Adv2016/D10.2/Program.cs

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using D10._1;
using static D10._1.Program;

namespace D10._2
{
    class Program
    {
        static void Main(string[] args)
        {
            if (args.Length < 1) throw new ArgumentException();
            if (File.Exists(args[0]) == false) throw new FileNotFoundException();

            var bots = new Dictionary<int, Bot>();
            var instructions = new Dictionary<Bot, ((int, Bot low), (int, Bot high))>();
            var outputs = new int[3];

            ParseFile(args, bots, instructions);

            while (true)
            {
                var bot = bots.FirstOrDefault(b => b.Value.IsFull()).Value;
                if (bot == null) break;

                var lowest = bot.GiveLowest();
                var highest = bot.GiveHighest();

                var ((lid, low), (hid, high)) = instructions[bot];

                if (low != null) low.Take(lowest);
                else if (lid < outputs.Length) outputs[lid] = lowest;

                if (high != null) high.Take(highest);
                else if (hid < outputs.Length) outputs[hid] = highest;
            }

            Console.WriteLine($"The answer is : { outputs[0] * outputs[1] * outputs[2] }");
        }
    }
}