inversions another problem yet

C - Cards Query Problem

C - Cards Query Problem https://atcoder.jp/contests/abc298/tasks/abc298_c 思路 在card入box的过程中, 需要两重统计: 记录box接纳card, 记录此card被box接纳。 Code https://atcoder.j ......
Problem Cards Query

Another Crisis UVA - 12186

#include <iostream> #include <cstring> #include <vector> #include <algorithm> using namespace std; const int N=1e5+3; int f[N],n,K; vector<int> g[N]; ......
Another Crisis 12186 UVA

一个研究课题 A Research Problem UVA10837

输入正整数m(m≤1e8),求最小的正整数n,使得φ(n)=m。n<=2e8。 #include<cstring> #include<algorithm> #include<iostream> #include <map> using namespace std; const int M=1e5+5 ......
研究课题 课题 Research Problem 10837

Can not construct instance of com.hm.drgs.platform.common.dto.data.group.DrgsRecordGroupResultDto, problem: Should never call 'set' on setterless property

报错全部信息: JSON parse error: Can not construct instance of com.hm.drgs.platform.common.dto.data.group.DrgsRecordGroupResultDto, problem: Should never cal ......

解决前端启动报错:This is probably not a problem with npm. There is likely additional logging output above.

在执行 npm run dev 运行项目的时候报错: {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"}) npm ERR! code ELIFECYCLE npm ERR! errno 1 npm ERR! phan ......
前端 additional probably logging problem

COMP20007 Task 2: C Problem

Task 2: C ProblemAssignment 1GeneralTask 1: AlgorithmicDesignTask 2: C ProblemAssignment SubmissionAcademic HonestyLate PolicyRequirements: CProgrammi ......
Problem 20007 COMP Task

angular项目启动报Another process, with id 24289, is currently running ngcc.

在npm build时突然停下来,再启动就启不起来了。 看报错信息是端口被占用,在任务管理器中也找不到这个端口 重启vscode、重启电脑都不好使。。 可以通过删除node_modules再重新npm install解决! ......
currently angular Another process running

UCUP-ZJ M. Minimum Element Problem

题意 给定一个位置x,求在$p_x$分别取1-n的所有情况下,对应笛卡尔树不同的排列个数。 题解 先不考虑$p_x$,列出转移式,发现是卡特兰数。 进一步地,可以把排列对应笛卡尔树意义下的不同构数,和二叉树不同构数等价联系起来:因为对于任何一个二叉树,按照中序遍历在上面填1-n,就可以唯一确定一个排 ......
UCUP-ZJ Minimum Element Problem UCUP

What is X/Y problem?

X/Y problem means you have a problem X, you think you should solve another problem Y to solve the original problem X, you ask people for help you solv ......
problem What is

Perceptron, Support Vector Machine and Dual Optimization Problem (3)

Support Vector Machines Perceptron and Linear Separability 假设存在一个 linear decision boundary,它可以完美地对 training dataset 进行分割。 那么,经由上述 Perceptron Algorithm ......

P1865 A % B Problem

P1865 A % B Problem 题目链接 题意简述 求区间 $[l,r]$ 内质数的个数 解析 前置知识: 素数判断 / 素数筛法 前缀和 质数是指在大于 $1$ 的自然数中,除了 $1$ 和它本身以外不再有其他因子的自然数。 一层循环判断 $2\sim n-1$ 的每一个数是否是它的因子 ......
Problem P1865 1865

题解 CF1787F【Inverse Transformation】

理解很困难,但是代码真的很简单。祝贺我过了我做的第一个有关置换的题目。 problem ~~已经不是能简化的东西了~~ 一位科学家正在研究一个自我生长的长度为 $n$ 的排列 $a_1,a_2,\ldots,a_n$。 排列每天都会变化,每一天,元素 $x$ 都会变成 $a_x$,即 $a_x$ 会 ......
题解 Transformation Inverse 1787F 1787

Problem Y: Understanding Used Sailboat Prices

Like many luxury goods, sailboats vary in value as they age and as market conditions change. The attached “2023_MCM_Problem_Y_Boats.xlsx” file include ......
Understanding Sailboat Problem Prices Used

Problem Z: The Future of the Olympics

Background The International Olympic Committee (IOC) is facing a decreasing number of bids to host the Olympics – both Summer and Winter Games[1]. In ......
Olympics Problem Future The the

Perceptron, Support Vector Machine and Dual Optimization Problem (1)

Linear Decision Boundary(线性决策边界) Example. (classification problem) 给定一个二元的特征空间 $\mathcal{X} = \left{ \text{weight} \times \text{height} \right}$,对标签 $ ......

Unable to start the daemon process . This problem might be caused by incorrect configuration of the daemon. For example, an unrecognized jvm option is used.

创建springboot项目的时候报这个错 是因为你选择了Gradle环境 但是你本地没有这个Gradle环境 选择maven环境就可以了 ......

转)关于逆问题(inverse problem)的阅读名单

【注1】虽然咱不看这方面的内容,但是既然莫名其妙地下了这么个东西,就想着不能扔了,至少留一份于***当中。 【注2】简单排版,但并未校正,无法保证质量。 【注3】与原文不同,这里按照Mx做了重排,排法类似于大名鼎鼎的冒泡排序,故而more不保证质量。 A Reading List in Invers ......
名单 inverse problem 问题

assembly of tiny problems I come across when using Ubuntu

1. flameshot couldn't work properly. after running, it doesn't act to enable selecting area as expected, but pop out a frame and I need to click 'shar ......
assembly problems across Ubuntu using

Activity推送活动的时候引发的并发异常org.activiti.engine.ActivitiOptimisticLockingException: ProcessInstance[d38c3a8f-b0c2-11ed-b989-525400a941cf] was updated by another transaction concurrently

这是在推送任务的时候工作流并没有修改成功数据库内容所以抛出的异常,异常原因是是因为工作流事件中有修改工作流表数据的操作,然后推送任务的时候也有修改工作流表数据的操作,所以引发了并发冲突,在工作流监听事件的实现类中不可以调用工作流相关变更数据的操作 把事件中的这些操作去除掉就好了 ......

Paper Reading: XRRF — An eXplainable Reasonably Randomised Forest algorithm for classification and regression problems

本文提出了一种 XRRF 算法,它通过执行本文提出的 SGFL 和 RRF 算法来得到可解释性、准确性和可解释性之间的权衡。随后引入了基于决策路径特征提取的方法,根据具体的应用解释模型的输出。其中 SGFL 能确定有助于模型准确性的特征,同时保持特征关系的可靠性。RRF 算法则通过利用所提出的改进随... ......

Linux中使用yum安装服务时会报:Existing lock /var/run/yum.pid: another copy is running as pid 3263.:解决方法

报错信息: 在下载服务时,不会显示正常的安装步骤,而是显示以上报错。 报错原因: 1、是因为yum已经在后台运行了,导致进程僵死。 解决方法: 1、把/var/run/yum.pid文件给删掉就好了。 执行命令: [root@k8s-master ~]# rm -rf /var/run/yum.pi ......
yum pid Existing another running

Logstash could not be started because there is already another instance using the configured data directory

#执行报错[root@logstash-95 ~]# logstash -f /etc/logstash/conf.d/stdin-test.conf Using bundled JDK: /usr/share/logstash/jdk OpenJDK 64-Bit Server VM warnin ......
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