Invitation to CodeChef February Lunchtime 2020

Greetings to you all!

We invite you to participate in the CodeChef February Lunchtime - the 3-hour contest which offers 5 challenging problems to be solved. Make the most of this leap year and show off your programming skills along with increasing your CodeChef rating.

The problem statements of the contest will be available in English, Hindi, Bengali, Russian, Mandarin, and Vietnamese. Also if you have some original and engaging problem ideas, and you’re interested in them being used in the CodeChef’s contests, you can share them here:

I hope you will join your fellow programmers and enjoy the contest problems.

Please give your feedback on the problem set in the comments below, after the contest.

Contest Details:

Time: 29th February 2020 (1930 hrs) to 29th February 2020 (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 Indian and top 10 Global school students from ranklist will receive certificates and CodeChef laddus, with which they can claim cool CodeChef goodies. Know more here.

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




PS : Any laddus for this ??


Thanks for reporting this :slight_smile: Fixed.
It doesn’t quite come under our definition of laddu-worthy bugs, but you do win one internet!


@admin @vijju123
I have one question about special Laddus categories (Random, First to solve, Country wise) in the context of Lunchtime contests. Are they applicable here? And if so are they also for school students (as other prizes in Lunchtime contests) or for everyone?

Excited for this ! Wishing everyone high ratings !



Haha bro

Is this a bug or what ?

Those who are submitting code for the problems now , ( which can be seen in recent activity ) but if we go to their profile page , the submission is not being shown :frowning:

@admin @vijju123

Code was visible for five minutes when contest begin.

@admin @vijju123

1 Like

Thank you for pointing it out! It has been fixed!

Huh? Did you even read what I mentioned? All I stated was that the issue has been resolved and you try justifying it by stating someone submitted an AC code when the issue persisted. What does “resolved” mean then?

Yes, it was a manual error from our end which was fixed in a while. Apologies for the issue.

1 Like

Will convey to devs.

What about my question above?
@admin @vijju123

You can read about it here: How do I win a CodeChef Goodie?

Yes, they are applicable to Lunchtimes as well. And it’s for all the participants, not just for school students.

I read this topic. But I didn’t found there explicit answer to my question, so I decided to ask it here.

Nice, thank you for the reply.

i couldn’t solve a single one :joy:

That was umm… humbling to say the least.

lol i was able to see the first question due to the bug… modified it…and AC, thanks for the epic bug !


This contest should be unrated because someone saw solution due to “view-solution” option and shared it with many people on Watsapp :sleepy: