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OpenCV--图像金字塔
图像金字塔 高斯金字塔 高斯金字塔:向下采样方法(缩小) 高斯金字塔:向上采样方法(放大) img=cv2.imread("AM.png") cv_show(img,'img') print (img.shape) 效果: up=cv2.pyrUp(img) cv_show(up,'up') pri ...
分类:其他好文   时间:2020-02-10 18:14:56    阅读次数:69
CF1096E The Top Scorer 组合数 容斥
枚举小明得到得分数为x,枚举得分为x得有i人 主要问题是求出g(s,n,up) 有多少种方案满足: s个求,n个箱子,每个箱子容量为up #include<bits/stdc++.h> using namespace std; typedef long long ll; const int N=1e ...
分类:其他好文   时间:2020-02-10 13:39:03    阅读次数:43
EMERGENCY! EUREKA MAY BE INCORRECTLY CLAIMING INSTANCES ARE UP WHEN THEY'RE NOT.
警告内容: EMERGENCY! EUREKA MAY BE INCORRECTLY CLAIMING INSTANCES ARE UP WHEN THEY'RE NOT. RENEWALS ARE LESSER THAN THRESHOLD AND HENCE THE INSTANCES ARE ...
分类:其他好文   时间:2020-02-09 22:19:21    阅读次数:85
经济学十大原理
经济学十大原理1. 人们面临权衡取舍(People face trade-offs)2. 某种东西的成本是为了得到它而放弃的东西( The cost of something is what you give up to get it)3. 理性人考虑边际量(Rational people thin... ...
分类:其他好文   时间:2020-02-08 11:47:28    阅读次数:72
实战-Cassandra之压测
执行前 [root@node1 bin]# /data/cass/bin/nodetool status Datacenter: datacenter1 Status=Up/Down |/ State=Normal/Leaving/Joining/Moving -- Address Load Tok ...
分类:其他好文   时间:2020-02-07 14:38:48    阅读次数:93
LeetCode-1. Two Sum
Given an array of integers, return indices of the two numbers such that they add up to a specific target. You may assume that each input would have ex ...
分类:其他好文   时间:2020-02-05 13:35:52    阅读次数:62
java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up.
java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.j ...
分类:数据库   时间:2020-02-05 12:01:05    阅读次数:70
synchronized浅析
基于jdk-13.0.2 Java对象头中的markWord布局可参考markOop.hpp,(大端格式)归纳为: 其中前3含义: JDK10及之后版本默认启动即开启偏向锁 JDK-8181778 参考: jdk13源码 https://hg.openjdk.java.net/jdk/jdk13 j ...
分类:其他好文   时间:2020-02-04 23:52:42    阅读次数:79
线段树(区间加区间统计)
```#include #define ll long longusing namespace std;const ll maxn=2e5*5+10;struct re{ ll x,y,w,z;};re a[maxn];ll b[maxn];void up(ll k){ a[k].z=a[k*2].... ...
分类:其他好文   时间:2020-02-03 13:37:33    阅读次数:84
1. Two Sum
Given an array of integers, return indices of the two numbers such that they add up to a specific target. You may assume that each input would have ex ...
分类:其他好文   时间:2020-02-03 12:04:03    阅读次数:69
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