foggy

第 1 个问题 To help you practice strategies for machine learning, in this week we’ll present another scenario and ask how you would act. We think this “simulator” of working in a machine learning project will give a task of what leading a machine learning project could be like! You are employed by a startup building self-driving cars. You are in charge of detecting road signs (stop sign, pedestrian crossing sign, construction ahead sign) and traffic signals (red and green lights) in images. The goal is to recognize which of these objects appear in each image. As an example, the above image

大家好，我是良许。 相信大家平时都会有需要复制粘贴数据的时候，如果是打开文件进行复制粘贴，就不可避免的需要较多的鼠标与键盘的操作，就会比较繁琐。那么有没有可以省掉这些繁琐操作的复制粘贴的方法呢？ 答案是肯定的，那就是重定向。重定向是一种高效的方法，无需大量的鼠标与键盘操作就可以完成数据的转移。重定向可以分为输入重定向以及输出重定向这两种类型。由于所有程序都有输入或者输出，因此输入和输出的重定向是任何编程语言或脚本语言都自带的功能。 每当你与计算机交互时，重定向就必然会发生。学会使用重定向，不仅可以让你与计算机更好地交互，还可以提高你的工作效率，因此，请让良许为你讲解 Linux 系统中重定向的常见用法： Linux 中的数据流 谈到 Linux 的重定向，就不得不提以下这3种数据流： 输入信息会从 stdin 中读取（标准输入，通常是键盘或鼠标）。 输出信息会被输出到 stdout （标准输出，一个文本文件或者数据流）。 错误信息会被输出到 stderr 。 了解了这些数据流的存在，在你使用 Shell 时，你就可以更好地控制数据的流向了。 在 Linux 系统中，标准输入，标准输出以及标准错误都作为文件存在。 你可以在 /dev 目录下看到它们： $ ls /dev/std* /dev/stderr /dev/stdin /dev/stdout 重定向输出 在 Linux 系统中

题目： Patrick likes to play baseball, but sometimes he will spend so many hours hitting home runs that his mind starts to get foggy! Patrick is sure that his scores across n sessions follow the identity permutation (ie. in the first game he scores 1 point, in the second game he scores 2 points and so on). However, when he checks back to his record, he sees that all the numbers are mixed up! Define a special exchange as the following: choose any subarray of the scores and permute elements such that no element of subarray gets to the same position as it was before the exchange. For example,

题目： Patrick likes to play baseball, but sometimes he will spend so many hours hitting home runs that his mind starts to get foggy! Patrick is sure that his scores across n sessions follow the identity permutation (ie. in the first game he scores 1 point, in the second game he scores 2 points and so on). However, when he checks back to his record, he sees that all the numbers are mixed up! Define a special exchange as the following: choose any subarray of the scores and permute elements such that no element of subarray gets to the same position as it was before the exchange. For example,

#$\mathcal{Day \ \ -3}$ 作为前言来讲，我对于过几天的省选培训还是很期待的……就算我的实力根本不够，名额是学校推荐的，但是能见到$\mathcal{cwbc}$以及一众大佬，也是很够的了，至于听懂多少emmm再说吧（逃 虽然还不知道到底课上讲什么，不过问了问$rqy$,他是这么描述的： ###“这个培训就是认为你什么都会了，然后开始讲题和各种技巧。” 好像$\mathcal{starfish}$？不过话说我对于力量一无所知省选以上的知识，只限于……线段树？Splay？剩下的好像就不大会了QAQ……（如果口胡的也算的话，那么应该还会有什么莫比乌斯反演、狄利克雷卷积、主席树、树链剖分、网络路之类的QAQ）……但是我觉得好像够了【$Flag \ \ Warning$ 嗯，立个$flag$起码听懂百分之二十！ #$\mathcal{Day \ \ 0}$ 今天下午去了培训地点……离我家挺近的……三四公里吧，在一座荒山雄伟的山上（“雄伟” means that “爬上去很费劲”），不过上机环境不知道比NOIp和qbxt高明到哪里去了，感觉十分的$\mathcal{starfish}$！！ 嗯……发了营服，上面写着山东队……真是羞耻啊（虽然好像可以装一波QAQ）,加油吧bvb！ #$\mathcal{Day \ \ 1}$ 真是天道好轮回，苍天饶过谁啊！（大雾

<font face = "微软雅黑"><h2 style = "color:red">(二)主语/宾语/表语的变化</h2> <h3>1. 名词/代词</h3> <span></span><ins>Most graduates</ins> always want <ins>a big-firm job</ins>. <span></span><ins>She</ins> is <ins>the leader</ins> of the organization. <span></span><ins>They</ins> gave <ins>us</ins> <ins>a good impression</ins>.<br><br> <h3>2. doing/to do</h3> <span></span><ins>Laughing</ins> probably has great influence on health. <span></span><ins>To laugh</ins> probably has great influence on health. <span></span><ins>It</ins> probably has great influence on health <ins>to laugh</ins>.<br><br> <span></span>