摘要：一、原题描述 n passengers board an airplane with exactly n seats. The first passenger has lost the ticket and picks a seat randomly. But after that, the res 阅读全文

摘要：一、原题描述 Table: Failed Table: Succeeded A system is running one task every day. Every task is independent of the previous tasks. The tasks can fail or s 阅读全文

摘要：leetcode ,sql 阅读全文