"When I was 17, I was at a girl's school and I had a friend who was a singer, and she wanted someone to produce for her. And I was like, 'I'll do it'," she recalls.
优点：计算简单，导数恒为1（正区间），缓解梯度消失
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// console.log(canSeePersonsCount([10,6,8,5,11,9])); // 输出 [3,1,2,1,1,0]（正确）
Paul does not know where he and his family will go next, but believes the chances of being able to live in neighbouring homes is slim.