Recently I've had my first hacked problem: 372051449. I didn't really think much of hacking up until this point, but this problem made me rethink. I have a few questions in mind:

1. What type of problems are most likely hackable?

2. What are the general methods used to hack a submission?

3. What preventive measures can be taken to protect a solution from hacks?

I'm interested in your ideas about hacking. Feel free to drop a comment!

Hi, it's me, 2IA7A8E6A7. I recently got the specialist rank in Codeforces Round 1074 (Div. 4), which is quite impressive, but I still want more. To make it clear what I want to achieve this year, I have made a to-do list:

1. Get 2100+ max rating or an average rating of 1700,

2. Get +20 contribution,

3. Get a response from a person with +100 contribution,

4. Catch 50 cheaters,

5. And lastly, solve 50 2100+ problems.

I wonder if you have any set goals for 2026, if so, you can comment on this blog and share it to all of us.

I'm looking forward to your responses!!!

Sincerely,

2IA7A8E6A7

(PS: I just joined Codeforces, please help me on tips to write blogs, I really appreciate it!)

Edit: Every month I will write a blog to check on our progress and also discuss some monthly "challenges".