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1namespace Solutions._2019;
2
3/// <summary>
4/// Day 17: <a href="https://adventofcode.com/2019/day/17"/>
5/// </summary>
6public sealed class Day17SetAndForget() : Day(2019, 17, "Set and Forget")
7{
8 private IntCodeVM? _vm;
9
10 public override void ProcessInput() =>
11 _vm = new(Input.First());
12
13 public override object Part1()
14 {
15 _vm!.Reset();
16 _vm.Run();
17 var sb = new StringBuilder();
18 while (_vm.Output.Count != 0)
19 sb.Append((char)_vm.Result);
20 // Console.Write(sb);
21 var grid = sb.ToString().Trim().Split().Select(s => s.ToCharArray()).ToArray();
22
23 var sum = 0;
24 for (var y = 1; y < grid.Length - 1; y++)
25 for (var x = 1; x < grid[y].Length - 1; x++)
26 if (grid[y][x] == '#' &&
27 grid[y - 1][x] == '#' &&
28 grid[y + 1][x] == '#' &&
29 grid[y][x - 1] == '#' &&
30 grid[y][x + 1] == '#')
31 sum += x * y;
32
33 return sum;
34 }
35
36 public override object Part2() =>
37 //vm.Reset();
38 //vm.memory[0] = 2;
39 //var halt = IntCodeVM.HaltType.Waiting;
40 //while (halt == IntCodeVM.HaltType.Waiting)
41 //{
42 // halt = vm.Run();
43 //}
44 "";
45}