2023年8月16日
D. Trees and Segments
摘要： D. Trees and Segments The teachers of the Summer Informatics School decided to plant $n$ trees in a row, and it was decided to plant only oaks and fir 阅读全文
posted @ 2023-08-16 20:51 onlyblues 阅读(48) 评论(0) 推荐(0) 编辑
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