Hello, Codeforces!↵
↵
We are glad to invite you to participate in [contest:2138] and [contest:2139] on [contest_time:2138].↵
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The round will be **rated for everyone**. You will be given **6 problems** and **3 hours** to solve them in both divisions. Some problems will be divided into subtasks.↵
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The problems were authored and prepared by [user:installb,2025-09-06], [user:wjy666,2025-09-06], [user:tarjen,2025-09-06], [user:starsilk,2025-09-06] and [user:2014CAIS01,2025-09-06].↵
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We would like to thank:↵
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- [user:maomao90,2025-09-06] for his great coordination.↵
- [user:Alexdat2000,2025-09-06] for Russian translation.↵
- [user:Um_nik,2025-09-06], [user:jqdai0815,2025-09-06] and [user:SSerxhs,2025-09-06] for red-black testing.↵
- [user:A_G,2025-09-06], [user:-skyline-,2025-09-06] and [user:__baozii__,2025-09-06] for red testing.↵
- [user:fishy15,2025-09-06], [user:oolimry,2025-09-06], [user:Boboge,2025-09-06], [user:nanani,2025-09-06], [user:Retired_shstyle,2025-09-06] and [user:Tobo,2025-09-06] for orange testing.↵
- [user:qsmcgogo,2025-09-06] and [user:Zhi_Sheng,2025-09-06] for purple testing.↵
- [user:goddddgg,2025-09-06] for blue testing.↵
- [user:jellybean259,2025-09-06] for green testing.↵
- [user:akqxolotl,2025-09-06] for grey testing.↵
- [user:MikeMirzayanov,2025-09-06] and [user:kan,2025-09-06] for the great platforms.↵
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The scoring distribution is below.↵
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- **Div. 2**: $ 500-1000-1500-2250-(2250+750)-3500 $↵
- **Div. 1**: $ 500-1250-(1250+750)-2500-(2750+1500)-4250 $↵
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Good luck to everyone! (=^･ω･^=)↵
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**UPD**：Unfortunately, it was discovered very lately (2 hours after the contest began) that the statement was missing an important condition. The correct statement should include the line "The operation 2 can only be applied at most once." The statement will be corrected soon.↵
↵
We believe this issue affected many participants of this round, and therefore we have to declare this round unrated. We sincerely apologize for this mistake.
↵
We are glad to invite you to participate in [contest:2138] and [contest:2139] on [contest_time:2138].↵
↵
The round will be **rated for everyone**. You will be given **6 problems** and **3 hours** to solve them in both divisions. Some problems will be divided into subtasks.↵
↵
The problems were authored and prepared by [user:installb,2025-09-06], [user:wjy666,2025-09-06], [user:tarjen,2025-09-06], [user:starsilk,2025-09-06] and [user:2014CAIS01,2025-09-06].↵
↵
We would like to thank:↵
↵
- [user:maomao90,2025-09-06] for his great coordination.↵
- [user:Alexdat2000,2025-09-06] for Russian translation.↵
- [user:Um_nik,2025-09-06], [user:jqdai0815,2025-09-06] and [user:SSerxhs,2025-09-06] for red-black testing.↵
- [user:A_G,2025-09-06], [user:-skyline-,2025-09-06] and [user:__baozii__,2025-09-06] for red testing.↵
- [user:fishy15,2025-09-06], [user:oolimry,2025-09-06], [user:Boboge,2025-09-06], [user:nanani,2025-09-06], [user:Retired_shstyle,2025-09-06] and [user:Tobo,2025-09-06] for orange testing.↵
- [user:qsmcgogo,2025-09-06] and [user:Zhi_Sheng,2025-09-06] for purple testing.↵
- [user:goddddgg,2025-09-06] for blue testing.↵
- [user:jellybean259,2025-09-06] for green testing.↵
- [user:akqxolotl,2025-09-06] for grey testing.↵
- [user:MikeMirzayanov,2025-09-06] and [user:kan,2025-09-06] for the great platforms.↵
↵
The scoring distribution is below.↵
↵
- **Div. 2**: $ 500-1000-1500-2250-(2250+750)-3500 $↵
- **Div. 1**: $ 500-1250-(1250+750)-2500-(2750+1500)-4250 $↵
↵
Good luck to everyone! (=^･ω･^=)↵
↵
**UPD**：Unfortunately, it was discovered very lately (2 hours after the contest began) that the statement was missing an important condition. The correct statement should include the line "The operation 2 can only be applied at most once." The statement will be corrected soon.↵
↵
We believe this issue affected many participants of this round, and therefore we have to declare this round unrated. We sincerely apologize for this mistake.
