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.
The 28-year-old previously said he created the event in response to the rising cost of festival and gig tickets.
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思路：链表转数组 + 单调栈（从后往前遍历）。与「下一个更大元素」模板一致，仅需将链表值先提取到数组。
Ранее стало известно о планах компании SpaceX присоединиться к запуску 120 спутников для Вооруженных сил Украины.