryEvaluator.Category>(names[^1], true);
+
+		var mappingData = lines[1..].Select(ln => ln.Split(' ').Select(long.Parse).ToArray());
+		var dStart = mappingData.Select(d => d[0]).ToArray();
+		var sStart = mappingData.Select(d => d[1]).ToArray();
+		var len = mappingData.Select(d => d[2]).ToArray();
+		return new CategoryMapper(source, dst, dStart, sStart, len);
+
+	}
+
+	public long Evaluate(long value)
+	{
+		for (int i = 0; i < DestinationStart.Length; i++)
+		{
+			if (SourceStart[i] > value)
+				continue;
+			if (SourceEnd[i] < value)
+				continue;
+			return value + Gap[i];
+		}
+		return value;
+	}
+
+	public (long start, long end)[] Evaluate((long start, long end)[] ranges)
+	{
+		var result = new List<(long start, long end)>();
+		for (int i = 0; i < DestinationStart.Length; i++)
+		{
+			result.AddRange(ranges.SelectMany(r => SubdivideRange(r, (SourceStart[i], SourceEnd[i]))));
+		}
+		return result.Distinct().Select(v => (Evaluate(v.start), Evaluate(v.end))).ToArray();
+	}
+
+	public static (long start, long end)[] SubdivideRange((long start, long end) source, (long start, long end) dst)
+	{
+		if (source.start >= dst.start && source.end <= dst.end)
+			return [source];
+		if(source.end < dst.end)
+			return [source];
+		if(source.start >  dst.start)
+			return [source];
+		
+		if(source.start < dst.start)
+			return [(source.start, dst.start - 1), (dst.start, source.end), (source.end + 1, dst.end)];
+		else
+			return [(dst.start, source.start - 1), (source.start, dst.end), (dst.end + 1, source.end)];
+	}
+
+	public override string ToString()
+	{
+		return $"{Source} -> {Destination}";
+	}
+}

AdventOfCode/Problems/AOC2023/Day5/SeedFertilizer.cs

@@ -0,0 +1,38 @@
+using AdventOfCode.Runner.Attributes;
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AdventOfCode.Problems.AOC2023.Day5;
+[ProblemInfo(2023, 5, "If You Give A Seed A Fertilizer")]
+internal class SeedFertilizer : Problem<long, long>
+{
+	private long[] _seeds = [];
+	private CategoryEvaluator _evaluator = new ([]);
+
+	public override void LoadInput()
+	{
+		var data = ReadInputText("sample.txt");
+		var sections = data.Split("\r\n\r\n");
+		_seeds = sections[0].Split(": ")[1].Split(" ").Select(long.Parse).ToArray();
+
+		var mappers = sections[1..].Select(CategoryMapper.Parse).ToArray();
+		_evaluator = new CategoryEvaluator(mappers);
+	}
+
+	public override void CalculatePart1()
+	{
+		var evaludated = _seeds.Select(s => _evaluator.Evaluate(CategoryEvaluator.Category.Seed, s, CategoryEvaluator.Category.Location));
+		Part1 = evaludated.Min();
+	}
+
+	public override void CalculatePart2()
+	{
+		var splitRanges = _evaluator.Evaluate(CategoryEvaluator.Category.Seed, _seeds.Chunk(2).Select(s => (s[0], s[0] + s[1])).ToArray(), CategoryEvaluator.Category.Location);
+		
+	}
+
+}

AdventOfCode/Problems/AOC2023/Day5/input.txt

@@ -0,0 +1,242 @@
+seeds: 222541566 218404460 670428364 432472902 2728902838 12147727 3962570697 52031641 2849288350 113747257 3648852659 73423293 4036058422 190602154 1931540843 584314999 3344622241 180428346 1301166628 310966761
+
+seed-to-soil map:
+357888202 777841571 45089383
+1091769591 2222785614 212172358
+747211456 668867483 108974088
+635547523 229171508 111663933
+1573402842 2067459960 102412403
+4289698662 1148443045 5268634
+2395735068 1322252554 161006801
+0 205577967 4476015
+57955189 635249899 15743396
+402977585 0 26133741
+464695488 412326242 24494890
+2966156314 1301354919 3630744
+42819069 472405294 15136120
+3261136238 2193516168 29269446
+2394617262 1304985663 1117806
+3573311427 1725292988 265415981
+3184385247 1990708969 76750991
+36407558 487541414 6411511
+178443976 26133741 179444226
+4233901482 2444128986 55797180
+2556741869 2169872363 23643805
+429111326 436821132 35584162
+4476015 622435882 12814017
+2830010004 4158820986 136146310
+1315195976 890236179 258206866
+17290032 210053982 19117526
+2969787058 3404926809 66954949
+106953175 340835441 71490801
+3307388168 3846327739 265923259
+2580385674 3488864242 249624330
+3036742007 1153711679 147643240
+3290405684 3471881758 16982484
+4187331494 4112250998 46569988
+2378468177 1306103469 16149085
+1308440551 2936378300 6755425
+73698585 822930954 33254590
+489190378 493952925 128482957
+1675815245 1483259355 242033633
+3849072207 2598119013 338259287
+1917848878 2944307510 460619299
+1303941949 885737577 4498602
+3847898422 2943133725 1173785
+617673335 650993295 17874188
+993576744 2499926166 98192847
+3838727408 2434957972 9171014
+885737577 3738488572 107839167
+
+soil-to-fertilizer map:
+146677673 622659563 93167301
+1157991666 1089969349 162939558
+3393833863 2765693883 993201
+1089969349 2528480087 47120899
+1536155605 1455175707 97002831
+77735382 829301434 68942291
+519819619 496909514 125750049
+1633158436 2638516375 127177508
+2914682387 1777568650 8769904
+1907493268 2936307342 209538906
+1523198024 2370144872 12957581
+398047045 375136940 121772574
+3155987938 1552178538 225390112
+2722437809 1786338554 7281125
+2405956502 1793619679 316481307
+4079025823 3374787635 121920527
+1020706608 898243725 11125486
+1320931224 1252908907 202266800
+4200946350 4161901201 91091718
+2872708010 4252992919 23854892
+2896562902 4276847811 18119485
+2923452291 2766687084 169620258
+1760335944 2261396563 6024603
+362307857 715826864 35739188
+4292038068 2525550859 2929228
+2345973561 2310161931 59982941
+3426288597 3496708162 124839972
+2768316300 2383102453 51488089
+2729718934 2455491960 38597366
+1137090248 2434590542 20901418
+2819804389 2110100986 52903621
+3394827064 2494089326 31461533
+1809101312 2163004607 98391956
+3551128569 3621548134 527897254
+1766360547 2267421166 42740765
+2117032174 3145846248 228941387
+645569668 0 375136940
+0 751566052 77735382
+239844974 925431556 122462883
+3093072549 2575600986 62915389
+1031832094 909369211 16062345
+3381378050 4149445388 12455813
+
+fertilizer-to-water map:
+1853863567 1354319094 57762399
+1963297596 2892133710 74523026
+351355449 2825239457 1556531
+4263216859 3376413885 31750437
+2555584073 3055976839 118124436
+2730998967 1343408443 10910651
+1638376751 979599391 153825342
+978844708 811605824 82508702
+1911625966 894114526 6715081
+3367668240 3408164322 203176531
+2729654714 3174101275 1344253
+3200258520 795809557 15796267
+1595497633 1782591008 42879118
+2683440491 1412081493 46214223
+1958950306 101242881 4347290
+2831229721 242278649 124658639
+1792202093 734148083 61661474
+2741909618 2966656736 89320103
+1918341047 3175445528 40609259
+2955888360 1825470126 7069388
+3594735667 3635231749 181844678
+2673708509 412658344 9731982
+2962957748 1832539514 237300772
+530398473 105590171 136688478
+1177133692 366937288 45721056
+27883870 2489305043 153451249
+352911980 2711533741 113705716
+3570844771 3611340853 23890896
+466617696 900829607 30422191
+0 2461421173 27883870
+3776580345 3360472089 15941796
+4207783288 3817076427 55433571
+2429401509 1249205015 60844842
+181335119 2642756292 68777449
+1061353410 1133424733 115780282
+667086951 422390326 311757757
+2490246351 2826795988 65337722
+1222854748 931251798 48347593
+1271202341 1458295716 324295292
+3360472089 4287771145 7196151
+497039887 1310049857 33358586
+2037820622 2069840286 391580887
+250112568 0 101242881
+3792522141 3872509998 415261147
+
+water-to-light map:
+3392354816 2147745556 27501466
+1878871951 1725889381 75406426
+173441126 161378219 150090654
+1018905669 635099142 165518615
+4087062942 1662057640 30823678
+353004829 1119237890 172394750
+1845863888 1692881318 33008063
+153206340 867143452 20234786
+2604702405 4037570714 169107986
+1617110925 3533554525 169325605
+2559755690 1617110925 44946715
+600097153 912061633 124651296
+3946007322 3319554557 141055620
+2465332301 3460610177 72944348
+724748449 340941922 294157220
+3044149982 2175247022 348204834
+2773810391 2633005641 270339591
+525399579 153206340 8171879
+2139921020 3702880130 325411281
+3419856282 1978376483 109941715
+1954278377 2523451856 88074744
+2538276649 2611526600 21479041
+4117886620 1801295807 177080676
+2051632424 4206678700 88288596
+2042353121 4028291411 9279303
+3529797997 2903345232 416209325
+1786436530 2088318198 59427358
+533571458 800617757 66525695
+1184424284 1036712929 82524961
+1266949245 887378238 24683395
+323531780 311468873 29473049
+
+light-to-temperature map:
+2119656026 2694441768 51718564
+582739623 515860164 331142829
+3188466529 3433161801 686443431
+1208858214 1852905471 223488011
+2984018793 2746160332 20792175
+114072893 923500840 335770555
+1078092281 1568663312 55313164
+1528379045 847002993 76497847
+3159539374 3404234646 28927155
+1604876892 44343574 471516590
+3874909960 2119656026 229635679
+913882452 1404453483 164209829
+449843448 1720009296 132896175
+3004810968 2539713362 154728406
+1432346225 1623976476 96032820
+2171374590 4119605232 175362064
+2827425140 3247640993 156593653
+1177749019 1259271395 31109195
+2346736654 2766952507 480688486
+1133405445 0 44343574
+0 1290380590 114072893
+4104545639 2349291705 190421657
+
+temperature-to-humidity map:
+4032879828 4294798436 168860
+4033048688 927598400 261918608
+0 101834652 315424112
+3415479218 1417189709 517560635
+3933039853 4175022329 99839975
+2470365900 2513768139 498846371
+2059440409 4274862304 19936132
+2969212271 2295173893 218594246
+315424112 417258764 36139086
+351563198 0 101834652
+927598400 1934750344 360423549
+3187806517 1189517008 66595582
+3254402099 1256112590 161077119
+2079376541 3784032970 390989359
+1288021949 3012614510 771418460
+
+humidity-to-location map:
+1627636687 2047220773 460084702
+2744823277 560934787 184170906
+3485120052 3437939311 342343442
+3959782982 3213426504 221968093
+1599327759 745105693 28308928
+2311378749 773414621 172869650
+4292422582 3435394597 2544714
+4181751075 3780282753 110671507
+2484248399 1371539463 260574878
+944796451 1771589193 23241552
+2985880462 4036578393 258388903
+896379083 2507305475 48417368
+2298631675 0 12747074
+237282755 12747074 435619394
+812377001 1310308951 61230512
+1486759440 448366468 112568319
+3827463494 2985880462 132319488
+3389893498 3118199950 95226554
+0 1073026196 237282755
+672902149 1632114341 139474852
+3244269365 3890954260 145624133
+1103441152 2555722843 279347933
+2181644796 1794830745 116986879
+873607513 1050254626 22771570
+968038003 1911817624 135403149
+2087721389 2835070776 93923407
+1382789085 946284271 103970355

AdventOfCode/Problems/AOC2023/Day5/sample.txt

@@ -0,0 +1,33 @@
+seeds: 79 14 55 13
+
+seed-to-soil map:
+50 98 2
+52 50 48
+
+soil-to-fertilizer map:
+0 15 37
+37 52 2
+39 0 15
+
+fertilizer-to-water map:
+49 53 8
+0 11 42
+42 0 7
+57 7 4
+
+water-to-light map:
+88 18 7
+18 25 70
+
+light-to-temperature map:
+45 77 23
+81 45 19
+68 64 13
+
+temperature-to-humidity map:
+0 69 1
+1 0 69
+
+humidity-to-location map:
+60 56 37
+56 93 4