shadow the dog and
Codeforces Round 845 (Div. 2) and ByteRace 2023 B. Emordnilap
给一个长为 $n$ 的排列，对于它的每一个排列 $p$ ，复制一份并 $reverse$ 拼到原排列的后面得到 $a = \left [p, p_{reverse} \right ]$ 。 求 $p$ 的所有排列对应的 $a$ 的逆序对数之和，结果对 $1E9+7$ 取模。 **逆序对贡献**： * ......
* Codeforces Round 885 (Div. 2) A. Vika and Her Friends
给一个 $n \times m$ 的网格，每个格子对应一个坐标 $(a, b)$ 。如果存在一个各自的坐标为 $(c, d)$ 且满足 $|a - c| + |b - d| = 1$ ，则称 $(a, b)$ 与 $(c, d)$ 相邻。 给出 $k + 1$ 个点，初始坐标分别为 $(x_0, y ......
【题解】CF1852C Ina of the Mountain
我们先从题目的一部分入手。 如果说，我们没有当一个数为 $0$ 时，让这个数变成 $k$ 的性质，我们如何求答案呢？ 很简单，在图上就是： 绿色线段的长度加起来即为答案（本图中是 $6$） 我们考虑很显然地，将一个数从 $0$ 变为 $k$ 即为将一个数一开始加上 $k$ 我们如果要让第 $i$ 列 ......
1521A - Nastia and Nearly Good Numbers
## A. Nastia and Nearly Good Numbers https://codeforces.com/problemset/problem/1521/A ```python """ 思路： 1.就是普通的打印，NO的情况是只有b=1的时候才会出现，其他的都是YES，如果不想再继续分 ......
It is strongly discouraged to install anything else in the base envionment
For both mamba and conda, the base environment is meant to hold their dependencies. It is strongly discouraged to install anything else in the base en ......
SLAMesh论文及代码阅读与思考<五>Real-time LiDAR Simultaneous Localization and Meshing
# 前言 本节重点对filterMeshGlb()函数进行理解。该函数在可视化模块中重点对全局地图中的每个栅格进行mesh的生成。一开始我的疑惑是代码是如何实现相邻cell之间的mesh连接的，这个应该具有较大的挑战性。其实，代码只考虑栅格内部的mesh的生成，全局mesh地图也就是mesh的并集， ......
The Riordan Group and Applications 第1章 笔记
2022年的一本书，只有376页。证明直接去书里面找。 [TOC] # 1 介绍 ## 1.1 啥是RiordanArray ## 1.2 起源和研究动机 ## 1.3 基础的应用 $$ \mathfrak{B}_r=\sum_{n \geq 0} \frac{1}{(r-1) n+1}\left( ......
The 2022 ICPC Asia Hangzhou Regional Programming Contest
The 2022 ICPC Asia Hangzhou Regional Programming Contest No Bug No Game #include<bits/stdc++.h> using namespace std; #define endl "\n" #define int lon ......
The 2022 ICPC Asia Nanjing Regional Contest
链接：[https://codeforces.com/gym/104128](https://codeforces.com/gym/104128) ## A. Stop, Yesterday Please No More ```cpp #include "bits/stdc++.h" using n ......
The 18th Heilongjiang Provincial Collegiate Programming Contest
链接：[https://codeforces.com/gym/104363](https://codeforces.com/gym/104363) ## A. Magic Computer ```cpp #include "bits/stdc++.h" using namespace std; us ......
CSS filter drop-shadow All In One
CSS filter drop-shadow All In One
CSS 滤镜投影
背景虚化
光晕特效
......
The 10th Shandong Provincial Collegiate Programming Contest
链接：[https://codeforces.com/gym/104459](https://codeforces.com/gym/104459) ## A ```cpp #include "bits/stdc++.h" using namespace std; using i64 = long l ......
The 17th Chinese Northeast Collegiate Programming Contest
链接：[https://codeforces.com/gym/104366](https://codeforces.com/gym/104366) ## A. Cask Effect ```cpp #include "bits/stdc++.h" using namespace std; using ......
安装cocoapods: Error installing cocoapods: The last version of activesupport (>= 5.0, < 8) to support your Ruby & RubyGems was 6.1.7.6. Try installing it with `gem install activesupport -v 6.1.7.6`问题解决
问题描述: 在终端命令行安装cocoapods时,可能出现如下问题: Error installing cocoapods: The last version of activesupport (>= 5.0, < 8) to support your Ruby & RubyGems was 6.1 ......
Proj CDeepFuzz Paper Reading: Differential Testing of Cross Deep Learning Framework APIs: Revealing Inconsistencies and Vulnerabilities
## Abstract 背景：目前对cross-framework conversion中的inconsistencies和security bugs的研究少有 本文：TensorScope Task: test cross-frame APIs in Machine Learning Librar ......
[LeetCode] 2433. Find The Original Array of Prefix Xor
You are given an integer array pref of size n. Find and return the array arr of size n that satisfies: pref[i] = arr[0] ^ arr[1] ^ ... ^ arr[i]. Note ......
css: SVG and CSS
https://developer.mozilla.org/en-US/docs/Web/SVG/Tutorial/SVG_and_CSS 两种方式的CSS SVGCSS: /*** SVG demonstration ***/ /* page */ svg { background-color: ......
SLAMesh论文及代码阅读与思考<四>Real-time LiDAR Simultaneous Localization and Meshing
# 前言 本节继续对update()函数进行理解。update是将当前点云对应的map_now对全局地图map_glb进行更新。 ## 获取重叠的区域 `OverlapCellsRelation overlap_ship = map_now.overlapCells(*this);` ```c++ ......
大模型时代的推荐系统Recommender Systems in the Era of Large Language Models (LLMs)
文章地址：https://arxiv.org/abs/2307.02046 笔记中的一些小实验中的模型都是基于GPT-3.5架构的ChatGPT模型。 本文主要讲述了比较具有代表性的方法利用LLM去学习user和item的表示，从预训练、微调和提示三个范式回顾了近期用于增强推荐系统的LLM先进技术， ......
error: The following untracked working tree files would be overwritten by merge
错误内容如下： error: The following untracked working tree files would be overwritten by merge: xxx/xxx/xxx/xxx/xxx/xxx/xxx.java Please move or remove them b ......
B. Fedor and New Game
## B. Fedor and New Game https://codeforces.com/problemset/problem/467/B ```python """ 467B 思路： 1.暴力方法： 通过循环二进制之后的，逐个位与fedor进行判断，通过取余，如果最后不同的超过3个就计+1 ......
The 2nd Universal Cup. Stage 1: Qingdao
### G #### Description 给定一个数列，每次ban一个位置，在每次ban之前，求连续子序列逆序对数的最大值，强制在线。（6s）$n\leq10^5, \sum n \leq10^6$ #### Solution 先考虑用权值线段树来维护区间逆序对数，不难支持在原数列前后加或删除一 ......
The colossus
BY SYLVIA PLATH I shall never get you put together entirely, Pieced, glued, and properly jointed. Mule-bray, pig-grunt and bawdy cackles Protected fro ......
XOR and Favorite Number题解
## XOR and Favorite Number题解 ### 思路引导 这一道题主要是为了说明莫队算法和分块之间的联系。 先主要讲讲莫队的用处吧。 它是个离线算法，维护两个指针l,r。 移动l和r的时候顺便进行更改，维护好l-r区间内的某个值。 对于询问区间的排序，遵循l所在的分块相同，其次是r ......
Position-Enhanced and Time-aware Graph Convolutional Network for Sequential Recommendations
# Position-Enhanced and Time-aware Graph Convolutional Network for Sequential Recommendations [TOC] > [Huang L., Ma Y., Liu Y., Du B., Wang S. and Li ......
Scheduling and Resource Allocation
Module aims Real-life problems arising in computer science, computational management and economics often involve deciding the best way to use a given ......
[AIGC] a brief summary for this week, replica and localGPT
In this week, I experienced two main projects, replica and localGPT. ## replica demo:  an ......