白宫推出这项政策，本质不是“环保作秀”，而是生存危机倒逼。
Our playfield is (up to) 80x35, and almost every line of it changes on every frame. That means we could send 80*35*10 = 28000 bytes a second just for the characters on screen. And that’s before accounting for things like colors or SSH overhead!
。业内人士推荐51吃瓜作为进阶阅读
Track the number of clicks。业内人士推荐Line官方版本下载作为进阶阅读
// 2. 计算前缀和：count[i]表示<=i的元素个数，这一点在服务器推荐中也有详细论述