Lunchtime Diary, Entry Number 32 – The January Lunchtime

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January 2016 came along in it’s usual sinister fashion, brutally ending winter break and the joyous fervour that comes with it. New Year’s resolutions were made and a promise to keep them hangs like a sword over everyone’s heads. If you haven’t made a resolution yet, we have one in mind for you. To our young coders, we suggest you resolve to code often, code well and take on competitive programming with fullest dedication. We will back you up with some interesting contests all year long.

One such contest was the January Lunchtime, the first of the ‘luncheons’ this year. It was quite the heavy lunch with Triangle Classification (TRIANGCL), Exponential Sub-Palindromes (EXPALIN), Peaks (PEAKS) and Table Covering (TABLECOV). Our author, problem setter and tester collectively set the young coders to task. Want to look them up?

Author: Kanstantsin Sokal
Tester: Pavel Sheftelevich
Editorialist: Pawel Kacprzak

Coming to the meal that was served, here is a play by play of the luncheon-

Triangular Classification won hands down in terms of its popularity. A total of 567 submissions with a full score made it a problem with 28.61% accuracy. But as is known, the problem just played its part in easing the participants into the lunchtime, with lots more to come. Some familiar names like ptnk131627, mbrc, waterfalls sprung up at the lunchtime as always and stayed high up the rank tables. waterfalls from Catlin Gabel School took away the contest with only greens to their name and a list of submissions that started at 11:08 am and ended at 12:43 showing everybody how it’s done! Table Covering had the second highest accuracy with 13.64%. This Ghariyal-path problem was on it’s best offence as only 5 successful submissions found the correct answer. ptnk131627 of VNU-HCM High School for the Gifted Vietnam, was the only young coder to have cracked the problem in the first hour and the first attempt. The main course also consisted of Exponential Sub-Palindromes that got the second most number of correct submissions with an accuracy of 7.03%. Last but definitely not the least was Peaks, that our Chef served to his friends Akshit and Aditi, the two biggest foodies in his gang. It resulted in the toughest part of the meal served to the coders with an accuracy of 2.7% and just 6 full-scored submissions. What can we say, our meal plans aren’t for the weak hearted, or come to think of it, the weak stomached 🙂

Yet another lunch went by and we got to see our regulars and new coders fight with gumption on our platform. We would like to serve more of you in the time to come and make it an official ‘lunch-date’ every month! That’s all from the Chef’s team for now as we gear up for the next contest. Here is a bit of trivia from January Lunchtime. We hope you had fun!

  • Total Users/Teams who have made a submission: 858
  • Total Submissions: 2866
  • Number of distinct users/teams with correct submissions: 785

And now for the winners announcement –

ROW Winners

  • waterfalls – Catlin Gabel School
  • ptnk131627 – VNU-HCM High School for the Gifted Vietnam
  • ladpro98 – Phan Boi Chau Gifted High School
  • minh141198 – High School for Gifted Students, Hanoi University of Science
  • aktl – Almaty Kazakh – Turkish High School
  • fleimgruber – Höhere technische Bundeslehranstalt Leonding
  • abc3141 – High school At Komaba, University of Tsukuba
  • nurbakhyt – Almaty Kazakh – Turkish High School
  • meirambek – Almaty Kazakh – Turkish High School
  • capawesome – Nancho Popovich Maths and Science High School

INDIA Winners

Signing off with a promise to be back,
Team CodeChef

P.S: Don’t forget the editorials! January Lunchtime 2016 Editorials

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