private static async Task FollowPath(painter.SynchronousIntMachine intMachine, IEnumerable <string> path)
{
foreach (var direction in path)
{
_ = await RunMachineAsync(intMachine, direction);
}
}
public static async Task Run()
{
var inputs = await File.ReadAllTextAsync("inputs\\9.txt");
painter.SynchronousIntMachine vm = new painter.SynchronousIntMachine(inputs);
vm.InputQueue.Enqueue(1);
var c = 0;
while (vm.RunUntilBlockOrComplete() != painter.SynchronousIntMachine.ReturnCode.Completed)
{
c++;
}
Console.WriteLine("Part 1: " + vm.OutputQueue.Last());
vm = new painter.SynchronousIntMachine(inputs);
vm.InputQueue.Enqueue(2);
c = 0;
while (vm.RunUntilBlockOrComplete() != painter.SynchronousIntMachine.ReturnCode.Completed)
{
c++;
}
Console.WriteLine("Part 2: " + vm.OutputQueue.Last());
}
public static async Task <string> Part1Async(string input)
{
var intMachine = new painter.SynchronousIntMachine(input);
var(rooms, collectedItems) = await DiscoverRoomsAndGatherItemsAsync(intMachine);
var hullBreachRoom = rooms [HullBreach];
var securityCheckpointRoom = rooms [SecurityCheckpoint];
var pathToSecurityCheck = GetPath(rooms, hullBreachRoom, securityCheckpointRoom);
await FollowPath(intMachine, pathToSecurityCheck);
var nextDirection = securityCheckpointRoom.Doors.Keys.Single(d => d != InverseDirections [pathToSecurityCheck.Last()]);
var inventories = collectedItems
.Subsets()
.Select(x => x.OrderBy(y => y).ToList())
.Append(new List <string> ())
.OrderBy(x => Math.Abs(collectedItems.Count() / 2 - x.Count))
.ToList();
var currentInventory = inventories.First();
string password = null;
foreach (var inv in inventories)
{
if (!currentInventory.SequenceEqual(inv))
{
var stuffToDrop = currentInventory.Except(inv).ToList();
var stuffToTake = inv.Except(currentInventory).ToList();
foreach (var stuff in stuffToDrop)
{
_ = await RunMachineAsync(intMachine, string.Concat("drop ", stuff));
}
foreach (var stuff in stuffToTake)
{
_ = await RunMachineAsync(intMachine, string.Concat("take ", stuff));
}
}
currentInventory = inv;
var response = await RunMachineAsync(intMachine, nextDirection);
var roomNames = RoomNameRegex.Matches(response).OfType <Match> ().Select(x => x.Groups [1].Value).ToList();
if (roomNames.Count == 1)
{
password = PasswordRegex.Match(response).Value;
break;
}
}
return(password);
}
