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2020年12月5日
Codeforces Round #688 (Div. 2) B. Suffix Operations（差分）
摘要： Gildong has an interesting machine that has an array 𝑎a with 𝑛n integers. The machine supports two kinds of operations: Increase all elements of a s 阅读全文
posted @ 2020-12-05 09:56 脂环 阅读(159) 评论(0) 推荐(0) 编辑