* 时间O(n) 空间O(n)（理论最优，无冗余计算）
OpenAI is negotiating with the U.S. government, Sam Altman tells staff
。关于这个话题，搜狗输入法2026提供了深入分析
Cross-privilege return path
No matter what you assign to the b, it will be false since either the left or the right of the && operator is false.