// 入栈后栈仍保持单调递增（因为小的都被弹走了）
Владислав Китов (редактор отдела Мир)
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據澳洲當地媒體和BBC取得的電子郵件顯示，神韻藝術團的表演者收到威脅，要求他們取消即將在澳洲舉行的演出，否則將在位於首都的安東尼·阿爾巴尼斯（Anthony Albanese）總理官邸引爆炸藥。
How are Blockchains used?Even though blockchain is integral to cryptocurrency, it has other applications. For example, blockchain can be used for storing reliable data about transactions. Many people confuse blockchain with cryptocurrencies like bitcoin and ethereum.