2019年8月1日

摘要: P2870 [USACO07DEC]最佳牛线,黄金Best Cow Line, Goldpoj 3617 http://poj.org/problem?id=3617 题目描述FJ is about to take his N (1 ≤ N ≤ 500,000) cows to the annual 阅读全文
posted @ 2019-08-01 22:39 itdef 阅读(188) 评论(0) 推荐(0)

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