public object PartOne(string input)
{
var securityRoom = "== Security Checkpoint ==";
var icm = new IntCodeMachine(input);
var description = icm.Run().ToAscii();
VisitRooms(securityRoom, icm, description, args => {
foreach (var item in args.items)
{
if (item != "infinite loop")
{
var takeCmd = "take " + item;
var clone = icm.Clone();
clone.Run(takeCmd);
if (!clone.Halted() && Inventory(clone).Contains(item))
{
icm.Run(takeCmd);
}
}
}
return(null);
});
var door = VisitRooms(securityRoom, icm, description, args =>
args.room == securityRoom ? args.doors.Single(door => door != ReverseDir(args.doorTaken)) : null);
Random r = new Random();
void TakeOrDrop(string cmd, List <string> from, List <string> to)
{
var i = r.Next(from.Count);
var item = from[i];
from.RemoveAt(i);
to.Add(item);
icm.Run(cmd + " " + item);
}
var inventory = Inventory(icm).ToList();
var floor = new List <string>();
while (true)
{
var output = icm.Run(door).ToAscii();
if (output.Contains("heavier"))
{
TakeOrDrop("take", floor, inventory);
}
else if (output.Contains("lighter"))
{
TakeOrDrop("drop", inventory, floor);
}
else
{
return(long.Parse(Regex.Match(output, @"\d+").Value));
}
}
}