private static string Solution2(string[] input, bool debug = false)
{
List <Instruction> instructions = ALU.Parse(input).ToList();
long modelNumber = 11111111111111;
ALU submarineAlu = new();
if (debug)
{
submarineAlu.Debug = debug;
Console.WriteLine();
Console.WriteLine($"{modelNumber}");
}
int[] digits = modelNumber.ToString().Select(d => int.Parse($"{d}")).ToArray();
submarineAlu.ExecuteInstructions(instructions, digits);
if (debug)
{
Console.WriteLine();
if (submarineAlu.HasException)
{
Console.WriteLine(submarineAlu.ExceptionMessage);
}
else
{
Console.WriteLine($"{modelNumber} w: {submarineAlu.W} x: {submarineAlu.X} y: {submarineAlu.Y} z: {submarineAlu.Z} ");
}
}
if (submarineAlu.Z == 0)
{
return(string.Join("", digits.Select(d => $"{d}")));
}
else
{
foreach ((int w1, int w2, int offset) in submarineAlu.Conditions)
{
if (offset >= 0)
{
digits[w1] = 1 + offset;
digits[w2] = 1;
}
else
{
digits[w2] = 1 - offset;
digits[w1] = 1;
}
}
return(string.Join("", digits.Select(d => $"{d}")));
}
}