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摘要: 比赛链接:Here AB水题, C - Sum of gcd of Tuples (Easy) 题意:\(\sum_{a=1}^{K} \sum_{b=1}^{K} \sum_{c=1}^{K} g c d(a, b, c)\) 数据范围:\(1\le K\le 200\) 思路:因为 \(k\) 阅读全文
posted @ 2021-09-09 15:51 RioTian 阅读(103) 评论(0) 推荐(0)