MIKE, ban BOTS, please!
Difference between en23 and en24, changed 828 character(s)
I know there are some other posts about this. I list some bots here.(I'm also wondering why some account were not banned before)↵
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**Bots with UUID in the code.**↵
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[user:wtehjnyu426,2025-11-17] [user:nxaadm9648,2025-11-17] [user:zwatti772,2025-11-17] [user:aqkwgw19463,2025-11-17] [user:dftvmz000,2025-11-17] [user:kxwzyd795,2025-11-17] [user:rbaglkv2489,2025-11-17] [user:ndxxau86464,2025-11-17] [user:ohfwwv873,2025-11-17] [user:tujjmglhyu41495,2025-11-17] [user:hkebxfxb9714,2025-11-17] [user:cexfkoe511,2025-11-17] [user:zsphrmp855,2025-11-17] [user:xeyjmne82169,2025-11-17] [user:jpzqgrs59098,2025-11-17] [user:jttrfprg748,2025-11-17]↵
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(Bad English, so I used AI.)↵
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**Bots appear to be from the same LLM.**↵
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They have random names(the name length is always 10), an empty first line in their code, and attempt problems sequentially by contest ID (e.g., one tried IDs 835–909).↵
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**Since these accounts are registered and abandoned within hours, I think additional registration verification is needed.**↵
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[user:9gg0sa9p45,2025-11-17] [user:9xhgcyp54l,2025-11-17] [user:ohisyhk0fz,2025-11-17] [user:5xhdalkhz5,2025-11-17] **<-This one submit CE code only** [user:6oiueypfzf,2025-11-17] [user:dhenhy2p4l,2025-11-17] [user:snuxa6ph4e,2025-11-17] [user:gs0oy52p5z,2025-11-17] [user:ic9nca2kz5,2025-11-19] [user:5n5gy9p9f4,2025-11-19] [user:o2sghy93s3,2025-11-19] [user:ipau8609d3,2025-11-19] [user:9oxie5g474,2025-11-19] [user:liifaupfu4,2025-11-19] [user:9oxie5g474,2025-11-19] [user:agxs5cgp,2025-11-19] [user:oshily5pz2,2025-11-19] [user:w4ac5862jt,2025-11-19] [user:d83f0gw083,2025-11-19] [user:fihxaepl24,2025-11-19] [user:5no6eyp0b2,2025-11-19] [user:guedfafk0b,2025-11-19] [user:2x2dcypsuz,2025-11-19] [user:eo5dfykhfb,2025-11-19] [user:i2nh0a6pte,2025-11-19] [user:sn0nfprfsn,2025-11-19] [user:o5x5eprcfo,2025-11-19] [user:wa2rgtn9g6,2025-11-19] [user:2xwmxvegk9,2025-11-19] [user:x1sae0mm1r,2025-11-19] [user:6nn5laemlo,2025-11-19] [user:n0nsy239sm,2025-11-19] [user:uo5ohyc3n0,2025-11-19] [user:2nxcysmsm5,2025-11-19] [user:x2fxeycku4,2025-11-19] [user:x59xey5p42,2025-11-19] [user:ohxccamem9,2025-11-19] [user:hgisal9k4f,2025-11-19] [user:n0fo5a3esm,2025-11-19] [user:eg9ia5c3sm,2025-11-19] [user:ofilfa2pzs,2025-11-19] [user:o9x5a60ml3,2025-11-19] [user:fi0iyl5k24,2025-11-19] [user:o90gau2mem,2025-11-19] [user:dli9y2ku4s,2025-11-19] [user:udo2lyhpf4,2025-11-19] [user:i56da0kh0b,2025-11-19] [user:snd0calp45,2025-11-19] [user:ldn2k6cb4f,2025-11-19] [user:sxi0ahpe4c,2025-11-19] [user:edxfk5htz0,2025-11-19] [user:2idsyseps4,2025-11-19] [user:nld2auekbs,2025-11-19] [user:6nnshktse4,2025-11-19] [user:0dhosa6p4c,2025-11-19] [user:0insahp04c,2025-11-19] [user:g62dp09b9z,2025-11-19]↵
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**Smarter bots, only can be known with AI comments.**↵
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[user:6oo9m2q9ly,2025-11-19] [user:cnfnkhte7h,2025-11-19] [user:hgds9m4s67,2025-11-19] [user:mnhsri975,2025-11-19] [user:5d9xey36nh,2025-11-19] [user:aefnvo7863,2025-11-19] [user:fqoijwp715,2025-11-19] [user:x5fn9ak2c1,2025-11-19] [user:bfsbitu5136,2025-11-19] [user:paegcfltt2424,2025-11-19] [user:gfuohy3ffp,2025-11-19]↵
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**Maybe bots, but "Recently, your account was used to crawl." so I can't look submission.**↵
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[user:fdof5y5pz0,2025-11-19] [user:9xfxa0p9e4,2025-11-19] [user:ho0xkf89nu,2025-11-19] [user:d9sxhykc4u,2025-11-19] [user:g5g2y0p049,2025-11-19] [user:ux5o0ap6t6,2025-11-19] [user:n9uok268n9,2025-11-19] [user:g0fxkfr2o5,2025-11-19] [user:os6deak5ze,2025-11-19] [user:hdx5acpu49,2025-11-19] [user:edisy6kl0z,2025-11-19] [user:dcdcahckz5,2025-11-19] [user:n6ouys0pz2,2025-11-19] [user:5oi9afkuet,2025-11-19] [user:5x6dk9r29o,2025-11-19] [user:2n2oa5p9ut,2025-11-19] [user:exg9a0spte,2025-11-19] [user:9xfxa0p9e4,2025-11-19] [user:1ndh36m90e,2025-11-19] [user:17e9boildj,2025-11-19] [user:dc5nahkez5,2025-11-19] [user:0xlouymcxf,2025-11-19] [user:d2cgpl6bc7,2025-11-19] [user:d6hdalpc5z,2025-11-19] [user:fn6i2aekzs,2025-11-19] [user:n5x0auekzu,2025-11-19] [user:x2lney9p5z,2025-11-19] [user:fig9cap510,2025-11-19] [user:d2ds6ahk24,2025-11-19] [user:dhnl9alk4u,2025-11-19] [user:du6n03j0ly,2025-11-19] [user:oe5gml9472,2025-11-19] [user:oelns3fjy5,2025-11-19] [user:ic0iumqeyh,2025-11-19] [user:eox2asp55z,2025-11-19] [user:dc9nasmen6,2025-11-19] [user:ifo9a9eku4,2025-11-19] [user:g0lx9yhpc4,2025-11-19] [user:dscdy25k46,2025-11-19] [user:lio5yfphzu,2025-11-19] [user:xufoea9pcz,2025-11-19] [user:nsx6y6lplz,2025-11-19] [user:6gnly5pl04,2025-11-19] [user:dugfuyksz5,2025-11-19] [user:ccvqfotgdc353,2025-11-19] [user:wetogec7678,2025-11-19]↵
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Each time I update this post, I found new bot accounts. =(↵
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Maybe I should @[user:MikeMirzayanov,2025-11-19]?↵
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UPD2: Merge [user:CarrotPlane,2025-11-19]'s comment.↵
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UPD1&3:Remove banned bots(only banned 7 of them here...).↵
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UPD4: Merge bots [here](https://mirror.codeforces.com/blog/entry/148498).↵
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UPD5: Merge bots [here](https://mirror.codeforces.com/blog/entry/148454).

History

 
 
 
 
Revisions
 
 
  Rev. Lang. By When Δ Comment
en40 English 123asdf123 2025-11-20 12:53:00 87
en39 English 123asdf123 2025-11-20 11:46:28 112
en38 English 123asdf123 2025-11-20 11:36:33 636 Tiny change: '8&10&11&12:Removed b' -> '8&10&11&12&13:Removed b'
en37 English 123asdf123 2025-11-20 11:31:36 187
en36 English 123asdf123 2025-11-20 11:27:47 645 banning!
en35 English 123asdf123 2025-11-20 11:17:03 8134 fix grammar and update
en34 English 123asdf123 2025-11-20 10:41:49 280 fix grammar
en33 English 123asdf123 2025-11-20 10:26:47 215
en32 English 123asdf123 2025-11-20 10:21:35 1199
en31 English 123asdf123 2025-11-20 09:59:22 7 fixed
en30 English 123asdf123 2025-11-20 09:58:55 331
en29 English 123asdf123 2025-11-20 09:49:03 526
en28 English 123asdf123 2025-11-19 16:38:16 234
en27 English 123asdf123 2025-11-19 16:32:22 609
en26 English 123asdf123 2025-11-19 15:56:09 1 Tiny change: ' 835–909).**The most' -> ' 835–909). **The most'
en25 English 123asdf123 2025-11-19 15:54:16 310
en24 English 123asdf123 2025-11-19 15:03:05 828
en23 English 123asdf123 2025-11-19 13:51:44 96 Fix OCR problem
en22 English 123asdf123 2025-11-19 13:48:52 2 Tiny change: ']\n\n---\n**Maybe ' -> ']\n\n---\n\n**Maybe '
en21 English 123asdf123 2025-11-19 13:47:52 691
en20 English 123asdf123 2025-11-19 11:50:14 145
en19 English 123asdf123 2025-11-19 10:42:59 331
en18 English 123asdf123 2025-11-19 10:29:11 71
en17 English 123asdf123 2025-11-19 10:23:52 430
en16 English 123asdf123 2025-11-19 10:05:09 88
en15 English 123asdf123 2025-11-19 09:55:05 322 Tiny change: 'from same person(random na' -> 'from same LLM(random na'
en14 English 123asdf123 2025-11-19 09:46:20 7 Tiny change: 'bots(only 7 of them' -> 'bots(only banned 7 of them'
en13 English 123asdf123 2025-11-19 09:45:57 196
en12 English 123asdf123 2025-11-19 09:43:04 493
en11 English 123asdf123 2025-11-19 06:10:58 439
en10 English 123asdf123 2025-11-19 05:53:32 58 Tiny change: '025-11-19]\n\n**Sma' -> '025-11-19] [user:w4ac5862jt] [user:d83f0gw083]\n\n**Sma'
en9 English 123asdf123 2025-11-19 05:46:50 317
en8 English 123asdf123 2025-11-19 05:36:07 58 Wrong sort again =(
en7 English 123asdf123 2025-11-19 05:33:33 58
en6 English 123asdf123 2025-11-19 05:32:05 515
en5 English 123asdf123 2025-11-19 05:25:57 593 Not Tiny change: '11-17]\n\n**Seem' -> '11-17]\n\n "Last visit" is 9/29 Hours ago.\n\n**Seem'
en4 English 123asdf123 2025-11-17 16:59:38 212
en3 English 123asdf123 2025-11-17 16:53:13 122
en2 English 123asdf123 2025-11-17 16:49:05 88
en1 English 123asdf123 2025-11-17 16:44:50 531 Initial revision (published)