<<上一章 ........................................................................12..................................................................................下一章>> 差点忘记赶了，见谅哈。没有提前，第一篇有说过是教师节这周，明天是教师节，刚好。 9.9日 八年级多了门物理。以为很枯燥但没想到老师挺有趣的： 物理老登：“你们两个，站起来！” （前体委（公的）与现体委（雄的）讲话被点起）（没有恶意，只是不想取化名，同下） “你们两个啊，我在上面讲，你们在下面讲。讲什么呢这么有趣？” （两体委不语只是一味低着头尴尬的笑） （语气高昂）“哦~你们两个在我的课上搞小动作，我就要让你们的家长听听你们上课都干了什么。家长会时我就说‘我们班有的男生在课上讲话’，有的女同学的家长就要紧张起来了‘唉？不会是和我家的小姑娘搞起来了吧？’，到时我再说：‘不过，是和男的讲话’。哦，原来不是和我们家孩子搞什么。” “你说说你们，两个男的上课聊那么投机，就是找个女的我也不说什么，偏偏要找个男的？我请问呢？” （恕我文采不好，描绘不出让旁观者捧腹大笑的氛围） —————————— “由前面的实验得出，声音的传播需要介质” “如果在月球上，有个探测器着陆了，我们能听到声音吗？” （众说纷纭） 我：“把人埋土里就行了” 雄性物理课代表（化名）：“在土里把耳朵贴在地上” （可惜老师并没有听见我们的意见） “我们不妨做出一点假设。比如月球里生活着一群……数学课代表（化名，刚被点起来回答问题，位子前排，雄性）。” “现在我们人类的探测器降落到月球上，刚好落在数学课代表家顶上。他们能听到声音吗？” 物理课代表：“还要把耳朵贴在墙上！” 老师（敲数学课代表的桌子）：“你听到了吗？” “我问你话呢，你怎么不应我？”…… 9.10日（唯物辩证法） 今天讲点干巴得。我也不知道我讲的明不明白，我自己也不是很懂。 引用豆包： 前面这一大段基本学过的才看得懂，看不懂也正常。 下面我要将自己的感受，当然我也不能说我说得是对的，甚至不能完全肯定的说我在讲辩证法，也不能每个点都讲到。 唯物辩证法认为，事物都是永恒改变的。比如差生可以变成学霸，oier可以回归普通人。从上帝视角来看，中外关系也是改变的。基本事实也是改变的，但不是从真实性，是从意义上。比如数学中1+1=2，游戏的装备、阵容上有时有1+1>2也有1+1<2，此时1+1=2的意义改变了，从“一个苹果+一个苹果=两个苹果”变成了“鞘翅+烟花火箭=赶路神器”或者“一本火焰附加I+一本火焰附加I=一本火焰附加II”。理解了事物的永恒改变，就可以做些离谱的事情。唯物辩证法也是永恒改变的，如果千百年后地球大一统甚至银河系大一统，辩证法的重要性就被黑暗森林法则取代了（很显然，和外星人讲道理并不比和地球人讲道理有趣），黑暗森林认为，我们被外星人发现就是你死我亡的下场，最终的结果是二元的；辩证法的角度，地内外关系的改变，从未发现到已发现，从战斗到和平，动机是科技的发展，解决也是发展科技，此之谓事物内部的对立与统一。科技的发展能让我们拥有对付三体人的手段，也会让三体人发现我们。不存在我们用科技封锁地球的情况，当三体人的科技超越我们一定程度时就会一眼看穿地球的伪装。对于三体人而言，并不是说封锁科技就能解决地球人的威胁。三体的结尾是三体文明与地球文明都凉凉了，三体人对地球科技的封锁只解决了地球人自身的隐患，没有解决这么醒目的蓝色弹珠的可见性。 对于LGBT的现象，正常人与LG人（姑且称作）都是人，一个人要是觉悟低（从常人角度）会变成LG人，一个人要是觉悟低（从LG人角度）就是常人。从人的角度，纠结LGBT就是觉悟低。从资本的角度，愿意为LGBT花钱（反对&支持）都是觉悟低……所以觉悟就不只是人的认知（一大段废话） 如果非要为这一大段云里雾里的废话作总结，那就是在全角度认识事物之前保持对其所有的怀疑，怀疑事情的起因（人的动机）、经过、结果是否真实，不真实又是什么人因什么动机不真实的。 9.11 讲太干巴的东西反而难为自己了。 一计害三贤 （无聊的室内操）tips：没有人收到伤害，请勿带入现实 学委：看班长的动作😁 班长（做作、大幅度的动作） 我：怪前凸后翘的。 学委：什么？😲 （室内操结束） 班长：你说我什么？（很显然被告状了） 我：什么？我可是大大滴良民 班长：那你在室内操的时候说我什么？ 我：那是学委说得，明显是他在诬陷我（甩黑锅） （班长去找学委） （我趁同桌前体委上厕所溜到他的位子上） 班长&学委：还诬陷人是吧？今天你吃不了兜着走（此时两人比我矮所以不知道我的位子是哪个） 我：冤枉呐！怎么可能是我干的？冤枉呐！😭（😆） （班长和学委在踩我面前桌上的书，很显然是我同桌的） （我回到自己的位子） 同桌：你们在干什么？ 班长&学委：不关你事！（此时还不知道真冤枉人了） 我：同桌，这两个人一直在踩你的书，拦都拦不住啊😓（😛） 同桌：学委我真是！#$%&%（违禁词） （班长与学委索性将错就错踩得更欢了） （同桌见没效果骂的更毒了） 我（👏👏👏） 上学期的新鲜事。无不良引导，请勿上升现实 很显然，我要说一句很显然。这三贤都因为没有人质疑我，就默认了我的话语都是真实情况，以偏概全，没有考虑我的动机和事情的起因，甚至在不了解座位主人的情况下就贸然对其施加迫害，到头来我成了最大受益者 9.12 我弟弟最近有次在梦中梦到了刷手机，这次就好好说一下 1.用史莱姆糊住手枪枪口就能让手枪吹泡泡； 2.把史莱姆扣在碗底，就会孵出小鸡，小鸡先从二维的方式挤出来，在升维变大； 3.把鸡蛋丢进粪坑，就会孵出史莱姆； 4.把防盗门拆下来（多多益善），揉成一坨，冲进马桶。这个时候肯定会堵住，再用马桶搋子吸出来，撒上酵母，过一晚上就会变成盾构机； 5.我的世界里的所有东西都变得像答辩一样（具体记不清了） 6（JOJO）.注意看，眼前这个小伙叫大头儿子。他突发奇想如果把光盘打上替身，能不能拥有它。它做了一个“白金之星.zip”的光盘，使劲插进脑壳，谁知真觉醒了替身。但是白金之星压得和纸一样薄，但是拳头锋利得跟刀一样，他高兴极了，立马出去乱打乱杀，结果被抓起来送进监狱了。他用白金之星把监狱门砸烂了。有天，白金之星被风吹走了，于是他有做了个“世界.zip”，虽然这个世界可以无限时停，但是因精神力不足替身直接消失。 7.所有的都是以直播的形式呈现的。甚至还有礼物（法拉利等），特效正常；还有评论，比如“这个方法太实用了，明天早上就要去试试” 9.13 各位想必都有做过课间操，今天的事就与课间操有关。 由于旧班长的疏忽，一开始给我们放的是前前学期的课间操，画质低劣，动作单一。某天被我们英勇的班主任发现了上学期的课间操，远比之前做得要水嫩。但是班主任居然只注意到我们某个动作的声音变大了，这才发现放错室内操了，实在是昏君呐。 上学期我的旧同事，也就是劳技课代表，因为富有野心今年分割到了一部分班长的权利（故被我们戏称“老师的走狗”），原来的旧班长因为失宠只被留了个官名和一大堆苦差（留给班长的也只有苦差）。我们的新班长，我的旧同事，虽然是无意的，但是他在我骂了老师昏君后踢到了我的膝盖。也许人是会变得吧，唉 9.14 不能吧，不是吧？5天了，阅读量都没变过？水区我都第3了（因为更新），难道没人想起我吗？真的要哭晕在厕所了😭 讲过唯物辩证法了，不管有没有看，反响够不够好，今天我要讲——存在主义 摘自deepseek 依我的个人观点，重复的就改不论述：（有错误还望矫正） 疫情后，有人说我们都死在了疫情，现在都阴的没变了；有人说，疫情全阳了，现在全阴了；有极端女权认为男厕所不应该有男人；嘉豪要戴口罩；中医开始挑拨西医的地位，改造人民群众对中医的认知。我的意思是，有些东西，注定要出现的，即使它不出现也会有替代品。比如牛顿坐在榴莲树下就会冒出一大堆科学家完成牛顿的研究，不是继续、复刻，是完成，人类的进程只是被拖延，但永远前进。对比网络出现的莫名其妙的东西，他们是否是一种惊醒，惊醒我们中还有这种品种的猪妞，告诫后人不要步入前尘。即使他们没有出现，几十年后也会有这种猪妞为祸人间，难道要等天下大同再放出这群猪妞阻碍历史进程？如果上帝存在，难道主观唯心主义者就变成客观唯心主义或唯物主义了？总会有一种东西、事物扮演所有东西中的一个角色，出现在我们身边，只是当下这个角色凑巧是它而已。比如，作业没有发明出来千百年后就不会有作业了？只是在余下的千百年还需要劳烦一位人物发明作业。 现在，再大胆一点，我的这篇文章，如果没有被我写出来，我也不知道我要写这篇文章，我自己也不是存在主义，难道各位就没有机会了解存在主义了吗？再这，假如存在主义没有被定义，没有人发现虚无主义的下一个阶段不是形形色色的主义而是存在主义，难道存在主义就不会被定义了吗？只是我们还需要等一位人，TA既是一位新人，也是一位故人，托他的福，让有的人有机会了解存在主义，成为存在主义（即使有些人一辈子也不是存在主义） 9.15 不能吧，怎么还只有几个人啊？为什么啊？ 今天没什么好写得，要是各位有意向分享自己知道的有意思的事，我会酌情补充上，会署名。

A805.空气调节——青铜 普及/提高- USACO 通过率：0% 加入题单 题目描述 农夫约翰的奶牛 � N对他们的房间温度非常挑剔 谷仓有些奶牛喜欢温度较低，而另一些则喜欢 更喜欢温暖。 农夫约翰的谷仓里有一系列 � N个档位，编号 1. … � 1…N， 每个包含一头奶牛。这个 � 第i头牛喜欢她的温度 待失速 � � </p> 我 ，而现在她的摊位里的温度是 � � t 我 在里面 为了确保每头牛都感到舒适，农夫约翰安装了一种新的空气 以某种有趣的方式控制的空调系统。他可以 向系统发送命令，告诉其升高或降低 连续一系列失速中的温度增加1个单位——例如“升高” 失速时的温度 5. … 8. 5…8乘1单元”。该系列摊位可以 短到只有一个摊位。 请帮助Farmer John确定他需要的最小命令数 送他的新空调

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 加精了\tiny 加精了加精了 本篇讲解哈希算法，这是一种在很多领域都有运用的算法。 > 目录 > > > > 1.简介 > > > > > > 2.关键性质 > > > > > > 3.核心思想 > > > > > > 4.单哈希算法 > > > > > > 5.双哈希算法 > > > > > > 6.无符号长整型溢出法 > UPD 10.5，增加随机模数哈希算法。 ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ PART 1. 简介 哈希算法在编程竞赛中的主要应用是把一个字符串映射为一个数字（通常会取模）来把O(n)O(n)O(n)的字符串比较问题转化为O(1)O(1)O(1)的数字比较（当然预处理不是O(1)O(1)O(1)的）。 PART 2. 关键性质 哈希算法主要有以下性质 1. 确定性 * 相同的输入必定产生相同的哈希值（也是哈希算法的基础） 2. 高效性 * 计算哈希值的过程应该很快 3. 雪崩效应 * 输入的微小变化会导致输出的巨大差异 * 例如"aelloaelloaello"和"hellohellohello" 的哈希值应该完全不同 4. 抗碰撞性（这个指标是用来判定哈希冲突的） * 弱抗碰撞性：给定一个输入，很难找到另一个不同的输入产生相同的哈希值 * 强抗碰撞性：很难找到任意两个不同的输入产生相同的哈希值 PART 3. 核心思想 哈希算法的核心思想在于，将字符串的每个字符对应成0~25的数字，再将整个字符串映射为一个kkk进制数（kkk通常取128128128）模一个大质数（比如1e91e91e9、998244353998244353998244353）。 具体实现不难，只需预处理128128128的幂次就可以轻松实现。 PART 4. 单哈希算法 单哈希算法即只用一个数作为模数。 实现并不难，模板代码就不给了，给出一道例题 PART 5. 双哈希算法 这是我们重点讲解的算法。 要想学习双哈希算法我们首先得了解—— 哈希冲突\HUGE 哈希冲突哈希冲突 相信很多读者会发现：哈希算法是基于映射和取模的，那岂不是很好hackhackhack？只要构造两个取模后相等的字符串不就好了？没错，这就是哈希冲突，双哈希算法就是用以解决哈希冲突的。 那么我们如何解决哈希冲突呢？很粗暴，就是用两个不同的模数来判断，如果两个字符串所映射的数字模两个数都相等，那么他们大概率就是相等的。 但是！\HUGE 但是！但是！ 这时候，聪明的同学就说了，主包主包，那还是可以hackhackhack啊？没错，如果你采用固定模数，别说双哈希，哪怕是十哈希也没有用！ 所以！\HUGE 所以！所以！ 我们一般使用随机模数哈希！ > 注：一个实用技巧，哈希在实战中常常使用前缀的形式，详见后面的代码。 下面给出一道例题 代码（固定模数）： 我在其中封装了两个哈希结构，不会封装的也可以分开写。 PART 6. 无符号长整型溢出法 双哈希固然好用，但是实现非常困难也没多困难，所以，我们隆重推出懒人写法—— 无符号长整型法，即unsignedunsignedunsigned longlonglong longlonglong。 这个算法基于无符号长整型溢出后自动取模的特点，但是有小概率被卡CSP被卡别怪我 还是给一道例题 代码： ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 大概是史上最短创作计划了，萌新有什么看不懂的可以在评论区留言，也欢迎大佬给出珍贵的建议，@AC君求精。

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📅 近期团队邀请赛 * 此帖我们将长期置顶，欢迎大家投递比赛！ ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ #1 项目 详情 赛事名称 xiaoyang111 牌欢乐赛 竞赛时间 2024-07-23 12:59 至 2024-08-31 12:59 (时长：39天) 出题人链接 叫我杨同学 赛制 IOI 邀请码 szhR #2 项目 详情 赛事名称 xiaoyang111 牌欢乐赛2 竞赛时间 2024-08-03 23:00 至 2024-09-30 23:59 (时长：58天59分） 出题人链接 叫我杨同学 赛制 IOI 邀请码 pQQX ✍️长期征集比赛投稿 ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 🚀 投稿要求： * 出题人排位分需超过240分。 * 欢迎在留言区积极投递比赛。 📝 投稿格式： 💡 提示：请在投稿时填写您的具体排位分，并确保链接的有效性。此帖我们将长期置顶，欢迎大家投递比赛！

舍门 第一章：初入迷雾 第二章：无人别墅区 ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 诡异之门 第一章：入门+第二章：惩罚 ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 番外 诡异之门番外#1 舍门番外#1 ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 故事的梗概 萧秋水意外进入了诡舍，在很多人的帮助下，他虽然打开了迷雾世界的终点，但失去了那些帮助他的人，而且他也不是曾经的他了…… ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 读者 什么时候开始读 新手小小白 2025-07-14 17:04 ༺ཌༀ我要上南开ༀད༻ 2025-07-13 17:40 进团也提前可以观看 1.南开大学 2.超级大帅哥 3.C++知识练习（复习+自习室） 4.北欧联邦同盟国 ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 彩蛋 （第三章我在搞） 暂无 ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 问答 暂无

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该算法能过不亚于 n2n^2n2 过百万。

https://www.acgo.cn/problemset/info/79834 能做出来代表****** 已经死了

https://www.acgo.cn/problemset/info/79834 能做出来代表****** 已经死了

告诉你们一个关于@STARS_SEEKER的身份秘密： 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沙发

输入一个 8×88\times88×8 的 .Q.Q.Q 矩阵，试试结果

给个关吧！乞讨ing!

这是一个非常NB的材质包 ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 不仅有鸡哥 还有小猪佩奇 帅气的超人弱 不知名村民 不知名铁傀儡 还有牢大 海绵bb 热情的国宝 巴嘎雅路的沸羊羊桑 还有想看的私信 陶源 注：此材质包不为陶源所创

有狂野飙车9的玩家吗？在线等！！！！！

#include<bits/stdc++.h> using namespace std; const int N=1e5+10; int a[N]; long long sum=0; int main(){ int n,x; cin>>n; for(int i=1;i<=n;i++)cin>>a[i]; cin>>x; for(int i=1;i<=x;i++)sum+=a[i]; cout<<sum; return 0; }

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