// 易错点3：处理最终结果为空的场景（比如num="10"，k=2）
While she knows there is a difficult road ahead, she said she was determined to rebuild her life.
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Появились подробности о задержании основателя российского медиахолдингаСледователь МВД просит об аресте на 2 месяца основателя Readovka Костылева
Both are valid. Both are interesting.
On the third loop iteration, the backing store of size 2 is