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摘要: 好题 题面: 给你 $n$ 种颜色的球,每种颜色的球有 $k$ 个,把这 $n*k$ 个球排成一排,把每一种颜色的最左边出现的球涂成白色(初始球不包含白色),求有多少种不同的颜色序列 $n,k<=2000$ 肯定要想有 $n*k$ 个格子放数 本来想一种颜色一种颜色放 发现这是 $O(n)$ 的 ~ 阅读全文
posted @ 2022-11-16 21:45 hzoi_Sakura 阅读(48) 评论(5) 推荐(2) 编辑
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posted @ 2022-11-16 20:03 hzoi_Sakura 阅读(19) 评论(6) 推荐(3) 编辑
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posted @ 2022-11-15 21:26 hzoi_Sakura 阅读(20) 评论(10) 推荐(1) 编辑
摘要: 他就是JJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJ 阅读全文
posted @ 2022-11-14 11:37 hzoi_Sakura 阅读(85) 评论(6) 推荐(4) 编辑
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posted @ 2022-11-13 19:48 hzoi_Sakura 阅读(19) 评论(9) 推荐(2) 编辑
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posted @ 2022-11-11 21:02 hzoi_Sakura 阅读(16) 评论(6) 推荐(1) 编辑
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posted @ 2022-11-11 16:43 hzoi_Sakura 阅读(8) 评论(0) 推荐(1) 编辑
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posted @ 2022-11-10 21:44 hzoi_Sakura 阅读(16) 评论(2) 推荐(2) 编辑
摘要: 一堆J 阅读全文
posted @ 2022-11-10 19:28 hzoi_Sakura 阅读(90) 评论(23) 推荐(0) 编辑
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posted @ 2022-11-09 08:27 hzoi_Sakura 阅读(25) 评论(8) 推荐(1) 编辑