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查询Tags标签: Segments,共有 23条记录-
题解 CF1684F Diverse Segments
vp 的时候写了一个比较愚蠢的做法过了。 首先选择一个区间修改等价于删掉这个区间。那么考虑它给定的 \(m\) 个区间会有什么影响。假设给定的某个区间是 \([l,r]\),那么假设颜色 \(col\) 在这个区间出现 \(k\) 次,下标是 \(c_1,c_2,...,c_k\)。那么:\(0\le k\le 1\):没…
2022/8/4 6:25:37 人评论 次浏览 -
贪心算法: 区间选点
c++ 区间选点 /*区间选点题目描述:题目搬运:给定 N 个闭区间 [ai, bi],请你在数轴上选择尽量少的点,使得每个区间内至少包含一个选出的点。输出选择的点的最小数量。位于区间端点上的点也算作区间内。输入格式:第一行包含整数 N,表示区间数。接下来 N 行,每行包含两个…
2022/7/13 14:21:40 人评论 次浏览 -
Number of Groups (区间重叠问题(时间线性)+贪心优化时间复杂度+优先队列(或者set))
大佬的题解:CodeCraft-22 and Codeforces Round #795 (Div. 2) A-E - 知乎 (zhihu.com)Number of Groups time limit per test2 seconds memory limit per test256 megabytes inputstandard input outputstandard output You are given n colored segments on the number…
2022/6/4 23:22:48 人评论 次浏览 -
Write down for Segments, Extents, and Blocks
Segments, Extents, and Blocks(段、区、块) • Segments exist in a tablespace. • Segments are collections of extents. • Extents are collections of data/undo blocks. 8k • Data/undo blocks are mapped to disk blocks.引用下官方的关系图
2022/5/3 6:14:21 人评论 次浏览 -
翻译练习 Day16
题目:Letter A | JXNUOJ 翻译: Letter A 1000ms 65536K 描述: Little Petya learns how to write. The teacher gave pupils the task to write the letter A on the sheet of paper. It is required to check whether Petya really had written the letter A. 小Petya…
2022/2/9 23:46:14 人评论 次浏览 -
ASP.NET 中文分词搜索
代码:string keyword =RemoveHTML(GetString("Keyword"));StringBuilder strWhere=new StringBuilder("isaudit=1 "+(typeId==0?"": "and TypeID=" + typeId));if (!string.IsNullOrWhiteSpace(keyword)){if (keyword.Length &…
2022/2/7 11:12:43 人评论 次浏览 -
翻译联系 Day13
题目:Segments | JXNUOJ 翻译: Segments 1000ms 262144K 描述: You are given n segments on the Ox-axis. You can drive a nail in any integer point on the Ox-axis line nail so, that all segments containing this point, are considered nailed down. If the n…
2022/1/29 23:36:54 人评论 次浏览 -
user_segments视图(查询表占用内存大小)
1、查看表结构DESC USER_SEGMENTS; //查看表结构SEGMENT_NAME //段名 SEGMENT_TYPE //段类型,如表、索引 TABLESPACE_NAME //包含该段的表空间 BYTES //该段的大小 2、查看表大小SELECT SEGMENT_NAME TABLENAME ,(BYTES/1024/1024) M…
2022/1/25 7:06:27 人评论 次浏览 -
Estimating the Round-Trip Time in TCP
https://networkengineering.stackexchange.com/questions/69562/estimating-the-round-trip-time-in-tcpI was reading a textbook which says:Let’s begin our study of TCP timer management by considering how TCP estimates the round-trip time between sender an…
2022/1/12 23:09:15 人评论 次浏览 -
Estimating the Round-Trip Time in TCP
https://networkengineering.stackexchange.com/questions/69562/estimating-the-round-trip-time-in-tcpI was reading a textbook which says:Let’s begin our study of TCP timer management by considering how TCP estimates the round-trip time between sender an…
2022/1/12 23:09:15 人评论 次浏览 -
Tokens on the Segments 题解(nlogn题解+贪心+优先队列)
题目链接 题目思路 网上我还没看到正解,感觉大家好像都是\(n^2logn\)甚至是更加高的复杂度,所以我决定水一篇题解 题意就是给你\(n\)条线段,要从每条线段选一个点放入一个集合中,求集合的最大\(size\) 我们设选点是从左往右 假设我们现在选的点\(pos\)为\(now\),那么…
2021/12/1 6:06:56 人评论 次浏览 -
Tokens on the Segments 题解(nlogn题解+贪心+优先队列)
题目链接 题目思路 网上我还没看到正解,感觉大家好像都是\(n^2logn\)甚至是更加高的复杂度,所以我决定水一篇题解 题意就是给你\(n\)条线段,要从每条线段选一个点放入一个集合中,求集合的最大\(size\) 我们设选点是从左往右 假设我们现在选的点\(pos\)为\(now\),那么…
2021/12/1 6:06:56 人评论 次浏览 -
2021-11-10 micropython 的 tm1638记录 附带DHT11读显实例
1. tm1638.py 这个是1638的驱动,放在同级目录下 # MicroPython TM1638 LED display driver for 8x 7-segment decimal LED modules with 8x individual LEDs and 8x switches # 8x push buttonsfrom micropython import const from machine import Pin from time import …
2021/11/10 11:09:59 人评论 次浏览 -
2021-11-10 micropython 的 tm1638记录 附带DHT11读显实例
1. tm1638.py 这个是1638的驱动,放在同级目录下 # MicroPython TM1638 LED display driver for 8x 7-segment decimal LED modules with 8x individual LEDs and 8x switches # 8x push buttonsfrom micropython import const from machine import Pin from time import …
2021/11/10 11:09:59 人评论 次浏览 -
Oracle 数据库表、表空间大小统计
1、查找特定表大小 select round(BYTES/1024/1024,2)||M from Dba_Segments where segment_name=upper(表名); 2、查找数据库中占用空间较大的对象 SELECT OWNER,SEGMENT_NAME,SUM(bytes/1024/1024/1024 ) sum from Dba_Segments group by owner,segment_name having sum…
2021/9/23 19:43:38 人评论 次浏览