internal override string SolvePart1()
{
ElfCPU cpu = new ElfCPU(InputLines);
cpu.Registers[0] = 10332277;
cpu.RunToIP(28);
cpu.Step();
var answer = cpu.Registers[1];
return(answer.ToString());
}
internal override string SolvePart2()
{
ElfCPU cpu = new ElfCPU(InputLines);
cpu.Registers[0] = 0;
List <int> haltValues = new List <int>();
int haltValue;
while (true)
{
cpu.RunToIP(29);
haltValue = cpu.Registers[1];
if (haltValues.Contains(haltValue))
{
/* we've looped! */
break;
}
else
{
haltValues.Add(haltValue);
}
}
return(haltValues.Last().ToString());
}