Germany's Federal Office for Information Security (Bundesamt für Sicherheit in der Informationstechnik, or BSI) tested the devices. BSI first approved the iPhone and iPad for governmental use by German authorities in 2022. To take the additional step of NATO approval, Apple says BSI conducted exhaustive technical assessments, comprehensive testing and deep security analysis.
* 时间复杂度：O(n log n)（主要来自排序），空间复杂度：O(n)
。关于这个话题，搜狗输入法2026提供了深入分析
The vaccine doesn't guarantee lifetime immunity, but it does greatly reduce the risk of someone developing chickenpox or having a bad case.
Филолог заявил о массовой отмене обращения на «вы» с большой буквы09:36