Are there AI bots on spoj, solving problems? I am suspicious about some users (there are four of them) with very high number of total submissions, in the top 20. Can someone give information on this? I would like to know if AI technology is that much developed, that’s why I am asking this question.
Thanks in advance.
Aug '19
Sep '23
I see what you mean. All four joined in the same month, all attend the same university, all have roughly the same number of accepted solutions, and number of submissions, and the number of submissions is way higher than any others I’ve seen.
They’re also submitting to many different problems within a few minutes of the previous. They also submit wrong answers to problems where they’ve already been accepted.
All very curious, if not suspicious.
Ah… an idea… I suspect they’re bots outsourcing the validation of submissions from an internal online judge. Strange names if that’s the case though.
Yes, they are bots, https://vjudge.net/59 uses few accs that are in top 20… Whoever submits on https://vjudge.net/59, the bot sumbits their solution and checks it, and returns result to user on their site…
I wonder if they asked permission from SPOJ first?
As a courtesy, you’d think they’d give their accounts names that made that clear, and remove them from the rankings.
That’s right, they should not be in the rank list, because they are not real, individual users. So either they should be removed (from the list) by themselves, or by the admins.
Rather than unranked, these should have their submissions auto-disqualified to prevent messing up the ranks and points for individual problems as well (eg. all 5 luogu_bot* clones getting AC in a problem solved by only 20 users). Their nicks or descriptions should clearly indicate the robot identity too IMHO. BTW. aside of the 4 ones from ranks 13-16, also Nick19 appears to be from the same bunch despite having Afghanistan as location (the other ones also used to have avatars of chinese generals).
As of today, the most notorious bots have had their submissions disqualified and their accounts banned. The changes will take a bit to propagate through all the problems’ individual rankings and users’ points records due to massive amounts of submissions “contributed” by these bots, but the global toplist is already cleared. Turns out the accounts were parasites taking advantage of SPOJ processing power without any agreement to do so. Thanks to Robert Lewoń and the rest of admins for taking care of things.
Make sure to bring up such matters here should they recur.
Hi.
I am a user of www.luogu.com.cn18. luogu_bot is a bot account in this website. I’m sorry that this account has an impact on your work. This website has a new feature called RemoteJudge. It likes vjudge. They are essentially the same. It can submit Luogu Users’ code to other Online Judges(Including but not limited to SPOJ) for the convenience of Luogu users. luogu_bot is a robot and account responsible for submitting code. It is not malicious.
I agree to clear the global leaderboard of this account, but I hope you can allow it to continue to submit.
In addition, this robot is really not AI. Behind the robot, there are actually a large number of Luogu users.
If you want to know more, please see https://www.luogu.com.cn/blog/luogu/remotejudge14.
Thanks.
This can make spoj more famous in China（ Luogu is a Chinese website, and I am also Chinese.)
I also met spoj through Luogu remotejdge.
The suspicion is that crowdforces110 is another bot account using SPOJ to validate submissions.
edit: and now cforces13.
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|---|---|---|---|---|
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