摘要: M - Sum of 2050 题目描述: A number is called 2050-number if it is 20502050, 2050020500, ..., (2050⋅10k2050⋅10k for integer k≥0k≥0). Given a number nn, you 阅读全文
posted @ 2021-05-03 09:57 扇与她尽失 阅读(98) 评论(0) 推荐(0) 编辑
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