namespace _2024;

public class Day01 : ISolution {
    public void Run() {
        // Read all lines from the input file
        var lines = File.ReadAllLines("input/01");

        // Two lists to hold the first and second integers per line
        var left = new List<int>();
        var right = new List<int>();

        foreach (var line in lines) {
            if (string.IsNullOrWhiteSpace(line)) continue;

            var parts = line.Split(' ', StringSplitOptions.RemoveEmptyEntries);
            if (parts.Length < 2) {
                Console.WriteLine("Bad parse");
                return;
            }

            if (int.TryParse(parts[0], out var a) && int.TryParse(parts[1], out var b)) {
                left.Add(a);
                right.Add(b);
            }
        }
        
        var leftSorted = left.OrderBy(x => x).ToList();
        var rightSorted = right.OrderBy(x => x).ToList();
        Console.WriteLine(leftSorted.Select((t, i) => Math.Abs(t - rightSorted[i])).Sum());

        Console.WriteLine(left.Sum(i => right.Count(x => x == i) * i));
    }
}