As we enter the final months of the year, the excitement levels go beyond the roofs. Whether it’s the excitement of the impending festival season or if you are a programmer, the excitement of the ACM ICPC season, it’s just tough to stay calm and normal during these few months. And finally, there’s excitement to bid adieu another year on a high. So, whatever it is that you are looking forward to and whatever it is that is keeping you excited, we are very happy for you. We are a sweet tooth, so we will be honest with you; we are more excited about the sweets than the festivals. So, whatever it is that you are celebrating in the coming few months, do share the sweetness with us. For now, we have the sweets from the recently concluded October Challenge 2016 for you, so let us share them with you.
First, let’s meet the chefs responsible for the sweets that you devoured during the contest, say hello to Alexey Zayakin, who also doubled as the problem tester for the contest, Dmytro Berezin, Maksym Bevza, Sergey Nagin & Vasia Antoniuk. A big round of applauds for our problem setters. Accompanying them on the problem setting bench were Sergey Kulik (Russian), Team VNOI (Vietnamese) & Hu Zecong (Mandarin) as translators, and of course, the contest admin Praveen Dhinwa. With all those gentlemen having enough contests setting experience under their belt, we knew we are in safe hands. And even though, there were minor queries and questions during the contest, overall we had smooth 10 days of programming action from 7th to 17th of October, 2016.
With problem setters ready with the problems and we ready with the platform, it was now up to you, the participants to come and get the party going. And that’s exactly what happened when the clock struck 3 pm IST on 7th of October. It took only 2 minutes for anta0 to crack CHEFKEY it was only the second submission into the contest, so it’s safe to say that we were off to a flyer. After that majority of the submissions into the contest were on CHEFKEY, making it easy for the participants to figure out the easy problem. Or so everyone thought. While everyone was busy trying to get past CHEFKEY, few wise men tried their hand on CHDOGS and found it rather easy as well. The first one to do so was eonx_32. And as the accuracy levels of both the problems suggest there wasn’t much of a difference in the two in terms of difficulty level.
As for the other problems, though, it wasn’t a walk in the part for many who tried them. Right from Fenwick Iterations to Tree Balancing, none of the remaining eight problems in the contest made life easy for the participants, resulting in scarcity of green ticks on the submission table. However, as always there were users who were enjoying the contest to the fullest. Among the ones who enjoyed the most were min_25, who seem to have developed a taste for long challenges as he has only participated in them. We wonder how he will fare in the Cook-Off’s. What do you think; will he be able to deliver the same performance? Accompanying him on the rank table were few new names, including the likes of ccz181078, dukkha, dario2994, and philipsweng. It is worth mentioning that it was the debut contest for ccz181078 and dukkha. And going by the debut, we can only expect some incredible performances from them in near future. Just like that, there were many intriguing names adorning the rank tables, so let’s take a walk down the rank table and meet all of them. Shall we?
Let’s start with the ladies:
Now, the men, we start with top 10 ROW:
The Indian top 20:
And now the little wonders from schools -
First the ROW top 5:
The Indian top 5:
Now, the top scorers (outside our winners) for our Challenge problem SEAARI:
We start with the ROW:
Now, the Indian top 3:
A huge round of applauds for all our winners!
After the contest, everyone flocks for the editorials. However, lately there has been some delay in serving them. And we apologize for that. We would try and serve them as soon as the contest is over. So, while we prepare and garnish the remaining editorials, you go and enjoy the ones that are piping hot.
That will be all from everyone here at CodeChef. We will see you at the October Cook-Off 2016. We hope you are ready for and action packed Sunday night.
If you have any doubts, questions, or feedback regarding the October Challenge 2016 or any aspect of it, feel free to send write to us at firstname.lastname@example.org.
See you at the contests.
After two big contests in September Challenge & Cook-Off, the wait for September LunchTime 2016 seemed like eons. You already know how eager we get when it comes to our LunchTime contests. After all, who wouldn’t want to see the young programmers from schools battling it out on a fine Saturday evening? To notch that all up a bit, we had the registrations going on for the upcoming ACM ICPC 2016 – 2017 India regionals, which meant the competition was already on among the aspiring teams to better each other. It just gave us one more reason to look forward to LunchTime. So, we cleared our Saturday evening calendar and kept it all for September LunchTime 2016.
The problem set for the contest came from Misha Chorniy and was tested by Sergey Kulik, accompanying them on the problem setting panel were Pawel Kacprzak, Praveen Dhinwa, Team VNOI, and Hu Zecong, all donning different roles. For every contest we expect a nicely balanced problem set, however, this time around the problems were on exact opposite ends of the difficulty level. While the easiest of them all Chef and Inequality saw over 900 successful submissions, Chef and Words, which turned to be hardest among the four, saw only 8 submissions. Even the situation for the remaining two was pretty identical with 19 and 9 submissions for Chef and Tree and Chef and Triangles respectively.
On the rank table though, the battle was as fierce as ever. And even the start of the contest was pretty good with plenty of ACs in the first half an hour. Most of them though, were on Chef and Inequality, but that is normal and we have seen in many of our contests where most of the submissions in the early stages of the contest come on one single problem only. The first one to taste the sweet nectar of AC was anta0 and it took him only a minute to get that. Soon to follow him were zscoder, nuip, vladik, iman_gh and many others with their ACs on Chef and Inequality. In the first 5 participants to have received an AC, we had two from schools. So, with that, the battle among the school students was on. No, Indian school student was able to make an appearance in the first 50 submissions into the contest. And that was a tad surprising.
While the absence of Indian school students was a bit surprising, the battle between zscoder, kmcode, and austin990301 made up for that. None of the three however, were able to crack all four problems and that affirmed the tough nature of the problems. And to find out who emerged victorious after battling with the problems till the very end, let us take you to the rank table of our September Challenge 2016.
We start with the ROW top 10:
And now the Indian top 10:
Congratulations to you all on your blistering performance and to everyone who took part in the contest.
Now, we move towards the editorials for the contest and considering the difficult nature of the contest, we presume you all would be eager to munch on them if you have not already. So, let us take you straight to them.
And with that, we are done with all our pending blog posts. We hope you enjoyed them all, even though they were a tad behind their scheduled. We are working on your punctuality and will try and publish all the future posts in a reasonable time, after the contest. So, while we work on our punctuality, you join the ongoing October Challenge 2016 and give your ACM ICPC 2016 – 2017 preparations the final touches.
If you have any queries, concerns, or questions you can always write to us at: email@example.com
Till next time, adios.
See you at the contests.
We were coming from “the” biggest long challenge we’ve ever had. We were excited and pumped by the fact that, this is the first of the two Mega Cook-Offs we will be hosting for the aspiring ACM ICPC 2017 aspirants. All that made up for a rather exciting backdrop for our September Cook-Off 2016 and we were excited to join in the contest. And we are sure you were too. This was all before 9:30 pm IST on September 18th, 2016. When the contest bell rang, there was absolute silence and a sense of urgency among everyone, the participants, the problem setters, and everyone here at CodeChef.
The participants wanted to put every step in the right direction, while the problem setters wanted to see them fight with their problem set, and for us, well, we were just excited to some of the top programming brains battle it out. Not to mention, the fight among the Indian ACM ICPC aspirants to finish in top 50 and be eligible for their ACM ICPC travel reimbursed. So, pretty much everyone joining the contest had an agenda. Of course, it is there in every contest; however, the word “Mega” added a pinch of spice to the overall action. So, let us see how it went for everyone.
Let us start with the problem setters, our setter & editorialist for the contest was Tuấn Anh Trần Đặng, who was accompanied by Kamil Dębowski as the tester and Praveen Dhinwa as the admin for the contest. All those gentlemen have enough experience to understand the requirement of a mega cook-off and they had cooked a nicely balanced and testing problem set for the contest. The different flavors of Vietnamese, Mandarin, and Russian for the problem set came from Team VNOI, Hu Zecong, and Vasya Antoniuk respectively. With the problem setting panel confident and ready to see the fate of their problems, it was up to us to make sure that the contest gets a smooth start. And it got what it deserved, a smooth start with no issues what so ever. It was a small victory, but looking back at some of the disastrous mega cook-offs we have had, we were rather happy with it.
As the contest started, everyone quickly moved to the submissions page to see how the participants were faring against the problems. And viola, what a start it was, we got our first AC on TALAZY. It took only two minutes for lebron to crack it, but he was not alone in doing so. In a matter of second’s dreamoon4, rajat1603, and kefaa joined him with the same problem to their name. As the clock ticked, the number of submissions on TALAZY kept on mounting. And soon, it became apparent that, TALAZY is your gateway to your first AC in the contest. Among the first 200 or more submissions that we got, there were only 3 on TACNTSTR and sadly, they were all WAs. So, if there ever was any hint for the participants joining in the contest for where to start, we guess this was it. And it remained like that for quite some time. But every now and then there will be someone trying their hand on other problems too. Some succeeded straightway, some succeeded after a couple of tries.
In the end, though, we had all the five problems solved with Lazy Jem getting a maximum of 2137 successful submissions while Shortest path queries, turned to be the most troubling one with only 8 successful submissions. And now, let us take you through the rank table to meet our winners.
First ROW top 10:
Now, the Indian top 10:
A big round of applauds for all our winners. We hope you all enjoyed the contest as much as we did setting it up for you.
As for the participant’s eligible for their travel reimbursement for the impending ACM ICPC 2016 – 2017 India regionals, we will be contacting them all separately. Till then keep coding and sharpening your preparation for the regionals.
Let us now, take you to the editorials for the contest. We are sure you would have gone through them all by now, however, if you have not, here they are for you:
They will help you get ready for the busy programming season ahead. And we are sure you would enjoy them.
With that, we arrive at the final segment of the post. We hope you are having a wonderful programming season, with plenty of contests to look forward to. We too have few lined up for you in October, so in anticipation of an exciting October ahead of us, we will put a full stop on this tale of the first mega cook-off of the year 2016 and will see you soon, with yet another exciting tale.
If you have any queries or concerns, you can always write to us at: firstname.lastname@example.org
See you at the contests.