diff --git a/AdventOfCode.sln b/AdventOfCode.sln index f7a0830..a6ac603 100644 --- a/AdventOfCode.sln +++ b/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 diff --git a/AdventOfCode/AdventOfCode.csproj b/AdventOfCode/AdventOfCode.csproj index c282ccf..e28e0ae 100644 --- a/AdventOfCode/AdventOfCode.csproj +++ b/AdventOfCode/AdventOfCode.csproj @@ -48,6 +48,8 @@ + + diff --git a/AdventOfCode/Problems/AOC2023/Day5/CategoryEvaluator.cs b/AdventOfCode/Problems/AOC2023/Day5/CategoryEvaluator.cs new file mode 100644 index 0000000..d7a1135 --- /dev/null +++ b/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 destinations = []; + + public CategoryEvaluator(CategoryMapper[] mappers) + { + destinations = mappers.ToDictionary(m => m.Destination); + } + + public long Evaluate(Category source, long sourceValue, Category destination) + { + var mappers = new List(); + 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(); + 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 + } +} diff --git a/AdventOfCode/Problems/AOC2023/Day5/CategoryMapper.cs b/AdventOfCode/Problems/AOC2023/Day5/CategoryMapper.cs new file mode 100644 index 0000000..927cc2e --- /dev/null +++ b/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(names[0], true); + var dst = Enum.Parse(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}"; + } +} diff --git a/AdventOfCode/Problems/AOC2023/Day5/SeedFertilizer.cs b/AdventOfCode/Problems/AOC2023/Day5/SeedFertilizer.cs new file mode 100644 index 0000000..075ec37 --- /dev/null +++ b/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 +{ + 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); + + } + +} diff --git a/AdventOfCode/Problems/AOC2023/Day5/input.txt b/AdventOfCode/Problems/AOC2023/Day5/input.txt new file mode 100644 index 0000000..b0322d1 --- /dev/null +++ b/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 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/dev/null +++ b/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 \ No newline at end of file