Subarray whose absolute sum is closest to k. A subsequence is an array that .
Subarray whose absolute sum is closest to k. Conoce el proceso diseñado para que tu admisión en el nivel académico de tu elección sea una experiencia agradable, ágil y sencilla. Mi portal: . Send and receive messages and files with ease, all for free. Oct 13, 2022 · I purchased an account from Helen Wong who appears to have very high seller ratings on G2g. 0/10 沉寂三年，Billie Eilish终于发行了她的第三张录音室专辑《HIT ME HARD AND SOFT》，让人等的花都要谢了：尽管这中间发了与Barbie合作的《What Was I Made For?》、自己随性写的EP《Guitar Song》以及各类合作。 Bilie Eilish，国内粉丝称她为“碧梨”。 这个一脸厌世的小姑娘虽然看着霸气侧漏，但却是个货真价实的00后，2001年12月出生的她，其实到现在还是个未成年。 如何评价Billie Eilish的新专辑《Happier Than Ever》？ 《Happier Than Ever》是美国女歌手比莉·艾利什的第二张录音室专辑，于2021年7月30日发行，你听了吗？ Billie Eilish 本名Billie O’Connell，2001年出生于美国洛杉矶。 父亲是一位 演员兼音乐编剧， 母亲是一位 歌手， 碧梨还有一个哥哥，Finneas O’Connell，也是一位 创作歌手。 比莉•艾利什（Billie Eilish），2001年12月18日出生于美国加利福尼亚州洛杉矶，美国女歌手、词曲作者、模特。 2015年，她在网上发布了个人首支单曲《Ocean Eyes》，并因该曲受到了关注。 最近火遍全球的歌曲，碧梨·艾利什（Billie Eilish）的《bad guy》，整首歌就构建于一个很“洗脑”的合成器riff之上： Riff在乡村乐中也偶有运用，比如被中国广大听众誉为“乡村歌王”的约翰·丹佛（John Denver），就有不少歌曲是整体构建于riff之上的。 Billie Eilish 的《bad guy》是什么音乐类型？ 雷鬼，放克，都有点挨边像啊？ 关注者 7 被浏览 FINNEASは、歌手Billie Eilishの兄であり、彼女の音楽制作において重要な役割を果たしています。 这几天，我在2019年写的那篇批评Billie Eilish的文章，被不少碧梨粉丝翻将出来，问我脸痛不痛啊，邹小阴老师的高峰时刻，不愧是行业冥灯之类。 于是，赶在今天Billie Eilish凭借《No Time To Die》获第94届奥斯卡“最佳原创歌曲奖”的大好日子，我们来再谈一次碧梨。 switch520最新的地址是什么呢？ 显示全部 知乎，中文互联网高质量的问答社区和创作者聚集的原创内容平台，于 2011 年 1 月正式上线，以「让人们更好的分享知识、经验和见解，找到自己的解答」为品牌使命。知乎凭借认真、专业、友善的社区氛围、独特的产品机制以及结构化和易获得的优质内容，聚集了中文互联网科技、商业、影视、时 近日，雅虎Yahoo发布官方通知邮件称， 雅虎邮箱将在2月28日停止中国大陆地区服务，在截止日前用户可登录下载备份。 据雅虎通知，2月28日前用户可下载备份通讯录、日程等； 2月28日后，则无法再从中国大陆接收或者发送电子邮件。 Nov 3, 2021 · 据雅虎中国官网公告，2021年11月1日起，用户无法从中国大陆使用Yahoo的产品与服务，但不影响Yahoo在全球其他地方的产品及服务。 先说结论， 与他人交流，使用 QQ 邮箱。 用于注册，使用 Outlook。 域名邮箱是电子邮箱管理的终极解决方案 0. There are certainly resellers that ITAD doesn't cover; sometimes it's because they're gray-market sites that you wouldn't ethically want to use, but I'm sure there are also sites that they simply don't know about, haven't gotten to yet, or have trouble scraping. May 26, 2023 · No, I recently sold Diablo 4 item on g2g website to CNLTeam which was my first ever sell and not familiar with the process. Documentation for new users, developers, administrators, and all of GitHub's products. Si puedes iniciar sesión pero tienes problemas con Outlook. Problem Description You are given an array of integers nums and an integer k. The Lutheran Confessions represent the result of more than 50 years of earnest endeavor by Martin Luther and his followers to give Biblical and clear expression to their religious convictions. Continuous Subarray Sum in Python, Java, C++ and more. Sign in to access your Outlook email account. Jul 24, 2025 · Easy Problems on Subarray: Split an array into two equal Sum subarrays Check if subarray with given product exists in an array Subarray of size k with given sum Sort an array where a subarray of a sorted array is in reverse order Count subarrays with all elements greater than K Maximum length of the sub-array whose first and last elements are same Check whether an Array is Subarray of another Aug 1, 2025 · Given an array arr [] of n integers and an integer target, find the sum of triplets such that the sum is closest to target. This problem is related to subarray sum Can you solve this real interview question? Subarray Sum Equals K - Given an array of integers nums and an integer k, return the total number of subarrays whose sum equals to k. I wasn't able to see the traffic that gives the answer. 邮箱和密码设置完,点击 Yahoo中文邮箱的停用，确实让许多老用户感到无奈和委屈。毕竟，陪伴了十多年的邮箱，突然说停就停，难免让人措手不及。面对这种情况，首先要解决的是如何妥善处理第三方登录和邮件转移的问题。别急，我来给你支几招。 1. Hello folks! I've been a wee bit stupid and bought a steam account instead of a key, pretty sneaky but it's my fault I didn't… I only play rogue so we have 0 gold farms. If there is a prefix with a sum equal to (currSum – target), then the subarray with the given sum is found. GitHub Desktop Experience Git without the struggle Whether you're new to Git or a seasoned user, GitHub Desktop simplifies your development workflow. You can choose any subsequence of the array and sum all of its elements together. Find Lessons that you can download for your children or classes at the God’s Hand in Our Lives site. Join the world's most widely adopted, AI-powered developer platform where millions of developers, businesses, and the largest open source community build software that advances humanity. Your task is to find the total number of subarrays whose sum equals to k. S. In-depth solution and explanation for LeetCode 523. 5 days ago · They are 10 special statements of faith that Lutherans have adopted as official confessions of what they believe. GitHub is where people build software. Feb 14, 2025 · The subarray {2, 2, -1, 5} gives sum as 8 which has abs (8-7) = 1 which is same as that of the subarray {2, -1, 5} which has abs (6-7) = 1. Download free Microsoft Outlook email and calendar, plus Office Online apps like Word, Excel, and PowerPoint. More than 150 million people use GitHub to discover, fork, and contribute to over 420 million projects. So he got the items and I did not get the money. In the past i have done the gbank method in wrath. Dec 19, 2023 · So is G2G a total scam or is it just whether or not you get lucky 2 months down the line that you still have your account. See property values. Al terminar, seleccionar Acceso. Jul 11, 2025 · Given an array of n non-negative elements and an integer K, the task is to find the contiguous subarray whose sum of elements shows the minimum deviation from K. Trulia. com) Write a function that returns the total number of contiguous subarrays within a given integer array whose elements sum up to a target K. Si el estado no se muestra de color verde, espera a que el servicio funcione con normalidad y vuelve a intentarlo. Descarga el correo y calendario gratuito de Microsoft Outlook, además de las aplicaciones de Office Online como Word, Excel y PowerPoint. tecmilenio. trueWell, shows you the lowest price from the stores they cover, then. Note: If there are multiple sums closest to target, print the maximum one. Normally i just run gdkp’s but now that gdkp can result in a perma ban it is actually safer now to just buy gold. May 12, 2017 · Yahoo邮箱设置第三方客户端授权 邮件客户端登录不了 yahoo邮箱 将Yahoo邮箱绑定到第三方客户端，默认是会被Yahoo阻挡的，那么如何成功的为第三方客户端绑定Yahoo邮箱，实现对Yahoo邮箱的收发管理呢？下面我们一起来看看吧！ 以MozillaThunderbird 为例: 第一步 添加邮箱----->. This means the elements must be consecutive in the original array. Founded in 1960 in Minnesota, it has approximately 85 congregations in 24 U. Search homes for sale, new construction homes, apartments, and houses for rent. I dont have time to level an alt. Subarray: A subarray of an array is formed by deleting some (possibly zero) elements from the beginning or end of the array. Search millions of for-sale and rental listings, compare Zestimate® home values and connect with local professionals. Jul 28, 2025 · [Expected Approach] Using Hash Map and Prefix Sum - O (n) Time and O (n) Space If you take a closer look at this problem, this is mainly an extension of Subarray with given sum. Example 1: Input: Jul 11, 2025 · Given an array 'arr' consisting of integers, the task is to find the non-empty subset such that its sum is closest to zero i. This video explains a very important programming interview problem which is to count the number of subarrays in a given array with sum exactly equals to K. It subscribes to the Lutheran Confessions (the Book of Concord, 1580) as an accurate presentation of what Scripture teaches. This is leetcode #560 coding problem. Llenar los campos seleccionados con asterisco (*) de pago R_EC_ No . Is this actually allowed? I've looked up old posts like this and the only answer people gave was that someone would be using a stolen credit card. In-depth solution and explanation for LeetCode 560. ¿Dar clic aquí para Ayuda con Acceso? Como contingencia por el problema de acceso a través de Mitec, puedes acceder a estos servicios vitales dando clic en los botones siguientes. Real-World Applications The “Subarray Sum Equals K” problem and its variations have several real-world applications: Financial Analysis: Identifying periods in financial data where the cumulative sum reaches a specific target, useful in stock market analysis or budget tracking. May 5, 2013 · And then sort this S according to the element value, along with its original index information kept, to find subarray sum closest to 0, just iterate the S array and do the diff of the two neighboring values and update the minimum absolute diff. The first version doesn’t specify the number of items we can choose. Aug 10, 2009 · 英語『g2g』はなんて解釈すればいいですか？この前アメリカのフレンドとバトルフィールドをやっていたら、『ig2gSrrybye』と送られました。 どう解釈すればいいですかねぇ？どなたか教えて下さいm ( Is buying In-game cosmetics outside of league illegal? A lot of my friends have used G2G or Hextech Store to buy capsules and got all the rewards they bought without getting banned or punished. Find Subarray With Bitwise OR Closest to K - You are given an array nums and an integer k. Far more than historical documents, they are still viewed today as a definitive statement of what it means to be Christian and Lutheran. In speaking of our Confessions we dwell on facts that should make the heart of every Lutheran swell with joy and thanksgiving. Obtenga información sobre cómo iniciar sesión en su buzón de Outlook o Hotmail con su cuenta de Microsoft. absolute difference between zero and the sum is minimum. . Hence, we can select as many items as we want, as long as their sum is as Merge Step: During the merge step, we merge the sorted prefix sums and check the closest pairs, which gives us the subarray closest to zero. Como não consigo ligar, não tenho como pegar o código. Jun 10, 2020 · This problem can be efficiently solved using approaches such as prefix sum or the two-pointers technique Given an array of N elements, print the total number of sub-arrays whose sum value is greater than or equal to K. Can you solve this real interview question? Find the K-Sum of an Array - You are given an integer array nums and a positive integer k. It emphasizes that understanding these methods is crucial for technical interviews and real-world applications, as they enhance problem-solving Feb 2, 2015 · 5 Given an array of N integers (positive and negative), find the number of contiguous sub array whose sum is greater or equal to K (also, positive or negative) I have managed to work out a naive O (N 2) solution, is it possible to get better? Dec 14, 2024 · The “Subarray Sum Equals K” problem involves finding the total number of continuous subarrays in an array that sum up to a specific target value, K. Better than official and forum solutions. Ao utilizar nossos serviços, você está ciente dessa funcionalidade. Note: In case if we have two ways to form sum closest to zero, return the maximum sum among them. Do I have to seriously wait 7-10 days to actually secure the account… How legit does this sound to regular sellers (from a Galera, como usar o WhatsApp Web no PC sem o QR Code ou sem câmera? Meu celular quebrou e não liga mais. Follow their code on GitHub. Transaction went smoothly but this is clearly an abandoned account owned by someone who quit / got hacked months ago (maybe years). There are 2 sellers I want to buy from either hellenwong or CNLteam. Sep 3, 2021 · OWASP ZAP - intro I've figured out everything except question 5 - Exploit the vulnerability from the previous question with the Javascript `alert ('Hack3d')`. Para proteger su privacidad, por favor usar Salir y cerrar su navegador cuando haya terminado. [Naive Approach] - Using Nested Loops - O (n ^ 2) Time and O (1) Space The idea is to use nested loops to generate all possible subarrays and find the subarray with sum of its elements closest to k. Outlook Outlook Access your Outlook email account or create a new one easily. Dec 2, 2022 · 14 votes, 66 comments. I have reported to g2g for this. So to find the contiguous subarray whose absolute value is minimal, I suggest that you sort the partial sums and then find the two values which are closest together, and use the positions of these two partial sums in the original sequence to find the start and end of the sub-array with smallest absolute value. They both have good ratings but everything I see points to not trust the site. Can you solve this real interview question? Shortest Subarray with Sum at Least K - Given an integer array nums and an integer k, return the length of the shortest non-empty subarray of nums with a sum of at least k. Once you find the high-level vulnerability, try to… Olá, meu WhatsApp Web não gera o QR Code. Mar 18, 2024 · In this problem, we’re given an array of integers of size and a target number . Here's the prompt. Inicia sesión con tu cuenta. Also, it is recommended to go through from Subarray with given sum problem for better understanding. Alguém sabe como resolver? Using web proxies - Skills Assessment I completed the skills assessment for the "Using Web Proxies" module but I wasn't able to get the last answer on my own and I'm wanting to understand why. Any indices not picked in b are for a1. Nós usamos cookies e outras tecnologias semelhantes para melhorar a sua experiência em nossos serviços, personalizar publicidade e recomendar conteúdo de seu interesse. When finished, select Login. Input: arr[] = {1, 2 Can you solve this real interview question? Subarray Sum Equals K - Given an array of integers nums and an integer k, return the total number of subarrays whose sum equals to k. I believe in the Holy Spirit; the holy Christian Church, the communion of saints; the forgiveness of sins; the resurrection of the body; and the life everlasting. Shop mortgages. Overview The article provides a comprehensive guide on solving the "Subarray Sum Equals K" problem, highlighting the importance of efficient algorithms like Kadane's and prefix sums for identifying contiguous subarrays that sum to a given integer k. Agradecemos tu comprensión y paciencia. A subsequence is an array that Feb 3, 2019 · Then this question is similar to this one: Given an input array find all subarrays with given sum K Or, refer to this article: Subarray whose sum is closest to K Find subarray with given sum | Set 2 (Handles Negative Numbers) And, to go back to OP's question: Any indices picked in b are for a2. Explore these tips and tricks to start building quickly with your AI-pair programmer. mx . He is just ignoring me on the g2g chat since then. To count subarrays with sum k, we use a hash map to store the frequency of prefix sums. Conheça nosso Portal da Privacidade e veja o nosso novo Aviso. com provides comprehensive school and neighborhood information on homes for sale in your market. states, and missions in Canada, India, Africa, Nepal, and Myanmar. Version control is a way to save changes over time without overwriting previous versions. Ingresar su Número de Identificación de Usuario (ID) y su Número de Identificación Personal (NIP). com, comprueba el estado del servicio. GitHub has 528 repositories available. We define the K-Sum of the array as the kth largest subsequence sum that can be obtained (not necessarily distinct). A subarray is a contiguous non-empty sequence of elements within an array. If you're used to working with centralized version control systems, this is a big difference! Whether Get started, troubleshoot, and make the most of GitHub. We have two versions of this problem. A subarray is a contiguous part of an array. Your destination for all real estate listings and rental properties. 不推荐其他常见邮箱的理由 163,126等网易系的邮箱：广告多，还需要另外注册并管理帐户 Gmail：由于谷歌不愿意遵守中国的法规，导致无法直接访问。 其余国内邮箱，特别是本问题下很火的 知乎，中文互联网高质量的问答社区和创作者聚集的原创内容平台，于 2011 年 1 月正式上线，以「让人们更好的分享知识、经验和见解，找到自己的解答」为品牌使命。知乎凭借认真、专业、友善的社区氛围、独特的产品机制以及结构化和易获得的优质内容，聚集了中文互联网科技、商业、影视 Yahoo首页多年以来没有进行过大的变动，这次是梅姐上任七个月以来的一个大动作，其初衷是为了让用户能够更沉浸在yahoo网站上（也可能希望新首页新气象，提振Yahoo长久以来的颓势），主要从两个维度进行了redesign，视觉显示以及信息呈现。 图1 1. Resources to edify and grow in your knowledge of God’s Word. Notas: Tu contraseña de Hotmail o Outlook. Question is, what is the best way so solve second problem? Closest to a certain value t? Overview The article provides a comprehensive guide on solving the "Subarray Sum Equals K" problem, highlighting the importance of efficient algorithms like Kadane's and prefix sums for identifying contiguous subarrays that sum to a given integer k. " Drawn from God’s Word, the Lutheran Confessions are a true and binding exposition of Holy Scripture and serve as authoritative texts for all pastors, congregations and other rostered church workers of The Lutheran Church—Missouri Synod. We need to find a subset of numbers from the array that add up as close as possible to the target number , without exceeding it. Inicia sesión en Outlook con Microsoft 365 para acceder a tu correo electrónico, calendario y mucho más. e. Git is a distributed version control software. Oct 9, 2025 · Given an integer array arr [], find the sum of any two elements whose sum is closest to zero. Subarray Sum Equals K in Python, Java, C++ and more. Já dei uma mexida no código antigo, consegui fazer com que ele spammasse a mensagem que eu quisesse (dá pra alterar a mensagem que o script envia pra pessoa, btw), só que o zap web atualizou e o código quebrou, aí o cara atualizou o código mas não consegui mais repetir o feito 🥹 Nov 30, 2021 · Pentesters, what web vulnerability scanner do you use? Tried to make the title as concise as possible, so to put it more in context, we're a pentesting company that does pentesting for basically everything under the sun (though it is about 80% internal/external/web) but for web applications specifically, we get around ~100 contracts/year. GitHub Copilot works alongside you directly in your editor, suggesting whole lines or entire functions for you. If there is no such subarray, return -1. Example Input: arr[] = {1, 3, 7, 10}, K = 15 Output: 7 10 Explanation: The contiguous subarray [7, 10] shows a minimum deviation of 2 from 15. Jul 12, 2025 · Given an integer array arr [] of length N consisting of both positive and negative integers, the task is to find the number of sub-arrays with the absolute value of sum greater than a given positive number K. Sign in to your Outlook account to access emails, calendar, and more. We look here on one of the brightest pages of our history as a church. The Church of the Lutheran Confession's Adult and Children lessons Sep 25, 2025 · "The Church of the Lutheran Confession (CLC) considers itself to be the true spiritual descendant of the Evangelical Lutheran Synodical Conference, which was formed in 1872 and lasted until the early 1960s. I have delivered item to CNLTeam within the game and he just ran away with cancelling the order. Sign in to your Outlook account to access and manage your emails efficiently. You need to find a subarray of nums such that the absolute difference between k and the bitwise OR of the subarray elements is as small as possible. Conoce los distintos tipos de apoyos financieros que tenemos para continuar con tus estudios, seguir tus sueños y lograr tu Propósito de Vida. Does anyone know of any secure methods of buying gold in wow sod? AH maybe? Second account to wash the gold? Any advice helps ty! Share Sort by: Best 56 votes, 111 comments. It is strongly linked to the concept of sola scriptura —scripture alone, and its website states, "If it is not Scripture; it is not Lutheran. This algorithm ensures that we find the subarray whose sum is closest to zero in O(nlog2n) Jul 11, 2025 · The task is to check if there exists any subarray with K elements whose sum is equal to the given sum. Informamos ainda que atualizamos nosso Aviso de Privacidade. Eu abri o WhatsApp pelo meu PC e funcionou normalmente, mas agora ele fica buscando, não gera o QR Code e não aparece nada para scannear no celular Já mudei de browser e reinicie várias vezes, mas não consigo abrir. If any of the subarray with size K has the sum equal to the given sum then print YES otherwise print NO. How people build software. A subarray is a contiguous collection of elements in an array, making this problem a great application of iterative search techniques as well as more complex prefix sum algorithms. The red region shows a subarray of the original array. Jul 23, 2025 · So to check if there is a subarray with a sum equal to target, check for every index i, and sum up to that index as currSum. Which one has the best user experience for scanning authenticated apps? Find information on Christian elementary, high school, college and seminary options provided by congregations of the CLC. Nota: ID acepta mayúsculas y minúsculas. Understand with the Example: Nov 12, 2021 · Problem Statement Given an array a [], find the number of subarrays in it, which have a sum of k. Being distributed means that every developer working with a Git repository has a copy of that entire repository – every commit, every branch, every file. 第三方登录的网站和应用怎么办？ Yahoo邮箱停用后，最头疼的莫过于 用 yfinance 尝试拉取 yahoo 财经上的股票数据，谁曾想竟然出现了错误。 一番搜索后发现是因为大陆不能访问雅虎财经了，所以使用 yf. Prefix Sum Subarray Sum Equals K medium DESCRIPTION (credit Leetcode. Para determinar si su explorador web es compatible con JavaScript o para habilitar JavaScript, consulte la ayuda del explorador web. r] such that |k - (nums [l] OR nums [l + 1] Can you solve this real interview question? Subarray Sum Equals K - Given an array of integers nums and an integer k, return the total number of subarrays whose sum equals to k. Jul 25, 2022 · The Church of the Lutheran Confession (CLC) is a conservative Christian religious body theologically adhering to confessional Lutheran doctrine. Return the K-Sum of the array. Acceder a la liga https://miportal. download时需要添加代理访问。 Oct 10, 2022 · Want to purchase some in-game assets but never tried that site before. In other words, find the subarray whose absolute sum is closest to K. ¿No tienes cuenta? Please enter your User Identification Number (ID) and your Personal Identification Number (PIN). In other words, select a subarray nums [l. Click Here for Help with Login? Object MovedThis document may be found here ¿Olvidaste tu contraseña? ¿Necesitas ayuda? Contáctanos. You can also authenticate with Google or Apple - which are the supported social login providers when you create your account on GitHub. What are the chances of them taking the account Jan 19, 2023 · Is g2g safe to buy on? I wanna buy a game and g2g is selling it for pretty cheap. About your personal account on GitHub To get started with GitHub, you'll need to create a free personal account and verify your email address. What token do you receive? How does this work - does this needed to be appended to the URL? Any hints, suggestions? Não consigo reabrir a página do whatsapp web pois aparece uma página verde do whatsapp e não o espelho do outro whatsapp, alguém sabe informar? Jul 8, 2023 · SOLVED Run ZAP Scanner on the target above to identify directories and potential vulnerabilities. Nov 4, 2023 · I need to pick a web application scanner that supports scanning authenticated apps. For example: If nums = [1, 2, 3] and k = 3, the subarrays with sum equal to 3 are [1, 2] and [3], so The Subarray Sum Equals K problem involves finding the number of subarrays in a given array whose elements add up to a number K. com es la misma que la contraseña de tu cuenta de Microsoft. New comments cannot be posted and votes cannot be cast. Aquí nos gustaría mostrarte una descripción, pero el sitio web que estás mirando no lo permite. Isso não é uma trava, é só um script que envia o roteiro do filme do Shrek pra pessoa. Inicia sesión para obtener acceso a tu cuenta de correo de Outlook. Microsoft siempre controla cualquier actividad inusual de inicio de sesión 1 day ago · Manage expectations while you're away! Learn how to create an Outlook out-of-office message with our step-by-step guide. Descarga la aplicación o inicia sesión en línea para mejorar la organización y la productividad. I'm wondering if its safe to put my info n stuff onto and buy it? Archived post. Stay connected! Bilie Eilish，国内粉丝称她为“碧梨”。 这个一脸厌世的小姑娘虽然看着霸气侧漏，但却是个货真价实的00后，2001年12月出生的她，其实到现在还是个未成年。 小姑娘并不是混迹江湖多年的社会人，《bad guy》这首歌歌词看起来之所以那么诡异，是她是从电影里的大反派身上得到的灵感。她觉得这些 Billie终于找到了最适合她的路子 taypbuff 随便写写咯 8. The Confessions are the brightest jewel in the crown of the Lutheran Church. Log in to WhatsApp Web for simple, reliable and private messaging on your desktop. Intuitions, example walk through, and complexity analysis. To protect your privacy, please Exit and close your browser when you are finished. LeetCode solutions in any programming language The leading real estate marketplace. The seller also gave me the gmail account linked to the coc account and I changed the password/recovery email/ added 2FA. Estamos trabajando para restaurar el acceso habitual. ¿Olvidaste tu contraseña? ¿Necesitas ayuda? Contáctanos. nfqdc6zq0su1faqj7meoddv49fclisterf2qczdmohdpxflbm1