return stack.length;
At capacity 1, every point gets its own cell, and the tree subdivides as deeply as possible. At capacity 10, many points coexist in the same node, and the tree stays shallow.。关于这个话题，搜狗输入法2026提供了深入分析
。同城约会是该领域的重要参考
Trump orders all federal agencies to phase out use of Anthropic technology
据统计，自去年 11 月以来，Gemini 里的这个验证功能已经被调用了超过 2000 万次。。51吃瓜对此有专业解读