/// <inheritdoc/>
public IEnumerable <string> RunTask1(string input, bool shouldVisualise)
{
var title = " is the lowest positive integer that can be used to initialize register a";
if (!shouldVisualise)
{
yield return(this.FastLoop(input).ToString() + title);
yield break;
}
var found = false;
var value = 1;
var spinner = new Spinner();
while (!found)
{
var compRabbit = new PrototypeComputer.PrototypeComputer(input);
var compTurtle = new PrototypeComputer.PrototypeComputer(input);
compRabbit.SetRegister("a", value);
compTurtle.SetRegister("a", value);
while (compRabbit.State.CanRun && compTurtle.State.CanRun)
{
compRabbit.RunNext();
compRabbit.RunNext();
compTurtle.RunNext();
if (compRabbit.State.Equals(compTurtle.State))
{
// Infinite loop detected.
if (this.IsSignal(compRabbit.State.Out))
{
yield return("Calculating.. " + spinner.State + " " + value.ToString());
found = true;
}
break;
}
}
spinner.Turn();
++value;
}
yield return(value.ToString() + title);
}
private int FastLoop(string input)
{
var comp = new PrototypeComputer.PrototypeComputer(input);
var baseValue = int.Parse(comp.State.Instructions[1].Args[0]) * int.Parse(comp.State.Instructions[2].Args[0]);
var value = 0;
while (value < baseValue)
{
value <<= 1;
++value;
value <<= 1;
}
return(value - baseValue);
}
private IEnumerable <string> SimplifiedProgram(string program, int input)
{
var comp = new PrototypeComputer.PrototypeComputer(program);
if (!int.TryParse(comp.State.Instructions[19].Args[0], out var left) ||
!int.TryParse(comp.State.Instructions[20].Args[0], out var right))
{
yield return("Wrong input!.\nThis solution abuses fact that program should calculate factorial of 7 and add multiply arguments of instructions #19 and #20.");
yield break;
}
long value = left * right;
value += Utils.Factorial(input);
yield return(value.ToString() + " should be sent to the safe.");
}
