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Early-stage fundraising looks glamorous on LinkedIn, but here’s what you don’t see: investors price your uncertainty, not your potential. The less you’ve proven, the more equity, leverage and autonomy you give away.，推荐阅读旺商聊官方下载获取更多信息
，详情可参考51吃瓜
需要索引（如算距离、下标）：栈存索引，用 nums[stack.at(-1)] 取值比较。
cursor.execute(。服务器推荐是该领域的重要参考