2023年12月8日
G. Lights
摘要： G. Lights In the end of the day, Anna needs to turn off the lights in the office. There are $n$ lights and $n$ light switches, but their operation sch 阅读全文
posted @ 2023-12-08 15:37 onlyblues 阅读(95) 评论(0) 推荐(1)
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