public override string?CalculateSolution() { IDynamicIndexable2D <int> screen = new DynamicIndexable2D <int>(); using IEnumerator <long> e = new IntcodeComputer(_initialMemory).Execute().GetEnumerator(); while (e.MoveNext()) { int x = (int)e.Current; if (!e.MoveNext()) { break; } int y = (int)e.Current; if (!e.MoveNext()) { break; } int id = (int)e.Current; screen[x, y] = id; } return(Solution = screen.Count(t => t == ScreenObject.Block).ToString()); }