diff --git a/AdventOfCode2023/AdventOfCode2023.csproj b/AdventOfCode2023/AdventOfCode2023.csproj index 0fd534a..ef8fcbb 100644 --- a/AdventOfCode2023/AdventOfCode2023.csproj +++ b/AdventOfCode2023/AdventOfCode2023.csproj @@ -12,6 +12,7 @@ + @@ -19,6 +20,7 @@ + diff --git a/AdventOfCode2023/Day5/Day5_1.cs b/AdventOfCode2023/Day5/Day5_1.cs new file mode 100644 index 0000000..ba8f2a8 --- /dev/null +++ b/AdventOfCode2023/Day5/Day5_1.cs @@ -0,0 +1,81 @@ +using System; +using System.Collections.Generic; +using System.Linq; +using System.Text; +using System.Text.RegularExpressions; +using System.Threading.Tasks; + +namespace AdventOfCode2023.Day5 +{ + public class Day5_1 : DayBase + { + string input = string.Empty; + + Regex rxSeeds = new Regex(@"(?<=seeds:[\s\d]+)\d+"); + Regex rxSeedToSoil = new Regex(@"(?<=seed-to-soil map:\r\n(\d+\s+\d+\s+\d+\r\n)*)(?\d+)\s+(?\d+)\s+(?\d+)"); + Regex rxSoilToFertilizer = new Regex(@"(?<=soil-to-fertilizer map:\r\n(\d+\s+\d+\s+\d+\r\n)*)(?\d+)\s+(?\d+)\s+(?\d+)"); + Regex rxFertilizerToWater = new Regex(@"(?<=fertilizer-to-water map:\r\n(\d+\s+\d+\s+\d+\r\n)*)(?\d+)\s+(?\d+)\s+(?\d+)"); + Regex rxWaterToLight = new Regex(@"(?<=water-to-light map:\r\n(\d+\s+\d+\s+\d+\r\n)*)(?\d+)\s+(?\d+)\s+(?\d+)"); + Regex rxLightToTemperature = new Regex(@"(?<=light-to-temperature map:\r\n(\d+\s+\d+\s+\d+\r\n)*)(?\d+)\s+(?\d+)\s+(?\d+)"); + Regex rxTemperatureToHumidity = new Regex(@"(?<=temperature-to-humidity map:\r\n(\d+\s+\d+\s+\d+\r\n)*)(?\d+)\s+(?\d+)\s+(?\d+)"); + Regex rxHumidityToLocation = new Regex(@"(?<=humidity-to-location map:\r\n(\d+\s+\d+\s+\d+\r\n)*)(?\d+)\s+(?\d+)\s+(?\d+)"); + + public Day5_1() + { + input = GetInput("Day5.txt"); + } + + public Day5_1(string testInput) + { + input = testInput; + } + + public override string Execute() + { + List seeds = rxSeeds.Matches(input).Select(x => ulong.Parse(x.Value)).ToList(); + List seedToSoilMaps = rxSeedToSoil.Matches(input).Select(x => new Map(ulong.Parse(x.Groups["destinationRangeStart"].Value), ulong.Parse(x.Groups["sourceRangeStart"].Value), ulong.Parse(x.Groups["rangeLength"].Value))).ToList(); + List soilToFertilizer = rxSoilToFertilizer.Matches(input).Select(x => new Map(ulong.Parse(x.Groups["destinationRangeStart"].Value), ulong.Parse(x.Groups["sourceRangeStart"].Value), ulong.Parse(x.Groups["rangeLength"].Value))).ToList(); + List fertilizerToWater = rxFertilizerToWater.Matches(input).Select(x => new Map(ulong.Parse(x.Groups["destinationRangeStart"].Value), ulong.Parse(x.Groups["sourceRangeStart"].Value), ulong.Parse(x.Groups["rangeLength"].Value))).ToList(); + List waterToLight = rxWaterToLight.Matches(input).Select(x => new Map(ulong.Parse(x.Groups["destinationRangeStart"].Value), ulong.Parse(x.Groups["sourceRangeStart"].Value), ulong.Parse(x.Groups["rangeLength"].Value))).ToList(); + List lightToTemperature = rxLightToTemperature.Matches(input).Select(x => new Map(ulong.Parse(x.Groups["destinationRangeStart"].Value), ulong.Parse(x.Groups["sourceRangeStart"].Value), ulong.Parse(x.Groups["rangeLength"].Value))).ToList(); + List temperatureToHumidity = rxTemperatureToHumidity.Matches(input).Select(x => new Map(ulong.Parse(x.Groups["destinationRangeStart"].Value), ulong.Parse(x.Groups["sourceRangeStart"].Value), ulong.Parse(x.Groups["rangeLength"].Value))).ToList(); + List humidityToLocation = rxHumidityToLocation.Matches(input).Select(x => new Map(ulong.Parse(x.Groups["destinationRangeStart"].Value), ulong.Parse(x.Groups["sourceRangeStart"].Value), ulong.Parse(x.Groups["rangeLength"].Value))).ToList(); + + List locations = seeds.Select(x => seedToSoilMaps.Find(y => y.IsInSourceRange(x))?.Convert(x) ?? x).Select(x => soilToFertilizer.Find(y => y.IsInSourceRange(x))?.Convert(x) ?? x).Select(x => fertilizerToWater.Find(y => y.IsInSourceRange(x))?.Convert(x) ?? x).Select(x => waterToLight.Find(y => y.IsInSourceRange(x))?.Convert(x) ?? x).Select(x => lightToTemperature.Find(y => y.IsInSourceRange(x))?.Convert(x) ?? x).Select(x => temperatureToHumidity.Find(y => y.IsInSourceRange(x))?.Convert(x) ?? x).Select(x => humidityToLocation.Find(y => y.IsInSourceRange(x))?.Convert(x) ?? x).ToList(); + + return locations.Min().ToString(); + } + } + + internal class Map + { + private ulong _destinationRangeStart; + private ulong _destinationRangeEnd; + private ulong _sourceRangeStart; + private ulong _rangeLength; + private ulong _sourceRangeEnd; + + public ulong DestinationRangeStart { get => _destinationRangeStart; } + public ulong DestinationRangeEnd { get => _destinationRangeEnd; } + + public Map(ulong destinationRangeStart, ulong sourceRangeStart, ulong rangeLength) + { + _destinationRangeStart = destinationRangeStart; + _sourceRangeStart = sourceRangeStart; + _rangeLength = rangeLength; + _sourceRangeEnd = _sourceRangeStart + (_rangeLength - 1); + _destinationRangeEnd = destinationRangeStart + (_rangeLength - 1); + } + + public bool IsInSourceRange(ulong input) => input >= _sourceRangeStart && input <= _sourceRangeEnd; + + public bool IsInDestinationRange(ulong input) => input >= _destinationRangeStart && input <= _destinationRangeEnd; + + public ulong Convert(ulong source) + { + return source + (_destinationRangeStart - _sourceRangeStart); + } + + public (ulong rangeStart, ulong rangeEnd) GetSourceRange() => (_sourceRangeStart, _sourceRangeEnd); + } +} \ No newline at end of file diff --git a/AdventOfCode2023/Day5/Day5_2.cs b/AdventOfCode2023/Day5/Day5_2.cs new file mode 100644 index 0000000..ec1fddf --- /dev/null +++ b/AdventOfCode2023/Day5/Day5_2.cs @@ -0,0 +1,96 @@ +using System; +using System.Collections.Generic; +using System.Dynamic; +using System.Linq; +using System.Text; +using System.Text.RegularExpressions; +using System.Threading.Tasks; + +namespace AdventOfCode2023.Day5 +{ + public class Day5_2 : DayBase + { + string input = string.Empty; + + Regex rxSeeds = new Regex(@"(?<=seeds:[\s\d]+)\d+"); + Regex rxSeedToSoil = new Regex(@"(?<=seed-to-soil map:\r\n(\d+\s+\d+\s+\d+\r\n)*)(?\d+)\s+(?\d+)\s+(?\d+)"); + Regex rxSoilToFertilizer = new Regex(@"(?<=soil-to-fertilizer map:\r\n(\d+\s+\d+\s+\d+\r\n)*)(?\d+)\s+(?\d+)\s+(?\d+)"); + Regex rxFertilizerToWater = new Regex(@"(?<=fertilizer-to-water map:\r\n(\d+\s+\d+\s+\d+\r\n)*)(?\d+)\s+(?\d+)\s+(?\d+)"); + Regex rxWaterToLight = new Regex(@"(?<=water-to-light map:\r\n(\d+\s+\d+\s+\d+\r\n)*)(?\d+)\s+(?\d+)\s+(?\d+)"); + Regex rxLightToTemperature = new Regex(@"(?<=light-to-temperature map:\r\n(\d+\s+\d+\s+\d+\r\n)*)(?\d+)\s+(?\d+)\s+(?\d+)"); + Regex rxTemperatureToHumidity = new Regex(@"(?<=temperature-to-humidity map:\r\n(\d+\s+\d+\s+\d+\r\n)*)(?\d+)\s+(?\d+)\s+(?\d+)"); + Regex rxHumidityToLocation = new Regex(@"(?<=humidity-to-location map:\r\n(\d+\s+\d+\s+\d+\r\n)*)(?\d+)\s+(?\d+)\s+(?\d+)"); + + private readonly object lowestLocationLock = new object(); + private ulong lowestLocation = 0; + + public Day5_2() + { + input = GetInput("Day5.txt"); + } + + public Day5_2(string testInput) + { + input = testInput; + } + + public override string Execute() + { + List entries = rxSeeds.Matches(input).Select(x => ulong.Parse(x.Value)).ToList(); + + var seeds = Enumerable.Range(0, entries.Count) + .GroupBy(x => x / 2) + .Select(x => x.Select(y => entries[y]).ToArray()) + .SelectMany(x => CreateRange(x[0], x[1])) + .Select(x => (x, new ulong())); + + List seedToSoilMaps = rxSeedToSoil.Matches(input).Select(x => new Map(ulong.Parse(x.Groups["destinationRangeStart"].Value), ulong.Parse(x.Groups["sourceRangeStart"].Value), ulong.Parse(x.Groups["rangeLength"].Value))).ToList(); + List soilToFertilizer = rxSoilToFertilizer.Matches(input).Select(x => new Map(ulong.Parse(x.Groups["destinationRangeStart"].Value), ulong.Parse(x.Groups["sourceRangeStart"].Value), ulong.Parse(x.Groups["rangeLength"].Value))).ToList(); + List fertilizerToWater = rxFertilizerToWater.Matches(input).Select(x => new Map(ulong.Parse(x.Groups["destinationRangeStart"].Value), ulong.Parse(x.Groups["sourceRangeStart"].Value), ulong.Parse(x.Groups["rangeLength"].Value))).ToList(); + List waterToLight = rxWaterToLight.Matches(input).Select(x => new Map(ulong.Parse(x.Groups["destinationRangeStart"].Value), ulong.Parse(x.Groups["sourceRangeStart"].Value), ulong.Parse(x.Groups["rangeLength"].Value))).ToList(); + List lightToTemperature = rxLightToTemperature.Matches(input).Select(x => new Map(ulong.Parse(x.Groups["destinationRangeStart"].Value), ulong.Parse(x.Groups["sourceRangeStart"].Value), ulong.Parse(x.Groups["rangeLength"].Value))).ToList(); + List temperatureToHumidity = rxTemperatureToHumidity.Matches(input).Select(x => new Map(ulong.Parse(x.Groups["destinationRangeStart"].Value), ulong.Parse(x.Groups["sourceRangeStart"].Value), ulong.Parse(x.Groups["rangeLength"].Value))).ToList(); + List humidityToLocation = rxHumidityToLocation.Matches(input).Select(x => new Map(ulong.Parse(x.Groups["destinationRangeStart"].Value), ulong.Parse(x.Groups["sourceRangeStart"].Value), ulong.Parse(x.Groups["rangeLength"].Value))).ToList(); + + Parallel.ForEach(seeds, seed => + { + var soilNumber = seedToSoilMaps.Find(y => y.IsInSourceRange(seed.x))?.Convert(seed.x) ?? seed.x; + var fertilizerNumber = soilToFertilizer.Find(y => y.IsInSourceRange(soilNumber))?.Convert(soilNumber) ?? soilNumber; + var waterNumber = fertilizerToWater.Find(y => y.IsInSourceRange(fertilizerNumber))?.Convert(fertilizerNumber) ?? fertilizerNumber; + var lightNumber = waterToLight.Find(y => y.IsInSourceRange(waterNumber))?.Convert(waterNumber) ?? waterNumber; + var temperatureNumber = lightToTemperature.Find(y => y.IsInSourceRange(lightNumber))?.Convert(lightNumber) ?? lightNumber; + var humidityNumber = temperatureToHumidity.Find(y => y.IsInSourceRange(temperatureNumber))?.Convert(temperatureNumber) ?? temperatureNumber; + var locationNumber = humidityToLocation.Find(y => y.IsInSourceRange(humidityNumber))?.Convert(humidityNumber) ?? humidityNumber; + + lock(lowestLocationLock) + { + if (lowestLocation == 0 || locationNumber < lowestLocation) + { + lowestLocation = locationNumber; + } + } + }); + + return lowestLocation.ToString(); + } + + internal List GetMapsFromMap(IReadOnlyList maps, Map currentMap) + { + var currentMapSourceRange = currentMap.GetSourceRange(); + return GetAssociatedMaps(maps, currentMapSourceRange.rangeStart, currentMapSourceRange.rangeEnd).ToList(); + } + + internal IEnumerable GetAssociatedMaps(IReadOnlyList maps, ulong rangeStart, ulong rangeEnd) => maps.Where(x => (x.DestinationRangeStart <= rangeStart && x.DestinationRangeEnd >= rangeStart) || (x.DestinationRangeStart >= rangeStart && x.DestinationRangeStart <= rangeEnd)); + + public IEnumerable CreateRange(ulong start, ulong count) + { + var limit = start + count; + + while (start < limit) + { + yield return start; + start++; + } + } + } +} \ No newline at end of file diff --git a/AdventOfCode2023/Inputs/Day5.txt b/AdventOfCode2023/Inputs/Day5.txt new file mode 100644 index 0000000..97e1649 --- /dev/null +++ b/AdventOfCode2023/Inputs/Day5.txt @@ -0,0 +1,258 @@ +seeds: 1347397244 12212989 2916488878 1034516675 2821376423 8776260 2240804122 368941186 824872000 124877531 1597965637 36057332 4091290431 159289722 1875817275 106230212 998513229 159131132 2671581775 4213184 + +seed-to-soil map: +2988689842 4194451945 100515351 +2936009234 3353543976 52680608 +588295233 2638661119 66434163 +3932833115 2936009234 88315480 +3525561241 3331695912 21848064 +1622262003 1969921080 210668061 +2160566101 909457337 162053391 +1832930064 1887384181 82536899 +3625461917 3024324714 307371198 +3547409305 3680043285 78052612 +1915466963 588295233 240773057 +3089205193 3758095897 436356048 +4021148595 3406224584 273818701 +2156240020 2705095282 4326081 +1164190025 2180589141 458071978 +2477360206 829068290 80389047 +2322619492 2709421363 154740714 +654729396 1377923552 509460629 +2557749253 1211672006 166251546 +2724000799 1071510728 140161278 + +soil-to-fertilizer map: +3961802244 3774724750 90737174 +3164426550 3931513861 70563571 +147221566 1279409424 704464 +1394834067 2074132435 40845148 +3795834030 2142537807 47621185 +4083197470 4095560143 199407153 +2722903919 2876212954 93296050 +3467494732 2775293966 100918988 +1809650294 1815421878 66426374 +505665614 275280169 12031240 +2142537807 4002077432 60985377 +1577608496 331482268 177958690 +2590855103 2196397738 132048816 +1942888942 1978207624 24340152 +756722275 120895382 4815243 +3435289775 3899308904 32204957 +1967229094 715059087 147748489 +3955563498 2190158992 6238746 +356096070 125710625 149569544 +2520387506 2704826369 70467597 +517696854 2041922514 32209921 +1755567186 0 54083108 +348569226 1280113888 7526844 +761537518 1597328127 34415327 +1114796271 1631743454 128592301 +0 1494456232 102871895 +1070625412 287311409 44170859 +549906775 1287640732 206815500 +102871895 710084154 4974933 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204336916 +3467934541 2792632785 71522179 +804558599 3373754022 385746866 +3539456720 1310323845 638053457 +2857802690 3759500888 535466408 +121228756 104171291 215677899 +1229787380 2876467686 69791865 +1474926843 990493599 9540129 +1845071813 1948377302 108742610 \ No newline at end of file diff --git a/AdventOfCode2023/Program.cs b/AdventOfCode2023/Program.cs index 845bd55..025e5ab 100644 --- a/AdventOfCode2023/Program.cs +++ b/AdventOfCode2023/Program.cs @@ -2,6 +2,7 @@ using AdventOfCode2023.Day2; using AdventOfCode2023.Day3; using AdventOfCode2023.Day4; +using AdventOfCode2023.Day5; namespace AdventOfCode2023 { @@ -16,6 +17,8 @@ namespace AdventOfCode2023 new Day3_2(), new Day4_1(), new Day4_2(), + new Day5_1(), + new Day5_2(), }; private static void ListDays() diff --git a/AdventOfCode2023Tests/UnitTests.cs b/AdventOfCode2023Tests/UnitTests.cs index e9c28ed..a4f5c1f 100644 --- a/AdventOfCode2023Tests/UnitTests.cs +++ b/AdventOfCode2023Tests/UnitTests.cs @@ -106,5 +106,23 @@ namespace AdventOfCode2023Tests } #endregion + + #region Day5 + + [Test] + public void Day5_1Test() + { + var day5_1 = new Day5_1("seeds: 79 14 55 13\r\n\r\nseed-to-soil map:\r\n50 98 2\r\n52 50 48\r\n\r\nsoil-to-fertilizer map:\r\n0 15 37\r\n37 52 2\r\n39 0 15\r\n\r\nfertilizer-to-water map:\r\n49 53 8\r\n0 11 42\r\n42 0 7\r\n57 7 4\r\n\r\nwater-to-light map:\r\n88 18 7\r\n18 25 70\r\n\r\nlight-to-temperature map:\r\n45 77 23\r\n81 45 19\r\n68 64 13\r\n\r\ntemperature-to-humidity map:\r\n0 69 1\r\n1 0 69\r\n\r\nhumidity-to-location map:\r\n60 56 37\r\n56 93 4"); + Assert.That(day5_1.Execute(), Is.EqualTo("35")); + } + + [Test] + public void Day5_2Test() + { + var day5_2 = new Day5_2("seeds: 79 14 55 13\r\n\r\nseed-to-soil map:\r\n50 98 2\r\n52 50 48\r\n\r\nsoil-to-fertilizer map:\r\n0 15 37\r\n37 52 2\r\n39 0 15\r\n\r\nfertilizer-to-water map:\r\n49 53 8\r\n0 11 42\r\n42 0 7\r\n57 7 4\r\n\r\nwater-to-light map:\r\n88 18 7\r\n18 25 70\r\n\r\nlight-to-temperature map:\r\n45 77 23\r\n81 45 19\r\n68 64 13\r\n\r\ntemperature-to-humidity map:\r\n0 69 1\r\n1 0 69\r\n\r\nhumidity-to-location map:\r\n60 56 37\r\n56 93 4"); + Assert.That(day5_2.Execute(), Is.EqualTo("46")); + } + + #endregion } } \ No newline at end of file diff --git a/AdventOfCode2023Tests/Usings.cs b/AdventOfCode2023Tests/Usings.cs index 6ecc2bf..9c238db 100644 --- a/AdventOfCode2023Tests/Usings.cs +++ b/AdventOfCode2023Tests/Usings.cs @@ -1,6 +1,6 @@ global using NUnit.Framework; -global using AdventOfCode2023; global using AdventOfCode2023.Day1; global using AdventOfCode2023.Day2; global using AdventOfCode2023.Day3; -global using AdventOfCode2023.Day4; \ No newline at end of file +global using AdventOfCode2023.Day4; +global using AdventOfCode2023.Day5; \ No newline at end of file