public static string secondPuzzle(string location)
{
string[] lines = File.ReadAllLines(@location, Encoding.UTF8);
Refinery refinery = new Refinery(lines);
long maxFuel = 0;
int factor = 10000;
Dictionary <string, long> oldExtra = null;
long oldNeededOre = 0;
while (factor >= 1)
{
while (refinery.NeededOre < 1000000000000)
{
oldExtra = new Dictionary <string, long>(refinery.Extra);
oldNeededOre = refinery.NeededOre;
refinery.ProduceMolecule(new Molecule()
{
Name = "FUEL", Amount = factor
});
maxFuel += factor;
}
//produced too much, reset old state and donwgrade factor / 10
if (factor >= 1)
{
refinery.Extra = new Dictionary <string, long>(oldExtra);
refinery.NeededOre = oldNeededOre;
maxFuel -= factor;
factor /= 10;
}
}
return(maxFuel.ToString());
}
public static string firstPuzzle(string location)
{
string[] lines = File.ReadAllLines(@location, Encoding.UTF8);
Refinery refinery = new Refinery(lines);
refinery.ProduceMolecule(new Molecule()
{
Name = "FUEL", Amount = 1
});
return(refinery.NeededOre.ToString());
}