Training Materials (2026)

Level A

Week 7 (14 Feb 2026)

Competitive Programming, Big-O

Week 8 (21 Feb 2026)

Dynamic Programming (II)

Week 9 (28 Feb 2026)

Graph (III)

Week 10 (7 Mar 2026)

Data Structures (IV)

Week 11 (14 Mar 2026)

Graph (IV)

Level B

Week 7 (14 Feb 2026)

N/A

Week 8 (21 Feb 2026)

Programming in C++

Week 9 (28 Feb 2026)

Optimization

Week 10 (7 Mar 2026)

Data Structures (II)

Week 11 (14 Mar 2026)

Graph (I)

PM Sessions

Week 7 (14 Feb 2026)

Solution to HKOI 2025/26 –

• S261 Tribal Occupation
• S262 Even the Rhythm
• S263 Set
• S264 Triangular Territories
• J261 Cubic Date
• J262 Bowling Score Recovery
• J263 Spot-Check Debugging
• J264 Shy Students

Solution to HKGOI 2025/26 –

• G261 Sushi Go
• G262 Removing Letters
• G263 Screws
• G264 Infinite Whack-A-Mole
• G265 Mini Metro
• G266 Full Speed Ahead

Week 8 (21 Feb 2026)

Introduction to Linux

Week 9 (28 Feb 2026)

Constructive Algorithms, Special Tasks (I)

Week 11 (14 Mar 2026)

Constructive Algorithms, Special Tasks (II)

Contest Materials

Mini Competition 0 (14 Feb 2026)

Editorial

Mini Competition 1 (7 Mar 2026)

Editorial