Codeforces Round 1105 (Div. 1, Div. 2)

Revision en2, by Gold14526, 2026-06-22 09:12:49

你好，Codeforces!

We are delighted to invite you to participate in Codeforces Round 1105 (Div. 1) or Codeforces Round 1105 (Div. 2),which will be held on Saturday, June 27, 2026 at 22:35UTC+8.

For both division 1 ans division 2,you will be given $$$2.5$$$ hours to solve $$$6$$$ problems.

The scoring distribution will be announced later.

The problems were authored and prepared by Gold14526,Milkcat2009 and wangmarui.

We would really like to thank the following people for making this round possible:

  • cadmiumky for the great coordination.
  • hcywoi and Network_Error who also prepared problems that were ultimately not used in this round.
  • lkrqwq for optimizing many details of problems.

History

 
 
 
 
Revisions
 
 
  Rev. Lang. By When Δ Comment
en20 English cadmiumky 2026-06-29 14:21:04 63
en19 English cadmiumky 2026-06-27 20:25:50 78
en18 English cadmiumky 2026-06-26 10:28:42 62
en17 English cadmiumky 2026-06-25 19:25:06 6 Tiny change: 'ontest:2238] or [contest:2238], both of' -> 'ontest:2239] or [contest:2240], both of'
en16 English cadmiumky 2026-06-25 19:24:33 6 Tiny change: 'ontest:2239] or [contest:2240], both of' -> 'ontest:2238] or [contest:2238], both of'
en15 English cadmiumky 2026-06-25 19:20:47 2
en14 English cadmiumky 2026-06-25 17:49:01 383
en13 English cadmiumky 2026-06-25 17:40:45 2
en12 English cadmiumky 2026-06-24 12:27:36 2 Tiny change: 'ution: **TDB**\n\nGood' -> 'ution: **TBD**\n\nGood'
en11 English Gold14526 2026-06-23 02:19:15 31 Tiny change: '\n- [user:err' -> '\n- [user:Starsilk] and [user:err'
en10 English cadmiumky 2026-06-22 16:32:07 68
en9 English Gold14526 2026-06-22 12:44:47 266 Tiny change: 't_time:2238].\n\nFor ' -> 't_time:2239].\n\nFor '
en8 English wangmarui 2026-06-22 11:48:40 2 Tiny change: 'ribution: $$\n\nGood L' -> 'ribution: \n\nGood L'
en7 English wangmarui 2026-06-22 11:47:07 281 (published)
en6 English Milkcat2009 2026-06-22 09:29:18 3 Tiny change: 'ser:errorgan,2026-06-' -> 'ser:errorgorn,2026-06-'
en5 English Milkcat2009 2026-06-22 09:28:58 53 Tiny change: '\n- [user:' -> '\n- [user:errorgan,2026-06-22] for black red testing.\n- [user:'
en4 English Milkcat2009 2026-06-22 09:26:33 1 Tiny change: 'ivision 2,you will b' -> 'ivision 2, you will b'
en3 English Milkcat2009 2026-06-22 09:20:51 1012
en2 English Gold14526 2026-06-22 09:12:49 67 Tiny change: 'ound.\n- []' -> 'ound.\n- [user:lkrqwq] for optimizing many details of problems.\n- '
en1 English Gold14526 2026-06-22 09:08:01 1001 Initial revision (saved to drafts)