# So, about those plagiarism flags on 2170F...↵
↵
↵
Look, I’m going to address the elephant in the room.↵
↵
If you’ve seen my recent submission **[351054331]** for problem **2170F**, or if you’ve seen the downvotes on my recent comments, you know the situation. I’ve been flagged for plagiarism. My code looks suspiciously similar to a huge "cluster" of other submissions.↵
↵
I get it. Honestly, I do.↵
↵
If I were a judge or a regular user scrolling through the standings, and I saw 50 people submit nearly identical code, my first thought would be: *"Okay, clearly someone leaked the solution on Telegram."* It looks bad. It looks guilty.↵
↵
But here is the incredibly frustrating reality: **I didn't copy a single line.** And I want to explain why my code looks like everyone else's, not as an excuse, but as a developer.↵
↵
## The "Hello World" Effect↵
↵
Imagine I asked 100 C++ programmers to write a "Hello World" program. They would all write:↵
`#include <iostream>`↵
`int main() { cout << "Hello World"; }`↵
↵
If 100 people submitted that, would you ban them all for plagiarism? Of course not. There is essentially only one optimal way to write it.↵
↵
**Problem 2170F is the "Hello World" of Offline DP.**↵
↵
This problem forces you into a tiny box. To pass the time limits, you *have* to use a specific set of tools. Once you pick those tools, the code basically writes itself.↵
↵
### 1. The "Backward Loop" that got me flagged↵
People are pointing out that my inner loop iterates backwards (`k--`). They say this is the "signature" of the leaked solution.↵
↵
Guys, come on. It’s a **Knapsack-style DP**. ↵
Iterating backwards is literally Rule #1 of 1D Knapsack optimization so you don't reuse the same item twice. I didn't write it that way because I was copying a cheat sheet; I wrote it that way because if I iterated forwards, **the code would be wrong**.↵
↵
I am essentially being punished for knowing how to write a correct Knapsack loop.↵
↵
### 2. The "Boilerplate" Trap↵
The problem requires handling queries offline. So, naturally, I made a vector of queries and iterated from `1` to `N`.↵
Is that copying? No, that’s just... how you solve offline query problems. That’s the standard template.↵
↵
## Caught in the Crossfire↵
↵
I think the reason I'm getting downvoted isn't because people genuinely analyzed my code and found proof of cheating. It's because the community is tired.↵
↵
We are all sick of cheaters. We are sick of contests being ruined by leaked solutions. So when a massive wave of cheaters comes in, the "innocent until proven guilty" mindset goes out the window. It becomes a witch hunt. The system sees a pattern, and it nukes everyone matching that pattern.↵
↵
I just happened to write the optimal, standard solution at the same time a bunch of copy-pasters did.↵
↵
## The Bottom Line↵
↵
It sucks to grind on a problem, figure out the optimization (the "Rightmost Index" trick), debug it, submit it, and then get slapped with a plagiarism tag just because the solution is standard.↵
↵
I’m not asking for special treatment. I’m just asking you to look at the context. Sometimes, "great minds think alike" isn't just a saying—in competitive programming, it’s often the only way to get AC.↵
↵
I didn't cheat. I just solved the problem.↵
↵
Thanks for hearing me out.↵
↵
↵
Look, I’m going to address the elephant in the room.↵
↵
If you’ve seen my recent submission **[351054331]** for problem **2170F**, or if you’ve seen the downvotes on my recent comments, you know the situation. I’ve been flagged for plagiarism. My code looks suspiciously similar to a huge "cluster" of other submissions.↵
↵
I get it. Honestly, I do.↵
↵
If I were a judge or a regular user scrolling through the standings, and I saw 50 people submit nearly identical code, my first thought would be: *"Okay, clearly someone leaked the solution on Telegram."* It looks bad. It looks guilty.↵
↵
But here is the incredibly frustrating reality: **I didn't copy a single line.** And I want to explain why my code looks like everyone else's, not as an excuse, but as a developer.↵
↵
## The "Hello World" Effect↵
↵
Imagine I asked 100 C++ programmers to write a "Hello World" program. They would all write:↵
`#include <iostream>`↵
`int main() { cout << "Hello World"; }`↵
↵
If 100 people submitted that, would you ban them all for plagiarism? Of course not. There is essentially only one optimal way to write it.↵
↵
**Problem 2170F is the "Hello World" of Offline DP.**↵
↵
This problem forces you into a tiny box. To pass the time limits, you *have* to use a specific set of tools. Once you pick those tools, the code basically writes itself.↵
↵
### 1. The "Backward Loop" that got me flagged↵
People are pointing out that my inner loop iterates backwards (`k--`). They say this is the "signature" of the leaked solution.↵
↵
Guys, come on. It’s a **Knapsack-style DP**. ↵
Iterating backwards is literally Rule #1 of 1D Knapsack optimization so you don't reuse the same item twice. I didn't write it that way because I was copying a cheat sheet; I wrote it that way because if I iterated forwards, **the code would be wrong**.↵
↵
I am essentially being punished for knowing how to write a correct Knapsack loop.↵
↵
### 2. The "Boilerplate" Trap↵
The problem requires handling queries offline. So, naturally, I made a vector of queries and iterated from `1` to `N`.↵
Is that copying? No, that’s just... how you solve offline query problems. That’s the standard template.↵
↵
## Caught in the Crossfire↵
↵
I think the reason I'm getting downvoted isn't because people genuinely analyzed my code and found proof of cheating. It's because the community is tired.↵
↵
We are all sick of cheaters. We are sick of contests being ruined by leaked solutions. So when a massive wave of cheaters comes in, the "innocent until proven guilty" mindset goes out the window. It becomes a witch hunt. The system sees a pattern, and it nukes everyone matching that pattern.↵
↵
I just happened to write the optimal, standard solution at the same time a bunch of copy-pasters did.↵
↵
## The Bottom Line↵
↵
It sucks to grind on a problem, figure out the optimization (the "Rightmost Index" trick), debug it, submit it, and then get slapped with a plagiarism tag just because the solution is standard.↵
↵
I’m not asking for special treatment. I’m just asking you to look at the context. Sometimes, "great minds think alike" isn't just a saying—in competitive programming, it’s often the only way to get AC.↵
↵
I didn't cheat. I just solved the problem.↵
↵
Thanks for hearing me out.↵
