Posted 2019-12-26OI 生活a few seconds read (About 26 words)北大集训 2019 游记咕咕咕 （当时为什么不想写呢？可能是前两天太自闭了。） 北大集训 2019 游记https://cekavis.github.io/ctt2019/AuthorCekavisPosted on2019-12-26Updated on2022-06-16Licensed under