AdventOfCode23/Day5/Program.cs

using Day5;

using Range = Day5.Range;

if (args.Length < 1)
{
    Console.WriteLine("Requires 1 args: inputFileName");
    return -1;
}

var inputFile = args[0];
var parser = new MapParser();
var almanac = parser.Parse(inputFile);
var mapped = almanac.Map(almanac.Seeds, "seed", "location");

Console.WriteLine($"Locations: {string.Join(", ", mapped)}");
Console.WriteLine($"Min: {mapped.Min()}");

var ranges = almanac.Seeds
    .Where((_, index) => index % 2 == 0)
    .Select((start, index) => new Range(start, almanac.Seeds[2 * index + 1]))
    .ToList();

var locationRanges = almanac.Map(ranges, "seed", "location");

Console.WriteLine();
Console.WriteLine($"Min: {locationRanges.Min(x => x.Start)}");

return 0;