Hello Everyone!
We would like to invite you all to participate in the SPYBITS2022 CONTEST-2 aka the Spybits CP Contest, under the banner of Udyam'22, IIT (BHU) Varanasi. The contest will be held on 5th April 2022 at 19:05 IST.

Udyam is the annual technical fest of the Department of Electronics Engineering, Indian Institute of Technology (BHU),Varanasi. To know more about Udyam, please visit the official website of Udyam'22.

We would like to thank our Title Sponsor, Cisco and Event Sponsor, Nullcon.

Spybits CP Contest is the second round of the SPYBITS event, in which your algorithmic problem solving skills are tested. This contest is open to everyone, so you can appear in the contest even if you haven't registered for the SPYBITS event.

All the problems have been prepared by XORring-Samurai, Lazy_Propagater and me, new2022.

We would like to thank emperor_gentoo, The_Hawkeye, adikrsingh, loud_mouth, multibagger, anotherTry and ashuKS29 for testing all the problems.

Prizes

The top 3 participants will get cash prize worth 700 INR, 500 INR and 300 INR respectively along with free course vouchers of Growth School, besides this 5 tshirts from Nullcon will be randomly distributed among the next 50 position holders.

Registration for Prizes

To be considered eligible for prizes, you need to separately register on the website of Udyam'22. Read the instructions for registering from here.

You will get 2 hours and 30 minutes to solve 7 8 problems. The scoring will be of ICPC style, you can learn more about it from the contest page. The contest will be unrated, Sorry to all those who were expecting a rated round, we couldn't get it rated due to time constraints.

I hope you guys will like the problems, Good Luck everyone!

UPD :

Editorial of CP00
Editorial of CP01
Editorial of CP02
Editorial of CP03
Editorial of CP_04
Editorial of CP_05
Editorial of CP06
Editorial of CP07

Hello Everyone!
We would like to invite you all to participate in the SPYBITS2022 CONTEST-1 aka the Spybits Number Theory Contest, under the banner of Udyam'22, IIT (BHU) Varanasi. The contest will be held on 28th Jan 2022 at 20:00 IST.

Udyam is the annual technical fest of the Department of Electronics Engineering, Indian Institute of Technology (BHU),Varanasi. To know more about Udyam, please visit the official website of Udyam'22.

Spybits Number Theory Contest is the first round of the SPYBITS event, in which your Number Theory knowledge is tested along with your programming skills. This contest is open to everyone, so you can appear in the contest even if you haven't registered for the SPYBITS event.

All the problems have been prepared by XORring-Samurai, Lazy_Propagater and me, new2022.

We would like to thank sudoSieg and adikrsingh for testing all the problems.

You will get 2 hours 2 hours and 15 minutes to solve 7 problems, all the problems will be majorly based on number theory. The scoring will be of ICPC style, you can learn more about it from the contest page.

I hope you guys will like the problems, Good Luck everyone!

P.S.

In the 'Upcoming Coding contests' section of Codechef, you can see a contest with code SNTC2021 (if you mark 'show all contests') scheduled on 31st May 2022, kindly ignore it for the time being, it is the consequence of a mess created by me, we will see how to fix it later.
Thank You.

Edit

We have decided to increase the contest duration by 15 minutes. Now you will get 2 hours and 15 minutes to solve 7 problems.

While practicing on codeforces, often we come across some very interesting problems, besides thinking about their solutions, it interests me a lot to know that how did the author frame that particular problem. In a couple of months, I have to conduct a contest for my juniors in the college and it seems like I don't have enough interesting problem ideas, can someone, who is an experienced problem setter tell me about the general recipe that he/she follows to set interesting problems.

I often struggle with such problems which require some minute observation i.e. mainly problems with some sort of constructive approach or those which are based on game theory(without any rigourous maths). Either i am not able to find any sort of pattern or it takes me too much of time to do so. Can anyone share their approach towards such problems or some practise method that helped them to gain an edge over such problems?