Invitation to CodeChef February Lunchtime 2021

We invite you to participate in CodeChef’s February Lunchtime, this Saturday, 27th February.

Time: 7:30 PM - 10:30 PM IST

You will be given 3 hours to solve 7 problems in Div3 and 6 problems in Div2/Div1.

CodeChef is happy to announce Codenation Innovation Labs (CNIL) as a recruiter for February Lunchtime 2021. CNIL is hiring programmers for the Software Development Engineer role and its Junior Trilogy University (Intern Programme). Programmers from India and across the globe are invited by Codenation Innovation Labs to apply for opportunities at its organization.

Also, if you have some original and engaging problem ideas, and you’re interested in them being used in CodeChef’s contests, you can share them here.

Joining me on the problem setting panel are:


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.

The video editorials of the problems will be available on our YouTube channel as soon as the contest ends. Subscribe to get notifications about our new editorials.

Admin Note: Special thanks to um_nik for his help and for suggesting better solutions for the harder problems.

Good luck and have fun!


Hope for the Rated Contest !!!


pls clarify problem 2

In 1st problem i am getting TLE…