Day 6

AdventOfCode/AdventOfCode.csproj

@@ -50,6 +50,8 @@
 	<None Remove="problems\aoc2023\day4\sample.txt" />
 	<None Remove="problems\aoc2023\day5\input.txt" />
 	<None Remove="problems\aoc2023\day5\sample.txt" />
+	<None Remove="problems\aoc2023\day6\input.txt" />
+	<None Remove="problems\aoc2023\day6\sample.txt" />
   </ItemGroup>
 
 

AdventOfCode/Problems/AOC2023/Day6/WaitForIt.cs

@@ -0,0 +1,65 @@
+using AdventOfCode.Runner.Attributes;
+
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AdventOfCode.Problems.AOC2023.Day6;
+[ProblemInfo(2023, 6, "Wait For It")]
+internal class WaitForIt : Problem<int, long>
+{
+	private int[] _times = [];
+	private int[] _distances = [];
+	private int _realTime;
+	private long _realDistance;
+
+	public override void LoadInput()
+	{
+		var lines = ReadInputLines("input.txt");
+		_times = lines[0].Split(':')[1]
+			.Split(' ')
+			.Where(e => e.Length > 0)
+			.Select(int.Parse)
+			.ToArray();
+
+		_distances = lines[1].Split(':')[1]
+			.Split(' ')
+			.Where(e => e.Length > 0)
+			.Select(int.Parse)
+			.ToArray();
+
+		_realTime = int.Parse(lines[0].Split(":")[1].Replace(" ", ""));
+		_realDistance = long.Parse(lines[1].Split(":")[1].Replace(" ", ""));
+	}
+
+	public override void CalculatePart1()
+	{
+		var winList = new List<int>();
+		for (int i = 0; i < _times.Length; i++)
+		{
+			var time = _times[i];
+			var distance = _distances[i];
+			var minTime = (int)Math.Floor((float)distance / time);
+			var possibleHeldTimes = Enumerable.Range(minTime, time - minTime);
+			var races = possibleHeldTimes.Select(t => (time - t) * t);
+			winList.Add(races.Count(d => d > distance));
+		}
+		Part1 = winList.Aggregate((a, b) => a * b);
+	}
+
+	public override void CalculatePart2()
+	{
+		var minTime = (long)Math.Floor((float)_realDistance/ _realTime);
+		var maxTime = _realTime - minTime;
+		for (long i = minTime; i <= maxTime; i++)
+		{
+			var dist = (_realTime - i) * i;
+			if(dist > _realDistance)
+				Part2++;
+		}
+	}
+
+}

AdventOfCode/Problems/AOC2023/Day6/input.txt

@@ -0,0 +1,2 @@
+Time:        55     82     64     90
+Distance:   246   1441   1012   1111

AdventOfCode/Problems/AOC2023/Day6/sample.txt

@@ -0,0 +1,2 @@
+Time:      7  15   30
+Distance:  9  40  200