Hi, Codeforces Community!

Codefest'19 — a diverse roster of high-quality programming competitions by Department of Computer Science and Engineering, IIT Varanasi is excited to present *Mathmania*.

**Mathmania** is a mathematical puzzle contest where a sound knowledge of mathematics together with computational thinking will be essential to solve problems. The motivation behind Mathmania is to provide a platform for the inquiring mind to dwelve into unfamiliar areas and learn new concepts in an exciting way.

The contest will take place at Hackerrank. This contest will be an individual event with a duration of **3 hours**, from Aug/24/2019 20:00 IST. The contest will consist of interesting mathematical challenges covering almost all domains of Mathematics, ranging from Number Theory, Algebra, Geometry, etc.

The contest has been prepared by hitman623, _shanky, daddy_is_home and _hiccup.

**Prizes -**

**1st Place: INR 20000**

**2nd Place: INR 12000**

**3rd Place: INR 8000**

**1st Place, India: INR 6000**

**1st Place, IIT(BHU): INR 3000**

**1st Place among freshers (1st and 2nd year), IIT(BHU): INR 1000**

You can find the previous year's Mathmania here:

**UPD:** Participants will be offered **12** problems and **3 hours** to solve them.

**UPD1:** The contest starts in an hour.

**UPD2:** The contest starts in 5 mins.

The contest is over. Thank you everyone for participating.

The editorials are up and the solutions are public.

Hope you enjoyed the problems. The winners will be contacted soon.

Why I don't see it on hackerrank's contests announcement?

Go to college contests.

Link

Clashes with LeetCode Biweekly Contest.

I have done the HackerRank contest registration as well as general registration on the CodeFest website. Anything else required?

No. You are good to go.

Yes , you need to win

Question Connect the dots is a copy of Google Kickstart 2017 Round A (Problem 1)

What about this?

We were not aware of that. Apologies.

The contest was good, especially the limit one. Please provide editorial for the questions. It would be really helpful

The editorials are up. Glad you enjoyed the contest. :)

Are you sure about the correctness of your solution to the problem "The Interstellar"?

I think the precision of my solution is definitely better than yours.

UPD: Sorry, it's my fault. I compute $$$\int a^2\cos^2(x)+b^2\sin^2(x) dx$$$ instead of $$$\int \sqrt{a^2\cos^2(x)+b^2\sin^2(x)} dx$$$ during the contest. :(

BTW, any corner case of "Evans Tries an O'Level"? My solution got WA on only one testcase.

That testcase was incorrect. Apologies. Your solution was indeed correct.

Nice problem set :)