brezhart's blog

ICPC challange 2026. Possible cheating
By brezhart, history, 7 weeks ago, In English

Each of those submission scores exactly: 16331.003 and shares time/memory usage

when (UTC)	handle	        ms	mem     link
08-19 10:10	mojo__hugo	500	400 KB	387664604
08-20 03:39	Lao_mang	500	400 KB	387745570
08-19 11:25	mojo__hugo	437	400 KB	387672276
08-19 17:22	Lao_mang	437	400 KB	387712808
08-20 01:53	Lao_mang	437	300 KB	387740311

mojo__hugo and Lao_mang are from the Guangzhou University. Both participants are in top15 on pretests (top 10 and top13 accordingly) and expected to win 3000 euro each.

Treat this post as call to action. Call to investigate those solutions carefully, before posting final results. This is not direct cheating accusation

Cheating in the contests with such high monetary prices should not be tolerated.

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7 weeks ago, hide # |
 
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Another two:

handle	        when (UTC)	score	        ms	mem	link
Sakuya_maid	08-25 15:08	16411.56	531	100 KB	388368692
Null_Resot	08-26 05:34	16411.56	531	100 KB	388420945

Accidentally or not, it was first submission of Null_Resot.

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7 weeks ago, hide # |
← Rev. 2  
Vote: I like it -49 Vote: I do not like it

I am very sorry about this. As a labmate, I purchased access to an AI website account from mojo_hugo to get through this competition. Due to my operational error, our chat sessions ended up sharing GPT memory, and I accidentally obtained his code framework through the conversation confusion. After we submitted this time, we discovered the issue, and we both stopped using that AI website. The website is similar to a GPT Web distribution platform; here is its address: https://p1.chuyungpt.com/. If the organizers need, I can provide the subsequent code iteration framework and timestamps to prove that this was only a misunderstanding.

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    7 weeks ago, hide # ^ |
     
    Vote: I like it +15 Vote: I do not like it

    I hope you immediately contacted contest organizers when that accident happened and didn't wait for others to discover it

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      7 weeks ago, hide # ^ |
       
      Vote: I like it -6 Vote: I do not like it

      You're right. At the time, I didn't report this issue to the event organizers promptly—I only reached a private agreement with mojo_hugo that neither of us would continue using that account. Perhaps that did affect the fairness of the competition. This was my first time participating in a competition with special AI-related rules, and I'm sorry for the trouble I've caused everyone. I'm also willing to take responsibility for failing to report the issue to the organizers in a timely manner. I think this, beyond the valuable brainstorming I gained from the event, is an even more important lesson for me to remember going forward.

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    7 weeks ago, hide # ^ |
     
    Vote: I like it -10 Vote: I do not like it

    Bro, I believe you. What a pity. I believe the previous was just an accident, and these two accounts have absolutely no connection whatsoever. hhhhhhhhhh

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    7 weeks ago, hide # ^ |
     
    Vote: I like it -7 Vote: I do not like it

    I sent a follow-up email to the organizing committee. I will cooperate with their subsequent investigation, and if the committee determines that my actions ultimately affected the fairness of the competition, I am willing to take full responsibility. Maybe it too lateeeee.

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7 weeks ago, hide # |
 
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time (UTC)	handle	score	        ms	mem	      language	        submission
08-28 08:58:17	chzhc	16,424.892	687	100 KB	C++23 (GCC 14-64, msys2)	388656770
08-28 09:06:06	ASD_UIU	16,424.892	734	100 KB	C++20 (GCC 13-64)	388657539

Identical scores 8 minutes apart, both are member of the same team

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7 weeks ago, hide # |
← Rev. 5  
Vote: I like it -9 Vote: I do not like it

First, I need to apologize.

This matter has absolutely nothing to do with Sakuya. We were in the same computer lab; I happened to see him participating in this competition, so I copied his code and submitted it while he was away. He was completely unaware of this, so please do not blame him.

I am willing to forfeit my eligibility and apologize to Sakuya_maid.

Additionally, I was unaware that this contest involved prize money, so I never registered with icpcglobal in the first place; consequently, my actions will not affect the prize rankings. Once again, I apologize.

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7 weeks ago, hide # |
← Rev. 3  
Vote: I like it 0 Vote: I do not like it

First, I need to apology. I believe this whole question started because of me. mojo is a good algorithm expert, and I have always learned from him. We did not communicate during this competition, and our schedules barely overlapped due to his work commitments. So please do not blame him.

Facts, my account submitted code that was extremely similar in framework to his. As the party at fault, I am willing to forfeit my eligibility and offer my sincere apologies to mojo__hugo and everyone affected.

I will give up my icpcglobal team soon.

I don't believe in such coincidences in this world, but what I have done is the truth. Once again, I feel sorry.

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6 weeks ago, hide # |
 
Vote: I like it -8 Vote: I do not like it

"Cheating in the contests with such high monetary prices should not be tolerated."

Cheating in any contest should not be tolerated.

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