Subscribe to the channel for Amazing Coding and Competitive Programming Content.Romantic Reversals Code: https://www.codechef.com/viewsolution/55412445Join Whatsapp Group: https://chat.whatsapp.com/DcnucLiQlEaFfhdb1TIvLpJoin Discord: https://discord.gg/GbefhExv Join Telegram for Post Contest Discussions, Coding Meets, Important Updates, Join Community of over 1000+ Coders: https://t.me/codenavdiscussFollow Codenav on Instagram: https://instagram.com/code.navJoin My Telegram Channel For Daily Coding Content And Study Resources: https://t.me/codenavWebsite- https://abhinavawasthi.code.blogLinkTree- https://linktr.ee/abhinavawasthiMy LinkedIn- https://www.linkedin.com/in/abhinavawasthi01My Instagram- https://www.instagram.com/iammabhinavMy Facebook- https://www.facebook.com/awasthi.abhinav.3My Twitter- https://twitter.com/call_me_abhinavCoding Blogs- https://abhinavawasthi.code.blog/ The name of the problem is Chef and Vacation Transportation and it's problem code is. } Let $$$Q$$$ be sorted set of indices $$$ [ Q_1, Q_2, Q_3 \ldots Q_m ] $$$ such that $$$A[1 \ldots Q_i]$$$ contains all the elements from $$$1$$$ to $$$Q_i$$$. Waiting for Colleges that stole the spotlight in december lunchtime blog! Invitation to CodeChef May Lunchtime 2021. The next 3 spots were an all-Indian deal as participants pulkit_0110, akash_pro, and mukulravi003 clinched places 3 through 5. This LunchTime [] By Ashishgup, 17 months ago, We invite you to participate in CodeChef's May Lunchtime, this Monday, 31st May, from 8 PM 11 PM IST. what is a string called in c++. how to do NOL_LESS? This contest around, even Division Three was tasked with 6 problems to solve. The CodeChef June LunchTime 2021 concluded last Saturday, and it was a contest that pushed every coder to the edge. We invite you to participate in CodeChefs December Lunchtime, this Saturday, 25th December, rated for all. Coder redstar05 was crowned the winner in Division Two, and he has successfully managed to switch stars from 4 to 5 post the contest. We can solve this question in any language like C, C++, Java or Python but in this article we will be solving it with C. If you know multiple languages then try to apply the same logic with others also. DECEMBER LUNCHTIME 2021, leaked solution of codecef, leaked codecefGet solution say hi in this grouphttps://t.me/joinchat/W02oYMrfMOtiNWU1For solution telegr. :P. the greedy solution: go to the largest B. once B = A + k, it'll be that all the way. This LunchTime, the pros of Division One were given six problems to solve to get to that number one spot. This is the official video editorial of CodeChef December Lunchtime 2021.Problem: Optimal Sorting (OPTSORT)Educator: Adhish KancharlaProblem Link: https://ww. x = list(map(int,input().split())) The name of the problem is Maximum Trio and it's problem code isMXMTRIO. All these pros give us one heck of a show, and we cant wait for them to come back and dazzle us in 2022! The number of ACs are not a good estimate today, the 4th problem (interactive one) was also easier for its position. On the second day, chef has 10 questions waiting to be answered (5 received on the second day and 5 unanswered questions from day 1).Chef answers 5 of these questions and leaves the remaining 5 for the future.. "/> Out of the six the most popular problem here was easily Romantic Reversals with its 270 successful submissions and 90.6 percent accuracy rate. Good Luck! There are two types of routes he can take: For each test case, if Chef takes the train output TRAIN, if Chef takes the plane and the bus output PLANEBUS, if both are equal output EQUAL. You are given an array A of N elements. n = int(input()) My Solution which is supposed to give TLE on large test cases, passed. spycheese was the first coder to crack the code and only 7 others mirrored the feat. Croatian Open Competition in Informatics (COCI) 2022/2023 Round #1, CSES Sorting and Searching section editorials, Teams going to ICPC WF 2021 (Dhaka 2022) WIP List, ICPC 2022 Online Challenge powered by HUAWEI: Results. are there prizes in this contest (for top 100 div-1 participants) ? for DSA Certification. CodeYT - The Programming and Tech Blog Learn to Code from here with Lots of Assignments and Projects. int X,Y,Z; The name of the problem is Maximum Trio and it's problem code is MXMTRIO. fname from FString. Get all the information about the multiple coding challenges hosted Read on for the exciting details of the contest! Do the operation. Round-Up of The 2020 CodeChef LunchTimes. if(sum>Z){ We can solve this question in any language like C, C++, Java or Python but in this article we will be solving it with Python. int sum = X+Y; However, despite their admirable skill, not everything came so easily to the pros of Division One. Activities like this take down the credibility of ratings . Until next time, this is CodeChef co-respondent Riddhi Acharya . Share this article with your friends and on social media handles so that more and more coders can take advantage of this. } } We can't choose two subarrays that are intersecting for optimal solution. I also passed the same, but it isn't n*sqrt(n)logn fully. CodeChef - A Platform for Aspiring Programmers. Hope to see you participating. This account and This have rankings 200 and 201 and their codes are exact same for all problems . Explanation: Test Case 1. Also, if you have some original and engaging problem ideas, and youre interested in them being used in CodeChef's contests, you can share them here. The fifth rank went to Indian coder ritik_m, who gained 222 points in the contest and switched stars from 2 to 4! Fifth place was claimed by Indian participant chefback. We can solve this question in any language like C, C++, Java or Python but in this article we will be solving it with Python. In this stream, I'll explain the solutions to whichever problems from this month's CodeChef Lunchtime I solve. Take a flight from his college to ChefArina which takes. CodeYT - The Programming and Tech Blog Learn to Code from here with Lots of Assignments and Projects. The competition started Were done with all of 2021s Cook-Offs, and were taking a look back to see what the competitions brought. December Lunchtime 2021. Optimal Sorting was another problem that received a lot of attention here as it saw nearly 250 correct answers. Hello everyone, in this article we will be solving an interesting problem from CodeChef December Lunchtime 2021. . This weekend's LunchTime seemed like a fitting way to end the month. If you were there at this LunchTime, but couldnt work out one of the tougher problems, our video editorials are here to help! int main(){ This is basically like performing the intersection between \ (A\) and \ (B\).. Then, since we have to change one element in \ (B\) in any case: if the intersection is just \ (A\), we return A.size - 1; otherwise, we return inters.size + 1. CodeChef is happy to announce Codenation Innovation Labs (CNIL) as a recruiter for February Lunchtime 2021. Joining us on the problem setting panel are: We're done with the December LunchTime, which means that all of 2021's rated-for-all . Subscribe to get notifications about our new editorials. Not far behind them was Japanese 7-star coder noimi. Looking at the number of submissions I still feel it was balanced maybe could have been better with the 5th problem getting ~15 ACs and the last one ~5. printf("TRAIN\n"); We can solve this question in any language like C, C++, Java or Python but in this article we will be solving it with C. Hello everyone, in this article we will be solving an interesting problem from CodeChef December Lunchtime 2021. We absolutely enjoyed the contest, and we hope you did too. There will be 7 problems in Division 3 and 6 problems in Division 2/1. Feels great to fully solve more that 1/2 problems for a change. else{ Note: Two ordered triplets (a, b, c) and (d, e, f) are only equal when a=d and b=e and c=f. while(t--){ How do you solve Div. 2 min read. The most loved of the lot here was Maximum Trio with nearly 3.7k correct answers. for x in range(t): We can solve this question in any language like C, C++, Java or Python but in this article we will be solving it with Python. My n*sqrt*log solution with fft passes in 0.69/2seconds. CodeChef was created as a platform to help programmers make it big in the world of algorithms, computer programming, and programming contests.At CodeChef we work hard to revive the geek in you by hosting a programming contest at the start of the month and two smaller programming challenges at the middle and end of the month. The Colleges That Stole The Spotlight In The December Long Challenge! (correct:61, greedy:62), We didn't come up with such a solution and it takes too many tests to cut off such stuff (, Okey, I don't understand how it could go, because I cut off such a solution explicitly, for ~1900k :/, This provably works for N < K, because you just spend all your time squaring anyways, which the greedy does. Vacations have arrived and Chef wants to go to his home in ChefLand. The toughest problems for the coders here were In-tree-active Node Coloring and Point constraint. neelamharsh55 was the best performer of the college as he clinched the 87th position in Division Three. While pulkit_0110 and mukulravi003 used the competition to jump stars from 4 to 5, akash_pro started this contest as a 3-star player and ended it as a 4-star one. Bus stop codechef solution. CodeChef - A Platform for Aspiring Programmers. But I hope you have a solution with adequate complexity. Important Links of our resources & information -, Prepare Time: 8:00 PM 11:00 PM IST. So, without wasting any more time, let's start with the problem. Thank you. Thanks to . else if (sum Why I am getting runtime error again and again while same code is working fine in my code editor? Our victor for Division Three was mjytxdy. This Lunchtime has a replay of some of the problems used in IOITC Day 1/2 (Final Selection round of Indian IOI Team). CodeChef was created as a platform to help programmers make it big in the world of algorithms, computer programming, and programming contests.At CodeChef we work hard to revive the geek in you by hosting a programming contest at the start of the month and two smaller programming challenges at the middle and end of the month. By mhq, history, 9 months ago, This time contest admin is newbie, so it will be a little bit easier than usual :) We invite you to participate in CodeChef's December Lunchtime, this Saturday, 25th December, rated for all. } Throughout the competition the only problem that seemed to have the Division Three coders stumped was Sleep Technique. This time contest admin is newbie, so it will be a little bit easier than usual :). Understood, the community thinks otherwise. Nearly 7000 players solved Chef and Vacation Transportation, while 4000 players cracked the code to Chef Loved 1010. no match for 'operator=' (operand types are 'std . Here's a little recap to help you relive the competition! Customer Service. Contest to begin in less than 15 minutes. Customers can speak with a manager at their local restaurant if they have a problem. We had a problem-set that drew in hundreds of players and ranklists were an absolute riot as always. Lovely Professional University - The college with the 4th highest number of participants was Lovely Professional University. While 5 players got through In-tree-active Node Coloring, no one quite got the hang of Point constraint. The video editorials of the problems will be available on our YouTube channel as soon as the contest ends. Thanks for the wonderful contest. Even the players of Division Two took a fancy to Romantic Reversals as over here it got 3,100+ successful submissions and a 44.86 percent accuracy rate. CodeChef - A Platform for Aspiring Programmers. As the competition [] The first line of the input contains a single integer N.The ith line in the next N lines contains the A i. convert char to string c++. I hope Codechef continues it. Well coders, that was our recap of the February LunchTime 2021. Russian coders dominated the the top 5 of Division One as spycheese and vercingetorix claimed places one and two respectively. For each test case, output the maximum value among all different ordered triplets. All four players gave stunning performances and managed to level-up to 3-star coders post the competition. I guess the test cases for OPTSORT are weak. I don't know she is wasting her time to gain fake Ratings . The name of the problem is Chef and Vacation Transportation and it's problem code is CHEFTRANS . You may print each character of the string in uppercase or lowercase (for example, the strings train, tRAiN, TrAin, and TRAIN will all be treated as identical). Request : Update Ratings only after plag check CodeChef_admin for all divisions . We're done with the December LunchTime, which means that all of 2021's rated-for-all competitions are over. The second line of each test case contains N space-separated integers. So, without wasting any more time, let's start with the problem. return 0; We invite you to participate in CodeChef's CodeChef's February Lunchtime on 27th February from 7:30 PM 10:30 PM IST. Spent around 2 hours on solving it! chefback was on fleek throughout the contest, and credit to this was able to switch stars from 1 to 3. You need to find the maximum value among all possible ordered triplets. 162 players entered the July LunchTime from LPU, and we saw a total of over 1,100 submissions from them. On the first day, chef answers 5 questions and leaves the remaining 5 (out of the 10) for the future days. Fourth position went to ecnerwala, while ksun48 occupied the number five spot. Hello everyone, in this article we will be solving an interesting problem from CodeChef December Lunchtime 2021. A Problem-Set That None Could Resist! { I may not have time to look at the Div. It really ruins competion spirit, "Sleep Technique" looks like combining 2 very standard problems.I wonder how it got approved by CodeChef admin, The only programming contests Web 2.0 platform, How can I think of the solution of arc137C, Editorial for Codeforces Round #748 (Div.3), who is going to participate to INNOPOLIS University Open olympiad. So, without wasting any more time, let's start with the problem. Sum of N over all test cases won't exceed 3.10^5, t = int(input()) If you know multiple languages then try to apply the same logic with others also. January 8, 2021 1 min read. Subscribe to the channel for Amazing Coding and Competitive Programming Content.Romantic Reversals Code: https://www.codechef.com/viewsolution/55412445Join W. Ak. You will be given a total of 8 problems (6 in Div2, 6 in Div1) to solve in a duration of 3 hours.. The 2020 September LunchTime concluded this weekend, and it's time for a quick little recap, in case you are eager to read more such blogs, head on over here.The competition started at 8 pm last Saturday instead of our traditional 7:30 pm IST. Then, it is optimal to choose indices of subarrays as $$$[(1 \ldots Q_1), (Q_1+1 \ldots Q_2), (Q_2+1 \ldots Q_3), \ldots ]$$$. How do I understand how many loops can I use when time limits are 1 second and 2 seconds?? Its been an epic competition and all we can do now is hope that 2022 comes equipped with equally brilliant contests. 2 and. It will always give you minimum no matter what is the order of array, Is there any prizes for top 200 div3 rankers. ), Some of them are pretty interesting and require a few steps beyond K, like, No one has sent a normal solution for last problems behind O(k^2loglog) :/. Hello everyone, in this article we will be solving an interesting problem from CodeChef December Lunchtime 2021. We can solve this question in any language like C, C++, Java or Python but in this article we will be solving it with C. If you know multiple languages then try to apply the same logic with others also. Specials may include $5 take-home entrees, $7.99 lunch favorites and Buy One Take One offers. I hope you liked the question and the solution of the above problem. The complexity is bounded by $$$\displaystyle \sum_{k=1}^{\sqrt{n}} k \log n + \sum_{k=1}^{\sqrt n} \dfrac{n}{k}\log n$$$. 1 C? printf("PLANEBUS\n"); 0. will pass the test, but 5340 93 can hack this solution. While theres plenty to reminisce about for the entire year, for now lets just go back a couple of days and relive the thrilling ordeal that was the December LunchTime! entering char in int c++ avoid loop. (The number after BAD is K, the top path is the greedy, the bottom path is optimal. A Problem-Set Designed To Amaze! Practice in the CodeChef monthly coding contests, and master competitive programming. I don't know why the problem "Optimal Sorting" turned out to be very hard for me to figure out. It starts at 9:30pm instead of the usual 7:30pm. With Gennady Korotkovich triumphing over Kevin Sun in a close battle and some well-known names of CP making it to CodeChef, we all got to witness 3 hours of intense coding. While there's plenty to reminisce about for the entire year, for now let's just go back a couple of days and relive the thrilling ordeal that was the December LunchTime! I agree with you on the difficulty. Third position was taken up by x_arc, and fourth place went to asdsasd. 2022 January Long Challenge II | Endless Ties. Get rid of those includes c++. If it is not, we can convert it into permutation by replacing $$$A_i$$$ with $$$P_i$$$ where $$$P_i$$$ is its index in stable sorted array version. int t; The most popular problem out of the lot was Alice vs. Bob Faceoff. Were done with the December LunchTime, which means that all of 2021s rated-for-all competitions are over. Online IDE I've only got solution for A=1, but I guess that gives no hints. I guess it's around nlog^2n or maybe even lesser. Problems Chef and Vacation Transportation and Chef Loves 1010. posed no challenge to the budding coders here. Hello everyone, in this article we will be solving an interesting problem from CodeChef December Lunchtime 2021. If you know multiple languages then try to apply the same logic with others also. The first line of the input contains a single integer, The first line of each test case contains an integer. }. Thats all the happenings of the competition. Hello everyone, in this article we will be solving an interesting problem from CodeChef December Lunchtime 2021. As the competition commenced, the Division One players were handed out 6 problems. November 30, 2020 3 min read. 2020 was unusual, to say the least, and amid the pandemic, the LunchTime contests were something we could count on to keep us busy. Solutions. print((x[-1]-x[0])*x[-2]). The problem saw nearly 230 successful submissions and a 31.41 percent accuracy rate. Special Problems For Coders With No DSA Knowledge? We invite you to participate in CodeChef's December Lunchtime, this Saturday, 26th December, from 9:30 pm to 12:30 am IST. The first sum is $$$ O(n\log n)$$$ and the second one is $$$nH_{\sqrt{n}}\log n= O(n\log^2 n)$$$ where $$$H_k$$$ are harmonic numbers. Read your comment on Codechef as well and yes maybe the 5th problem was a bit too easy for D1 E but one problem being slightly easier shouldn't be too much I guess. C++ programming tutorial for beginners - part 1. After a lot of efforts, merely 3 players were able to walk away with a green tick for the problem. This post is only for educational and learning purposes. So, without wasting any more time, let's start with the problem. CodeChef was created as a platform to help programmers make it big in the world of algorithms, computer programming, and programming contests.At CodeChef we work hard to revive the geek in you by hosting a programming contest at the start of the month and two smaller programming challenges at the middle and end of the month. Nice balanced contest for div-1. The name of the problem is Maximum Trio and it's problem code is. Hope She becomes expert by next round and stop competing . 2021 December LunchTime | Ending The Year In Style! The name of the problem is Chef and Vacation Transportation and it's problem code isCHEFTRANS. WLOG assume array is a permutation. December 27, 2021 . Note the change in date and time. Next up was player shiomusubi496, who gained 208 points in the competition and is now a 4-star player. Take a direct train from his college to ChefLand which takes Z minutes. Home Practice Lunchtime Submissions SUBMISSIONS FOR LTIME Language C++17 C++14 PYTH 3 C JAVA PYPY3 PYTH C# NODEJS GO JS TEXT PHP KTLN RUBY rust PYPY PAS fpc HASK SCALA swift PERL SQLQ D LUA BASH LISP sbcl ADA R TCL SQL PRLG FORT PAS gpc F# SCM qobi CLPS NICE CLOJ PERL6 CAML SCM chicken ICON ICK ST WSPC NEM LISP clisp COB ERL BF ASM .