Thanks to everyone who participated in the Fall 2026 PHSCO! Almost 50 teams participated across both divisions, which is once again a new record, and I hope that all (or at least a majority) of the problems were enjoyable and thought-provoking.

First of all, a big shoutout to everyone who helped with preparation of this contest:

• Problems were written and prepared by me, William Park (pilliamw)
• Problems were tested by r_skk, CarViz, ekans_, shakArora, and rpt_1196
• Problems were proofread for readability by Nicole Sabova and Brooke Yin
• Logo & announcement banner art was drawn by Brooke Yin
  • Here at PHSCO, we're committed to using only human-drawn art. None of our art assets are generated by AI!
• Prize pool sponsored by the Poolesville HS Science, Math, and Computer Science magnet program

Anyways, without further ado, congratulations to all of the winners in each prize pool! Please check your emails for prizes, which should be sent out within the day. (If you haven't received any emails or messages regarding prize payment, please contact me!)

Standard Division (Pre-College):

• 1st — Giorgi Tskitishvili (ckitoyiyliyo) — Komarovi
• 2nd — slower than python — Hung Truong, Mekhi Burgess (lu2m1n, khininja) — Edmond North High School
• 3rd — Chicken Banana — Faraz Soomro, Muhammad Ishaq (Faraz, M-I) — SundarSTEM School

Advanced Division (Pre-College):

• 1st — tranhaian's students — Dương Phạm Minh Quang, Doan Tung Lam (conqueror_of_tranhaian, ballss) — THCS – THPT Newton
• 2nd — raising club funds — Aidan Bai, Yao Ye (2-qiym, RninverseC) — Canyon Crest Academy
• 3rd — Nathan Yan fanclub — Trong Nhan Vo, Austin Uezu (theoneandonlytron, KnownAsJason) — Palo Alto High School, Iolani
• 4th — OsmanOsmanOsman — Elay Verdiyev, Huseyn Nadirli (ElayV1313, tourist1331) — FRITL
• 5th — ballss and his balls — Dinh Huu Bao Nam, Le Nam Phong (dinhhuubaonam123, wrusb) — Pascal Secondary School, Newton Grammar School

Advanced Division (Global):

• 1st — bwaaa — Edward Huang, Aatu Kajasto (reirugan, turska)
• 2nd — tranhaian's students — Dương Phạm Minh Quang, Doan Tung Lam (conqueror_of_tranhaian, ballss) — THCS – THPT Newton
• 3rd — raising club funds — Aidan Bai, Yao Ye (2-qiym, RninverseC) — Canyon Crest Academy

Editorials for each problem will be posted below shortly. Anyone can access and submit to the contest problems for practice via the public group link.

We hope to see you again in future PHSCOs. Until next time, onwards and upwards! — pilliamw

Contest Feedback

(Editorials will be posted here shortly.)