Selamat siang, Codeforces!

We are excited to invite you to the mirror of BNPC-HS Final Round!

BNPC-HS (Bina Nusantara Programming Contest for High School Students) is an annual competitive programming competition hosted by BINUS University as part of BeeFest, a national-level competition for high school students. This contest is mirrored from the problemset of the Final Round of BNPC-HS 2025, and is open for everyone to join (not limited to high school students)!

Key details:

• Rated for all

• Contest links: TLX

• Time: Sunday, October 19, 2025 at 04:05 UTC

• Duration: 4 hours

• Problems: 10

• Allowed languages: C, C++11, C++17, C++20, Pascal, Java, Python 3, Go, Rust

• Contest style: ICPC

  • Penalty per wrong submission: 15 minutes
  • The scoreboard will be frozen 60 minutes before the end of the contest, and unfrozen soon after the contest ends.

• Available Languages: English, Bahasa Indonesia

• Writers: Alstonton, bonk, Chrisedyong, Drakozs, Chiz, chpp, Michael_H, Owmicron, Ngeces, Twits, undev, Yoshiyuki, Zanite

We would like to thank:

• ClairObscur, Nevll, Twits, rfpermen, and takeonicky for testing the problems and giving splendid feedback.
• AVM.Martin, saul, undev, and Vorbunny as the technical committee of BNPCHS 2025.
• fushar for the marvelous TLX platform.

Please register for the contest and we encourage you to read all problems! We hope you enjoy the mirror!

UPD: Contest is over!

Congratulations to our top 5:

1. maspy
2. potato167
3. Rubikun
4. Kude
5. physics0523

Congratulations to our first solvers:

G: Rubikun
H: potato167
I: Rubikun
J: maspy
K: maspy
L: kioanandamath
M: potato167
N: maspy
O: potato167
P: potato167

You can upsolve the problems here.

Editorial is available in the upsolve link.

Thank you for participating and see you on the next contest!