Scientists have discovered that an annual event when Emperor penguins completely shed and regrow their feathers is putting the birds in peril as Antarctica is transformed by a warming world.
СюжетПовреждение нефтепровода «Дружба»
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#!/data/data/com.termux/files/usr/bin/sh
// 2. 排序：逐个将堆顶元素放到末尾