irris @ 2024-11-01 17:23:49
大家好，我是出题人，欢迎大家参赛，感谢洛谷和赞助商支持。
请不要作弊，不要交流解法，不要闲聊，认真阅读比赛界面，提出问题可以 at 我，完毕。
其他事想不起来，到时候有重要的事情写在 这里。
by glass_goldfish @ 2024-11-01 19:55:01
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