AdventOfCodeDay14.cs

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;

namespace AdventOfCodeDay14
{
	class Program
	{
		static void Main(string[] args)
		{
			StreamReader ss = new StreamReader("../../input1.txt");

			string line;
			var input = new List<string>();
			while ((line = ss.ReadLine()) != null)
			{
				input.Add(line);
			}
			
			var regex = new Regex("^(?<Name>.*) can fly (?<Speed>.*) km/s for (?<D1>.*) seconds, but then must rest for (?<D2>.*) seconds.$");

			var reindeer = new List<Reindeer>();

			foreach (var c in input)
			{
				var m = regex.Matches(c)[0];
				var name = m.Groups["Name"].Value;
				var speed = int.Parse(m.Groups["Speed"].Value);
				var d1 = int.Parse(m.Groups["D1"].Value);
				var d2 = int.Parse(m.Groups["D2"].Value);

				reindeer.Add(new Reindeer
				{
					Name = name,
					Speed = speed,
					MovingDuration = d1,
					RestingDuration = d2,
					IsFlying = false,
					NextStatusChange = 0,
					Points = 0
				});
			}

			const int raceLength = 2503;
			for (var i = 0; i < raceLength; i++)
			{
				foreach (var r in reindeer)
				{

					if (r.NextStatusChange == 0)
					{
						if (r.IsFlying)
						{
							r.NextStatusChange = r.RestingDuration;
							r.IsFlying = false;
						}
						else
						{
							r.NextStatusChange = r.MovingDuration;
							r.IsFlying = true;
						}
					}

					if (r.IsFlying)
					{
						r.TotalDistanceTraveled += r.Speed;
					}

					r.NextStatusChange--;
				}

				var leadDistance = reindeer.Max(a => a.TotalDistanceTraveled);
				foreach (var leaders in reindeer.Where(a => a.TotalDistanceTraveled == leadDistance))
				{
					leaders.Points++;
				}
			}
			reindeer = reindeer.OrderByDescending(a => a.Points).ToList();
			reindeer.ForEach(a => Console.WriteLine($"{a.Name} : {a.TotalDistanceTraveled} : {a.Points}"));
			Console.ReadLine();
		}


		public class Reindeer
		{
			public string Name { get; set; }
			public int Speed { get; set; }
			public int MovingDuration { get; set; }
			public int RestingDuration { get; set; }
			public bool IsFlying { get; set; }
			public int NextStatusChange { get; set; }
			public int TotalDistanceTraveled { get; set; }
			public int Points { get; set; }
		}
	}
}