### gyh20's blog

By gyh20, history, 3 weeks ago,

I took part in the Codeforces round yesterday, and just now I received a message saying my code coincides with someone else's. I didn't know the person at all. I solved the problem a lot earlier than him, and I didn't share my code to anyone or anywhere. I think it's just a coincidence because the solution is short and the code is simple. Could you please take a look into this?MikeMirzayanov

Submissions:113994230 114020895

• +43

By gyh20, history, 8 months ago,

Sorry for the slow Editorial, I am new using Polygon.

Special thanks to TechNite for his help.

About one hour before the contest _cherry_ found the same problem, then we changed it to $k=4$ and he found another same one again. We are running out of time so we didn't have time for a new one, so we changed $k$ to $5$. But we didn't know there is still a similar problem. Sorry again.

idea:gyh20 solution:gyh20 tutorial:TechNite

Jury solution:92671575

idea:tianbu solution:tianbu tutorial:tianbu

Jury solution:92671590

idea:gyh20 solution:gyh20 tutorial:tianbu

Jury solution:92671713

idea:isaf27 solution:gyh20 tutorial:TechNite

Jury solution:92671763

idea:gyh20 solution:gyh20 tutorial:gyh20

Jury solution:92671740

• +173

By gyh20, history, 13 months ago,

I am trying to make problems using Polygon,but I am having problems with pictures.

Can anyone tell me how to add a picture to the problem in Polygon? I am not good at Latex.

Thank you very much.