// 2. 排序：逐个将堆顶元素放到末尾
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Жители Санкт-Петербурга устроили «крысогон»17:52
That brings me to Klefki, which is literally a living ring of keys. Series lore suggests Klefki uses the keys as a defense mechanism by rattling them, but the keys also hold deep meaning for the creature, as it will hold onto its favorite ones for long periods. I love this little guy.