Invitation to CodeChef June Lunchtime 2018!

Hello CodeChef Community!

Once again we bring to you a fresh set of programming challenges with the June Lunchtime 2018, a three-hour contest of your coding abilities. Hope to see you all join us and challenge for the top spot!. Joining me this time on the problem setting panel are:

  • Admin: kingofnumbers (Hasan Jaddouh)
  • Problem Setter: (Ivan Safonov)
  • Editorialist: likecs (Bhuvnesh Jain)
  • Problem Tester: kingofnumbers (Hasan Jaddouh)
  • Statement Verifier: xellos0 (Jakub Safin)
  • Russian Translator: xcwgf666 (Sergey Kulik)
  • Mandarin Translator: huzecong (Hu Zecong)
  • Vietnamese Translator: (VNOI Team)

Contest Details:

Time: 30th June 2018 (1930 hrs) to 30th June 2018 (2230 hrs). (Indian Standard Time — +5:30 GMT) — Check your timezone .

Contest link:

Registration: You just need to have a CodeChef handle to participate. For all those, who are interested and do not have a CodeChef handle, are requested to register in order to participate.

Top 10 performers in Global and Indian category will get CodeChef laddus, with which the winners can claim cool CodeChef goodies. Know more here: (For those who have not yet got their previous winning, please send an email to [email protected])

Good Luck!
Hope to see you participating!
Happy Programming!


Why does it have an ACM style ranklist?


Why penalties are considered for wrong submissions please change the leaderboard type to IOI @admin

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Thanks to you guys and @aryanc403 (who reported the issue to me on PM notifying me immediately), the issue was resolved quickly :slight_smile:

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Waiting for editorials for the last two problems and thanking those who prepared this contest :slight_smile:

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Awww…you are such a sweetie! Congratulations on being 5 star :smiley:

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Thank you for your congratulations. I just sent an e-mail requesting to be a tester to the website administrator. I hope to succeed.

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Pray that I dont get assigned as editorialist when you’re tester. I am very, very strict >:-) xD xD.

All the best to you, that job is tough but I am sure you will pull it out :slight_smile:

The editorial for XORSORT2 is available now. Due to lack of internet and laptop is past few days, there was a delay in the editorials. I will upload the remaining one by tomorrow.

Thanks @likecs :smiley:

The editorials for all the problems are available now:







Do provide your feedback for them and sorry for the delays.