### dojiboy9's blog

By dojiboy9, 9 years ago,

Hello everyone. Here is my "analysis" on today's 550 problem from TopCoder SRM 648 (Div. 1).

This was a pretty hard problem for me. I was unable to solve it :(. After the contest, I tried to understand the Accepted solutions. After this, I wrote this analysis to (hopefully) "recreate" and recapture the ideas necessary to solve the problem on my own.

I hope this helps!

• +48

By dojiboy9, 9 years ago,

Hello,

Here is one of my in-depth problem analyses for the recent SRM636 500 problem (ClosestRabbit).

As usual, please comment below if you have any suggestions / questions.

PS: The blog is going through some "renovations". I decided to move it away from the infamous WordPress. So some features/old-posts may be missing right now.

Cheers!

• +81

By dojiboy9, 9 years ago,

If anyone was wondering, here is my personal post about the 550 problem from yesterday's TopCoder round.

In summary, this problem required modular arithmetic and a trick I've seen used to solve the Coin Change Problem. Let me know if you have any comments or questions!

• +56

By dojiboy9, 10 years ago,

Here is a short editorial on TopCoder SRM 605 Medium problem, AlienAndSetDiv1. As mentioned, I would like to share more as I am learning. Maybe this will help me learn better and help others learn as well! Spoiler

• +30

By dojiboy9, 10 years ago,

I call it "Theory of Problem Solving": a blog of tutorials and in-depth analyses of the problems that I solve. I would like to share this with everyone in the Codeforces community!

It's just getting started, and many of my analyses are really long, because I wanted to focus on the process more than the solution. Anyway, take a look at the analysis of Codeforces Round #224 (Div. 2) E — Ksenia and Combinatorics!

Feel free to make comments or requests for specific problems!

Thanks everyone! Happy Coding! I will be posting more soon. Cheers!

• +89