Annyeonghaseyo, Codeforces!↵
↵
We invite you to participate in [contest:2152], which will be held on [contest_time:2152].↵
↵
The round will be **rated for everyone**. You will be given **8 problems**, one of which is divided into two subtasks, and **3 hours** to solve them. One of the problems will be interactive, so make sure to read the [guide for interactive problems](https://mirror.codeforces.com/blog/entry/45307) before the contest.↵
↵
The problems are authored and prepared by [user:as_dfsdf,2025-09-29], [user:djm03178,2025-09-29], [user:ko_osaga,2025-09-29], and [user:qwerasdfzxcl,2025-09-29].↵
↵
We would like to thank:↵
↵
- [user:errorgorn,2025-09-29] for great coordination.↵
- [user:Alexdat2000,2025-09-29] for great Russian translation.↵
- [user:Adam_GS,2025-09-29], [user:ainta,2025-09-29], [user:bangan,2025-09-29], [user:BuzzyBeez,2025-09-29], [user:cookiedoth,2025-09-29], [user:Dragos,2025-09-29], [user:gamegame,2025-09-29], [user:garam1732,2025-09-29], [user:Geothermal,2025-09-29], [user:gs20036,2025-09-29], [user:harshith_04,2025-09-29], [user:hiroi_kikuri,2025-09-29], [user:kENN3N,2025-09-29], [user:madlogic,2025-09-29], [user:madtreap,2025-09-29], [user:maomao90,2025-09-29], [user:mathjuny,2025-09-29], [user:MEDAA,2025-09-29], [user:mujigae,2025-09-29], [user:nikolashami,2025-09-29], [user:Pacybwoah,2025-09-29], [user:PeruvianCartel,2025-09-29], [user:platter,2025-09-29], [user:rqi,2025-09-29], [user:Sana,2025-09-29], [user:sqwiijqk,2025-09-29], [user:Sugar_fan,2025-09-29], [user:tfg,2025-09-29], [user:ttamx,2025-09-29], [user:Waldi,2025-09-29], [user:we12223,2025-09-29], [user:wizardrabbit,2025-09-29] for great testing.↵
- [user:MikeMirzayanov,2025-09-29] and [user:KAN,2025-09-29] for the great platforms.↵
- You for participating!↵
↵
[As some of you may know](https://mirror.codeforces.com/team/185841), this contest originates from my promise to [hold a Codeforces round if T1 wins a World Championship](https://mirror.codeforces.com/blog/entry/96740?#comment-971125), which they did win afterwards in [2023](https://mirror.codeforces.com/blog/entry/122451) and [2024](https://mirror.codeforces.com/blog/entry/135831). This contest is dedicated to the T1 League of Legends team, and each problem will feature the members of their roster following the 2023 season. They are the sole reason for this project, so I want to extend my thanks to them and wish them the best of luck in their 2025 run! For those who are unfamiliar with the game, don't worry, as the problem statements are written neutrally anyway.↵
↵
Score distribution is $500 + 1500 + 1500 + 2500 + 3000 + 4000 + 4000 + (4000 + 2500)$.↵
↵
Now, a few words from our sponsor!↵
↵
<img src="/predownloaded/30/c1/30c15a0c8c63e9c499187c829944ad496103f599.jpg" style="width:300px;float:right;margin:0 1em 1em 1em;"/>↵
↵
_We are proud to support this competition and the talented participants who represent the future of our industry._↵
↵
_[Squarepoint Capital](https://www.squarepoint-capital.com/) is a global investment management firm with headquarters in **New York City** and **London**, and offices around the world. The firm is known for its **quantitative finance approach to investing**._↵
↵
_**Igor Melnikov**, Two-time winner of the All-Russian Mathematical Olympiad, First Prize at IMC in university, shares his insights on working at Squarepoint Capital:_↵
↵
_"At Squarepoint, I'm surrounded by a team of exceptional individuals who share my passion for mathematics and competitive programming. As a winner of the National Olympiads in mathematics and an IMC medalist, I'm in good company — many of my colleagues have also participated in and won awards at national and international Olympiads. With a strong presence of Olympiad participants and medalists on our team, we bring a unique combination of mathematical rigor and problem-solving expertise to our work, and I'm excited to be a part of such a talented and driven team."_↵
↵
_Squarepoint is actively hiring!_↵
_If you have a background in **engineering, computer science, mathematics, statistics, econometrics, financial engineering, operations research, or physics**, and you’re proficient in at least one major programming or scripting language — this could be your opportunity._↵
↵
<center style="margin: 1em 1.5em;">↵
<a href="https://mirror.codeforces.com/userForm/a9856f1e501db2e0" style="font-size: 16.0px;padding: 10.0px 16.0px;background-color: #9fcced;color: black;">Apply here →</a>↵
</center>↵
↵
🎁 **Prizes:**↵
↵
- **Top 5 performers** _will receive a **$300 Amazon voucher** each._↵
- **Next 10 highest scorers** _will receive a **$50 Amazon voucher** each._↵
↵
_Good luck, and happy coding!_↵
↵
**UPD**: Thanks to everyone for participating! The editorial is [here](https://mirror.codeforces.com/blog/entry/146988). ↵
↵
Top 15:↵
↵
1. [user:Nachia,2025-10-03]↵
2. [user:qiuzx,2025-10-03]↵
3. [user:BurnedChicken,2025-10-03]↵
4. [user:Kevin114514,2025-10-03]↵
5. [user:jiangly,2025-10-03]↵
6. [user:tourist,2025-10-03]↵
7. [user:strapple,2025-10-03]↵
8. [user:ksun48,2025-10-03]↵
9. [user:Otomachi_Una,2025-10-03]↵
10. [user:VivaciousAubergine,2025-10-03]↵
11. [user:Dominater069,2025-10-03]↵
12. [user:ecnerwala,2025-10-03]↵
13. [user:__builtin_gjr,2025-10-03]↵
14. [user:tiger2005,2025-10-03]↵
15. [user:Amoo_Safar,2025-10-03]↵
↵
We invite you to participate in [contest:2152], which will be held on [contest_time:2152].↵
↵
The round will be **rated for everyone**. You will be given **8 problems**, one of which is divided into two subtasks, and **3 hours** to solve them. One of the problems will be interactive, so make sure to read the [guide for interactive problems](https://mirror.codeforces.com/blog/entry/45307) before the contest.↵
↵
The problems are authored and prepared by [user:as_dfsdf,2025-09-29], [user:djm03178,2025-09-29], [user:ko_osaga,2025-09-29], and [user:qwerasdfzxcl,2025-09-29].↵
↵
We would like to thank:↵
↵
- [user:errorgorn,2025-09-29] for great coordination.↵
- [user:Alexdat2000,2025-09-29] for great Russian translation.↵
- [user:Adam_GS,2025-09-29], [user:ainta,2025-09-29], [user:bangan,2025-09-29], [user:BuzzyBeez,2025-09-29], [user:cookiedoth,2025-09-29], [user:Dragos,2025-09-29], [user:gamegame,2025-09-29], [user:garam1732,2025-09-29], [user:Geothermal,2025-09-29], [user:gs20036,2025-09-29], [user:harshith_04,2025-09-29], [user:hiroi_kikuri,2025-09-29], [user:kENN3N,2025-09-29], [user:madlogic,2025-09-29], [user:madtreap,2025-09-29], [user:maomao90,2025-09-29], [user:mathjuny,2025-09-29], [user:MEDAA,2025-09-29], [user:mujigae,2025-09-29], [user:nikolashami,2025-09-29], [user:Pacybwoah,2025-09-29], [user:PeruvianCartel,2025-09-29], [user:platter,2025-09-29], [user:rqi,2025-09-29], [user:Sana,2025-09-29], [user:sqwiijqk,2025-09-29], [user:Sugar_fan,2025-09-29], [user:tfg,2025-09-29], [user:ttamx,2025-09-29], [user:Waldi,2025-09-29], [user:we12223,2025-09-29], [user:wizardrabbit,2025-09-29] for great testing.↵
- [user:MikeMirzayanov,2025-09-29] and [user:KAN,2025-09-29] for the great platforms.↵
- You for participating!↵
↵
[As some of you may know](https://mirror.codeforces.com/team/185841), this contest originates from my promise to [hold a Codeforces round if T1 wins a World Championship](https://mirror.codeforces.com/blog/entry/96740?#comment-971125), which they did win afterwards in [2023](https://mirror.codeforces.com/blog/entry/122451) and [2024](https://mirror.codeforces.com/blog/entry/135831). This contest is dedicated to the T1 League of Legends team, and each problem will feature the members of their roster following the 2023 season. They are the sole reason for this project, so I want to extend my thanks to them and wish them the best of luck in their 2025 run! For those who are unfamiliar with the game, don't worry, as the problem statements are written neutrally anyway.↵
↵
Score distribution is $500 + 1500 + 1500 + 2500 + 3000 + 4000 + 4000 + (4000 + 2500)$.↵
↵
Now, a few words from our sponsor!↵
↵
<img src="/predownloaded/30/c1/30c15a0c8c63e9c499187c829944ad496103f599.jpg" style="width:300px;float:right;margin:0 1em 1em 1em;"/>↵
↵
_We are proud to support this competition and the talented participants who represent the future of our industry._↵
↵
_[Squarepoint Capital](https://www.squarepoint-capital.com/) is a global investment management firm with headquarters in **New York City** and **London**, and offices around the world. The firm is known for its **quantitative finance approach to investing**._↵
↵
_**Igor Melnikov**, Two-time winner of the All-Russian Mathematical Olympiad, First Prize at IMC in university, shares his insights on working at Squarepoint Capital:_↵
↵
_"At Squarepoint, I'm surrounded by a team of exceptional individuals who share my passion for mathematics and competitive programming. As a winner of the National Olympiads in mathematics and an IMC medalist, I'm in good company — many of my colleagues have also participated in and won awards at national and international Olympiads. With a strong presence of Olympiad participants and medalists on our team, we bring a unique combination of mathematical rigor and problem-solving expertise to our work, and I'm excited to be a part of such a talented and driven team."_↵
↵
_Squarepoint is actively hiring!_↵
_If you have a background in **engineering, computer science, mathematics, statistics, econometrics, financial engineering, operations research, or physics**, and you’re proficient in at least one major programming or scripting language — this could be your opportunity._↵
↵
<center style="margin: 1em 1.5em;">↵
<a href="https://mirror.codeforces.com/userForm/a9856f1e501db2e0" style="font-size: 16.0px;padding: 10.0px 16.0px;background-color: #9fcced;color: black;">Apply here →</a>↵
</center>↵
↵
🎁 **Prizes:**↵
↵
- **Top 5 performers** _will receive a **$300 Amazon voucher** each._↵
- **Next 10 highest scorers** _will receive a **$50 Amazon voucher** each._↵
↵
_Good luck, and happy coding!_↵
↵
**UPD**: Thanks to everyone for participating! The editorial is [here](https://mirror.codeforces.com/blog/entry/146988). ↵
↵
Top 15:↵
↵
1. [user:Nachia,2025-10-03]↵
2. [user:qiuzx,2025-10-03]↵
3. [user:BurnedChicken,2025-10-03]↵
4. [user:Kevin114514,2025-10-03]↵
5. [user:jiangly,2025-10-03]↵
6. [user:tourist,2025-10-03]↵
7. [user:strapple,2025-10-03]↵
8. [user:ksun48,2025-10-03]↵
9. [user:Otomachi_Una,2025-10-03]↵
10. [user:VivaciousAubergine,2025-10-03]↵
11. [user:Dominater069,2025-10-03]↵
12. [user:ecnerwala,2025-10-03]↵
13. [user:__builtin_gjr,2025-10-03]↵
14. [user:tiger2005,2025-10-03]↵
15. [user:Amoo_Safar,2025-10-03]↵
