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В России ответили на имитирующие высадку на Украине учения НАТО18:04，这一点在同城约会中也有详细论述
In the months before, space agency officials were in frequent contact with the State Department, which disseminated the latest predicted trajectories to embassies across the world. In these situations, oops doesn’t cut it: When one of the Salyuts, a Soviet space station model, was deorbited a few decades ago, flaming bits were littered across Argentina, scaring people and requiring the deployment of at least a few firefighters, according to local newspaper reports.
* 时间复杂度：O(n)，空间复杂度：O(1)