https://blog.youkuaiyun.com/2301_80311539zh-cnhttps://blog.youkuaiyun.com/https://blog.youkuaiyun.com/2301_80311539/article/details/150006387https://blog.youkuaiyun.com/2301_80311539/article/details/1500063872301_80311539Thu, 07 Aug 2025 21:17:46 +0800https://blog.youkuaiyun.com/2301_80311539/article/details/149960118https://blog.youkuaiyun.com/2301_80311539/article/details/1499601182301_80311539Wed, 06 Aug 2025 19:42:09 +0800 2^1 + 2^2 + 2^4 - 3。因为这个题给的简单版本-我反正觉得是这样，那么我们就能很快的分析出来合法的序列一定要以1开头以3结尾，并且中间的数值只能全为2，然后每一对13能贡献的的个数就为 2^n-1 n为13中间2的个数。但是问题是我们的1 3如果暴力遍历的话，时间复杂度就去到了n^2，这样是不行的，那么就需要优化中间的过程。增加了一个数位dp的记忆化搜索的学习。]]>https://blog.youkuaiyun.com/2301_80311539/article/details/149930180https://blog.youkuaiyun.com/2301_80311539/article/details/1499301802301_80311539Tue, 05 Aug 2025 20:46:30 +0800 查询(x, y)对应的值：因为我们有了这个横纵坐标，那么我们就能直接判断这个坐标在整个大矩形里的哪一个矩形中，如果在左上，那么就要加上左上的偏移量LU, 右下就要加上右下的偏移量RD以此类推。]]>https://blog.youkuaiyun.com/2301_80311539/article/details/149908630https://blog.youkuaiyun.com/2301_80311539/article/details/1499086302301_80311539Tue, 05 Aug 2025 08:49:39 +0800https://blog.youkuaiyun.com/2301_80311539/article/details/149604682https://blog.youkuaiyun.com/2301_80311539/article/details/1496046822301_80311539Fri, 25 Jul 2025 17:05:37 +0800https://blog.youkuaiyun.com/2301_80311539/article/details/149566649https://blog.youkuaiyun.com/2301_80311539/article/details/1495666492301_80311539Wed, 23 Jul 2025 20:50:20 +0800https://blog.youkuaiyun.com/2301_80311539/article/details/149546253https://blog.youkuaiyun.com/2301_80311539/article/details/1495462532301_80311539Wed, 23 Jul 2025 10:02:06 +0800https://blog.youkuaiyun.com/2301_80311539/article/details/149501884https://blog.youkuaiyun.com/2301_80311539/article/details/1495018842301_80311539Mon, 21 Jul 2025 23:57:19 +0800https://blog.youkuaiyun.com/2301_80311539/article/details/149479393https://blog.youkuaiyun.com/2301_80311539/article/details/1494793932301_80311539Sun, 20 Jul 2025 23:46:35 +0800https://blog.youkuaiyun.com/2301_80311539/article/details/149460277https://blog.youkuaiyun.com/2301_80311539/article/details/1494602772301_80311539Sun, 20 Jul 2025 00:33:30 +0800https://blog.youkuaiyun.com/2301_80311539/article/details/149439446https://blog.youkuaiyun.com/2301_80311539/article/details/1494394462301_80311539Sat, 19 Jul 2025 07:28:36 +0800https://blog.youkuaiyun.com/2301_80311539/article/details/149416893https://blog.youkuaiyun.com/2301_80311539/article/details/1494168932301_80311539Fri, 18 Jul 2025 00:47:43 +0800https://blog.youkuaiyun.com/2301_80311539/article/details/149391488https://blog.youkuaiyun.com/2301_80311539/article/details/1493914882301_80311539Thu, 17 Jul 2025 10:44:09 +0800https://blog.youkuaiyun.com/2301_80311539/article/details/149350452https://blog.youkuaiyun.com/2301_80311539/article/details/1493504522301_80311539Tue, 15 Jul 2025 23:04:46 +0800https://blog.youkuaiyun.com/2301_80311539/article/details/149328266https://blog.youkuaiyun.com/2301_80311539/article/details/1493282662301_80311539Mon, 14 Jul 2025 21:54:24 +0800https://blog.youkuaiyun.com/2301_80311539/article/details/149315409https://blog.youkuaiyun.com/2301_80311539/article/details/1493154092301_80311539Mon, 14 Jul 2025 00:02:25 +0800https://blog.youkuaiyun.com/2301_80311539/article/details/148311399https://blog.youkuaiyun.com/2301_80311539/article/details/1483113992301_80311539Fri, 30 May 2025 21:14:19 +0800https://blog.youkuaiyun.com/2301_80311539/article/details/148278397https://blog.youkuaiyun.com/2301_80311539/article/details/1482783972301_80311539Thu, 29 May 2025 15:20:09 +0800]]>https://blog.youkuaiyun.com/2301_80311539/article/details/148238866https://blog.youkuaiyun.com/2301_80311539/article/details/1482388662301_80311539Tue, 27 May 2025 17:40:39 +0800https://blog.youkuaiyun.com/2301_80311539/article/details/144794377https://blog.youkuaiyun.com/2301_80311539/article/details/1447943772301_80311539Sat, 28 Dec 2024 20:11:04 +0800