They warn that as SpaceX chief Elon Musk pledges to launch one million satellites in the coming years, this contamination could be the tip of the iceberg.
思路：找「右侧第一个 ≤ cur」的元素 → 弹出所有 cur 的元素，栈顶即为折扣。最终价格 = cur - 折扣（有则）或 cur（无则）。
。WPS官方版本下载是该领域的重要参考
"Reddit's anonymity and community norms make answers feel more candid and less polished than influencer-style content."
陆逸轩：录多次之后再进行编辑。
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