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2021年8月16日
Codeforces Round #737 (Div. 2) D. Ezzat and Grid（线段树优化DP）
摘要： Moamen was drawing a grid of 𝑛n rows and 109109 columns containing only digits 00 and 11. Ezzat noticed what Moamen was drawing and became interested 阅读全文
posted @ 2021-08-16 11:46 脂环 阅读(108) 评论(0) 推荐(0)