洛谷题目页面传送门 & AtCoder题目页面传送门 若一个字符串\(a\)有\(<|a|\)的循环节，我们称它是循环的。给定一个字符串\(a,|a|=n\)，求它最少能被分成多少个子串，使得每个分成的子串都不循环，并求分成最少数量个子串的方案数。第\(2\)问答案对\(10^9+7\)取模。 \(n\in\left[1,5\t
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文章目录1.背景2. 单种运输工具带时间窗2.1 带时间窗车辆路径问题的描述2.2 遗传算法的求解2.2.1 编码方案的设计2.2.2 种群初始化2.2.3 约束处理与适应度函数2.2.4 选择算子2.2.5 交叉算子2.2.6 变异算子2.2.7 其他部分2.3 粒子群算法的求解3. 多种运输工具不带时间窗3.1
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目录 题目原文 Input Specification: Output Specification: Sample Input: Sample Output: 题目大意: 反思: 总结 首先,先贴柳神的博客 https://www.liuchuo.net/ 这是地址 想要刷好PTA,强烈推荐柳神的博客,和算法笔记 题目原文 To evaluate the performance of our first
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我们已经知道了将N个整数按从小到大排序的冒泡排序法。本题要求将此方法用于字符串序列，并对任意给定的K（<N），输出扫描完第K遍后的中间结果序列。 输入格式： 输入在第1行中给出N和K（1≤K<N≤100），此后N行，每行包含一个长度不超过10的、仅由小写英文字母组成的非空字符串。 输出格式：
1012 The Best Rank (25分) To evaluate the performance of our first year CS majored students, we consider their grades of three courses only: C - C Programming Language, M - Mathematics (Calculus or Linear Algrbra), and E - English. At the mean time, we
按正常理解php的变量是引用计数，第一次创建变量refcount会是0，当把这个变量赋给新的变量时，refcount会加1 但是，经过测试，php7.0.33下和php7.3.11下效果都不是按照这个来的 代码： $val = "taoshihan best"; xdebug_debug_zval('val'); $copy = $val; xdebug_debug_zval('val'); php7.0
1012 The Best Rank (25分) To evaluate the performance of our first year CS majored students, we consider their grades of three courses only: C - C Programming Language, M - Mathematics (Calculus or Linear Algrbra), and E - English. At the mean time
此篇代码接着上一篇，这里查看https://blog.csdn.net/qq_42871249/article/details/104456690 模型的保存与载入 先将模型保存的函数调出来，存贮为checkpoint from keras.callbacks import ModelCheckpoint checkpoint = ModelCheckpoint(filepath = r'F:\learning_kecheng\de
To evaluate the performance of our first year CS majored students, we consider their grades of three courses only: C - C Programming Language, M - Mathematics (Calculus or Linear Algrbra), and E - English. At the mean time, we encourage students by emphas
Farmer John's farm consists of a long row of N (1 <= N <= 100,000)fields. Each field contains a certain number of cows, 1 <= ncows <= 2000. FJ wants to build a fence around a contiguous group of these fields in order to maximize the avera
粒子群算法优化广义神经网络（PSO_GRNN） 这里分享最近研究重现的一篇文章，核心算法是广义神经网络GRNN，依据岩石的抗拉强度、弹性能量指数等四个特征对岩爆危险等级的一种预测。算法思路比较简单，论文《基于粒子群算法和广义回归神经网络的岩爆预测 》欢迎大家引用原文~ 这里附上主
优化算法时间复杂度 算法的时间复杂度对程序的执行效率影响最大，在Python中可以通过选择合适的数据结构来优化时间复杂度，如list和set查找某一个元素的时间复杂度分别是O(n)和O(1)。不同的场景有不同的优化方式，总得来说，一般有分治，分支界限，贪心，动态规划等思想。 减少冗余数据
Attention Is All You Need Abstract The dominant sequence transduction models are based on complex recurrent or convolutional neural networks that include an encoder and a decoder. 显性序列转换模型基于复杂的递归或卷积神经网络，包括编码器和解码器。 The best perfo
1012 The Best Rank (25分) To evaluate the performance of our first year CS majored students, we consider their grades of three courses only: C - C Programming Language, M - Mathematics (Calculus or Linear Algrbra), and E - English. At the mean time,
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Best Resources for Imbalanced Classification 2019-12-26 08:47:39 Source: https://machinelearningmastery.com/resources-for-imbalanced-classification/ Classification is a predictive modeling problem that involves predicting a class label for a give
1048 Longest String Chain Given a list of words, each word consists of English lowercase letters. Let's say word1 is a predecessor of word2 if and only if we can add exactly one letter anywhere in word1 to make it equal to word2. For example, "a
ANSAC算法的输入时一组观测数据，一个可以解释或者适应于观测数据的参数化模型，一些可行的参数。 RANSAC通过反复选择数据中的一组随机子集来达成目标。被选取的子集被假设为局内点，并用下述方法进行验证： 有一个模型适应于假定的局内点，即所有的未知参数都能从假设的局内点计算得出； 用1
COMP523 - 2019 - Second CA AssignmentAdvanced Algorithmic TechniquesAssessment InformationAssignment Number 2 (of 2)Weighting 12.5%Assignment Circulated 15 Nov 2019Deadline 1 Dec 2019, 16:00Submission Mode Please submit your solutions electronically (PDF
kNN kNN算法的原理很简单，就是将新数据的特征与样本集中相应的特征进行比较，然后提取将样本集中特征最相似的数据的分类标签作为新数据的标签，一般的，只选取数据集中前k个最相似的元素，因此该算法被称为kNN，通常k取不大于20的整数。 下面看书上给出的实例： from numpy import
https://loj.ac/problem/10012 题目描述 有一个长度为n的正整数序列，求一个长度不小于L，平均数最大的子段，输出其平均数的1000倍（整数） 思路 我们可以二分结果，寻找是否存在长度不小于为L的子段的平均数大于二分答案。 那我们考虑将序列中的每一个数都减去二分答案，如果有
CIVL3431[6431*] – Land Surface Processes and ManagementAssignment 2 – Hydrologic Modelling and Sensitivity Analysis 30 % [24%*]Due: 27th September Friday 5 pmThis assignment uses a simple lumped rainfall-runoff model, consisting of two storage ‘buckets’ (
