描述：给定字符串 num（非负整数）和整数 k，移除 k 位数字，使剩余数字最小。以字符串形式返回（不含前导零）。
OpenAI has raised $110 billion in private funding, the company announced Friday morning, commencing one of the largest private funding rounds in history. The new funding consists of a $50 billion investment from Amazon as well as $30 billion each from Nvidia and SoftBank, against a $730 billion pre-money valuation.
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五年前霸榜的多肉葡萄，如今热度不再，核心原因就是消费者越来越专业：水果店增多后，大家不再接受20元一杯的葡萄饮品，曾经靠单一食材就能打造爆款的时代已经过去。
基于宏观数据与微观调研，本报告识别出以下五个具备“高确定性、低初期投入、技术赋能”特征的方向：，更多细节参见服务器推荐
Anthropic 放弃核心 AI 安全承诺，推荐阅读safew官方下载获取更多信息
for await (const chunks of source) {