输入：head = [2,1,5]
We have no way to skip over points that are obviously too far away. What if we could organize the space itself so that when we search, we can immediately rule out entire regions?
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“我们将持续深化区域协同，充分发挥先行示范作用，推动京津冀协同发展不断取得新成效。”冯国祥说。，更多细节参见heLLoword翻译官方下载
Matthew and Nicola Smith knew his only hope was an organ transplant