public void TestNavigateFromFile()
{
Ferry ferry = new Ferry();
ferry.NavigateFromFile("input/day12.txt");
Assert.Equal(25, ferry.DistanceFromStart());
}
public override Day Run()
{
dayOfMonth = 12;
stopwatch.Start();
Ferry ferry = new Ferry();
ferry.NavigateFromFile("input/day12.txt");
answer_part1 = ferry.DistanceFromStart().ToString();
ferry = new Ferry();
ferry.NavigateByWaypointFromFile("input/day12.txt");
answer_part2 = ferry.DistanceFromStart().ToString();
return(this);
}