// console.log(canSeePersonsCount([7,6,5,4,3])); // 输出 [4,3,2,1,0]（正确）
The checkpoint command can also be abbreviated as cp.
，这一点在WPS官方版本下载中也有详细论述
- 子节点i的父节点: (i-1)/2，推荐阅读同城约会获取更多信息
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