Training Materials (2025)

Level A

Week 6 (8 Feb 2025)

Competitive Programming, Big-O

Week 7 (15 Feb 2025)

Dynamic Programming (II)

Week 8 (22 Feb 2025)

Graph (III)

Week 9 (1 Mar 2025)

Data Structures (IV)

Week 10 (8 Mar 2025)

Graph (IV)

Week 11 (15 Mar 2025)

Dynamic Programming (III)

Week 12 (22 Mar 2025)

Graph (V)

Week 13 (29 Mar 2025)

Flow and Graph Matching (I)

Week 14 (5 Apr 2025)

Flow and Graph Matching (II)

Level B

Week 6 (8 Feb 2025)

N/A

Week 7 (15 Feb 2025)

Programming in C++

Week 8 (22 Feb 2025)

Optimization

Week 9 (1 Mar 2025)

Graph (I)

Week 10 (8 Mar 2025)

Mathematics in OI (I)

Week 11 (15 Mar 2025)

Data Structures (II)

Week 12 (22 Mar 2025)

Dynamic Programming (I)

Week 13 (29 Mar 2025)

Graph (II)

Week 14 (5 Apr 2025)

Data Structures (III)

PM Sessions

Week 6 (8 Feb 2025)

Solution to HKOI 2024/25 –

• S251 Path of Fortune
• S252 Digit Puzzle
• S253 Miles Away
• S254 Faultline of the Earthquake
• J251 Spelling Bee
• J252 Dual-Election
• J253 Tournament II
• J254 Wandering Around the Garden

Solution to HKGOI 2024/25 –

• G251 Diploma Checker
• G252 Maths or Music?
• G253 Navigation
• G254 Pyramidal Sequence
• G255 Gerrymandering
• G256 Smart Reservoir

Week 7 (15 Feb 2025)

Introduction to Linux / Exercises

Week 8 (22 Feb 2025)

Constructive Algorithms, Special Tasks (I)

Week 10 (8 Mar 2025)

Constructive Algorithms, Special Tasks (II)

Week 12 (22 Mar 2025)

MIPS and Computer Architecture

Week 14 (5 Apr 2025)

Mathematics in OI (II)

Week 17 (26 Apr 2025)

Misc Problem Discussion
TFT Contest Environment Tips

Contest Materials

Mini Competition 0 (14 Feb 2025)

Editorial

Mini Competition 1 (1 Mar 2025)

Editorial

Mini Competition (Teams) (15 Mar 2025)

Editorial

Mini Competition 2 (29 Mar 2025)

Editorial

Mini Competition 3 (12 Apr 2025)

Editorial

EGOI Team Formation Test (3 May 2025)

Linear Zoo
Sliding Crates
Highway Reversal
Grand School Award