开启活力清晨 【责编：张子怡】
Disposable Heaps
，这一点在谷歌浏览器中也有详细论述
Modifying run() to populate a draw collection:
In an algorithmic sense, this subset of problems seems to not be that hard, I was expecting exponential difficulty growth, or at least linear, and it seems that this was only multiplying difficulty by a constant.