static void Main(string[] args)
{
Console.WriteLine("Day 10");
Console.WriteLine("Star 1");
Console.WriteLine();
//Each bot only proceeds when it has 2 microchips
// when it does, it gives each one to a different bot
// or puts it in the marked "output" bin
//Sometimes, bots take microchips from "input" bins
//Each Microchip contains a single number
//The bots decide what to do with each chip
//What is the number of the bot that is responsible for comparing
//value-61 chips with value-17 chips?
string[] lines = File.ReadAllLines(inputFile);
List <(int bot, int value)> injections = new List <(int, int)>();
foreach (string line in lines)
{
if (line.StartsWith("bot"))
{
string[] splitLine = line.Split(' ');
int id = int.Parse(splitLine[1]);
int lowId = int.Parse(splitLine[6]);
int highId = int.Parse(splitLine[11]);
Bot targetBot = GetBot(id);
ChipContainer lowReceiver;
ChipContainer highReceiver;
if (splitLine[5] == "bot")
{
lowReceiver = GetBot(lowId);
}
else
{
lowReceiver = GetOutput(lowId);
}
if (splitLine[10] == "bot")
{
highReceiver = GetBot(highId);
}
else
{
highReceiver = GetOutput(highId);
}
targetBot.SetReceivers(highReceiver, lowReceiver);
}
else if (line.StartsWith("value"))
{
string[] splitLine = line.Split(' ');
injections.Add((int.Parse(splitLine[5]), int.Parse(splitLine[1])));
}
else
{
throw new Exception($"Unexpected Line: {line}");
}
}
foreach ((int bot, int value) in injections)
{
GetBot(bot).ReceiveChip(value);
}
if (q1target == null)
{
throw new Exception($"Target comparison never occurred");
}
Console.WriteLine($"Bot {q1target.id} compares values 61 and 17");
Console.WriteLine();
Console.WriteLine("Star 2");
Console.WriteLine();
//Multiply together outputs in 0, 1, and 2
//I expected the second part to involve a lot more simulation -
// obviously now I see I should have just built a tree.
int product = 1;
for (int i = 0; i < 3; i++)
{
OutputContainer container = GetOutput(i);
if (container.output.Count != 1)
{
throw new Exception($"Container {container.id} has {container.output.Count} outputs");
}
product *= container.output[0];
}
Console.WriteLine($"Product of containers 0, 1, and 2 is: {product}");
Console.WriteLine();
Console.ReadKey();
}
