November brings out a gamut of emotions in all of us. While some are happy, for it takes them one step closer to the end of the year, some are sad, for it marks the end of the festive season and takes them back to schools/colleges/work. Whichever of the two aforementioned brackets you belong to, we are with you, so let us get on with November. And why not, not much has changed from October to November. Yes, the temperature has dropped down a few degrees, but the colorful decorations are still on, and you can already see the kids gearing up for Christmas. So, keeping up the festive spirits high, let’s set ourselves up for the final two months of 2016, starting off with November Challenge 2016.
With the temperatures constantly going down, our November Challenge 2016 brought the action indoors for the programming enthusiasts with its problems. On the problem setting panel we had Alexey Ruben, Ke Bi, Vadym Prokopec, Lalit Kundu, Maksym Bevza, Andrii Omelianenko, Roman Kachur, Sergey Nagin, Sergey Kulik, Hasan Jadah, Hu Zecong, Team VNOI & Praveen Dhinwa. Now, keeping the holiday hangover in mind, our problem setters had created the problem set light enough for everyone to have fun, and tough enough to get them ready for the final stages of 2016. So, let’s see how the participants fared in the contest.
Now, whether you are a seasoned campaigner or a rookie just coming through ranks, it’s never easy to hit the ground running after a prolonged holiday season. So, it wasn’t easy for the early joiners of the contest to get it right either. After a long time we were seeing the dreaded red cross of WA dominate the green tick of happiness, especially in the early stages of the contest. Call it the post holiday slack or the well disguised problem set, inside the first half an hour of the contest we had submissions on four of the ten problems into the contest. And not many of them were accepted. However, as the time went on, we started seeing more green ticks and lesser red crosses.
antoniuk1, among all the early joiners of the contest had the best start bagging CHSQR and CPERM with two ACs of his first three submissions. He was soon, overtaken by anta0, who got the same two problems in two straight ACs. But his lead did not last long, as antoniuk1 struck back with an AC on GIFTCHEF. With the scarcity of green ticks on the rank table, it was the fight between these two that gave the contest an exciting start. And unaware of what was to follow, we enjoyed this early battle to the fullest.
The scene on the second day of the contest was pretty much the same, except for the difference that ceilks had announced his arrival with a barrage of submissions on the challenge problem SEAWCU. Now, when someone goes straight after the big fish, you are bound to question their intent. However, this time around ceilks had made it pretty clear, and who are we to question his intentions. One after another, the ACs started following and before we could react, he already had solved 7 and was closing in on the eighth. And he was in no hurry to finish the contest either. He took his sweet time to play around with the problems before bagging them. acyume though, did seem to be in a hurry, or at least that is what we inferred after he solved 5 problems in 5 straight submissions. He was finally stopped by KIRMEME, which eventually became his 6th, but not before keeping him busy for quite a good amount of time. After seeing these performances, we got the feeling that, one of them very well could take home the November Challenge 2016, unless we have a surprise rise. And eventually there were no surprises and ceilks was crowned the winner of November Challenge 2016 with a score of perfect 1000.
A big round of applauds for him. Now, let’s meet his counterparts at various positions on the rank table:
We start with the top 10 participants from ROW:
Now, the Indian top 20:
Now, we move on to the special achievers category. Let’s start with our little wonders from schools:
Top 5 School kids from ROW:
Top 5 School kids from India:
Now, the top challenge problems solvers other than the winners.
We start with the top 3 solvers from ROW:
We start with the top 3 solvers from India:
Big congratulations to all you wonderful people for making the November Challenge 2016 a success.
And now, the final stats from the contest:
We hope each one of you who joined the contest enjoyed it as much as we did, putting it up for you.
It’s editorial time now. If you have not gone through them, here they are for you.
That will be all from November Challenge 2016. We hope you enjoyed the post as much as you enjoyed the contest. If you have any specific event or performance that amazed you during the contest kindly do let us know. You can shoot an email to email@example.com or reach us through our social media streams. We love hearing from you guys so keep writing to us.
Till next time, adios.
See you at the contests.
Set in the colorful and glittery backdrop of Diwali, the October LunchTime 2016 had a rather joyous feel to it. The sweetness of the festive season had taken over and you could see everyone embrace it. Draped in our traditional attires, on the eve of Diwali, we sat down for one final contest of October, before the fireworks of Diwali. Joining us for the contest was our problem setting panel featuring Sergey Kulik, Misha Chorniy, Praveen Dhinwa, Pawel Kacprzak, Hu Zecong, and VNOI Team. Now, knowing that it was Diwali eve, we were keeping our expectations modest regarding the participation numbers for the contest, however, our excitement about the action into the contest was at par with any other contest we have had in the past. So, with that in mind and plenty of sweets on the table, we sat for the October LunchTime 2016. And here’s how it went.
The contest opened to a barrage of submissions on BOUQUET right from the very first minute of the contest, by lebron. Soon to follow him was lg5293, both of them accounted for 7 out of the first 10 submissions in the first 5 minutes of the contest. And it made up for the cracking start of the contest that we hoped for. The colorful symbols for different result codes were giving the colorful festive decoration that you see almost everywhere this time of the year. Now, we know not many with the red cross against their submission would have appreciated it as much as we did, but their determination to change it into green tick was something to cheer for.
After BOUQUET, the road to glory seemed a tad tougher for most of the participants and even though lebron had solved FFCOMB partially in the first 10 minute of the contest, it took him well over an hour to fully solve it. For kefaa though, it was a totally different story. It took him only a couple of minutes to completely solve FFCOMB. And with two fully solved problems to his name, kefaa looked set to take LTIME41 home. Closest to kefaa, was hloya_ygrt on the rank table, and even though he had a tough time battling with FFCOMB, he eventually got it right in his 13th attempt. Strange number to get something right, isn’t it? But, it didn’t seem to bother him as he quickly moved on to RESTPERM. And all the time he lost in battling with the previous problem was made up this time, as it took him only 3 minutes to crack it. kefaa, on the other hand got it right in the very first attempt and with that stamped his authority over the October LunchTime 2016. With less than half an hour to go, the picture of the top of the table became pretty clear. Unless there was any last minute surprise, we knew who is taking home the October LunchTime 2016.
And if you have not met them already, let us introduce you to the winners of our LTIME41:
We start with ROW top 10 school students:
Now, the Indian top 10 school student:
Congratulations everyone, we hope you enjoyed the contest and had a blast in it.
Here are the final stats for the contest:
Now, for the editorials, let us take a walk to the discussion forum, where they are:
We are sure you would have enjoyed the editorials as much as the contest.
Now, it’s time to get away from October LunchTime 2016 and move towards the November contests. We are already approaching towards December, so, we will be quick with the November contest posts and will serve them soon. And while we do that, you let us know your thoughts, suggestions, or feedback on any aspect of CodeChef you would like to talk. You know where to find us.
That will be all for now.
See you at the contests.
There still was a week to go for Diwali, but the celebrations had already begun here at CodeChef headquarters. And rightfully so, after all, we were hosting ACM-ICPC India Regionals, Online Preliminary Round 2016 on Saturday, 22nd October, 2016, followed by the October Mega Cook-Off 2016 on Sunday, 23rd October, 2016. We were thrilled, and if truth be told, a tad nervous too. Both of the contests had huge significance for different reasons and we wanted to get it right. So, with jittery eyes and a lot of butterflies in our stomach, we welcomed perhaps the most action-packed weekend of the year for us. And we could not be happier to say that, it just made our festive season even sweeter. You know it; you were there, weren’t you?
While, the ACM-ICPC India Regionals, Online Preliminary Round 2016 was an exciting tale on its own, we are here to tell you the story of October Mega Cook-Off 2016, which was pretty interesting on its own. Set by Lalit Kundu & tested by Kamil Debowski, the October Mega Cook-Off 2016 had a perfect blend of festive sweetness & thrill, which seemed to be the flavor of the season. The problem set based on the adventures of Serlock Holmes& Dr. Watson made them even more intriguing. And as the contest started, he participants grabbed their detective hats and were ready for the adventure.
The first mystery the users cracked was “Watson asks Does Permutation Exist”, which didn’t trouble the users much and was solved under 2 mins by rohanrtiwari. Rohan was then followed by many others and except for a couple of instances, most of them got it right in the first attempt only. And with that our COOK75 was off to a smooth start. While Watson asks Does Permutation Exist, was everyone’s first choice, because of the constantly increased AC submissions on it, we also had few submissions here and there on problems BOOKCHEF, UGLYF, COUNTWAY, and SWINDOW too, however, not many of them were AC though. And slowly it became even clearer that these problems are going to decide the fate and the winner of the contest. So, we waited and watched.
On the rank table, it was a Japanese domination with anta0, natsugiri, and uwi occupying 3 of the top 5 slots. And while we had the feeling that one of these three will take home the COOK75, we could not write off the likes of chemthan, biginnnner, and sumeet_varma before the contest ended. It all made the final minutes of the contest even more interesting. And to tell you the final outcome of the contest and to announce the winners, let us take you to the rank table:
We start with the ROW top 10:
Now, the Indian top 10:
A big round of applause for all our winners and for everyone who joined in the contest! We hope you enjoyed the contest and had a wonderful Diwali.
Now, for the final segment of the post, let us take you to the editorials for the October Cook-Off 2016. Penned by the problem setter, Lalit himself these editorials will give you the exact approach that the problem setter would have applied towards each of the problems. Even if you have gone through them, it would be good to have a look at them once more. So, here they are for you:
And with that, it’s time to say farewell. As the winter takes over, it’s time to wrap yourself in your cozy blanket, grab your cuppa hot coffee, and enjoy some sizzling programming contest. So, you take care of the former two and we take care of the final one.
Till next time, adios.
See you at the contest.