Problems
| Problem | Category | Types | Points | AC % | Users | |
|---|---|---|---|---|---|---|
| IOI '95 P5 - Street Race | IOI | Uncategorized | 15p | 24.5% | 40 | |
| IOI '95 Practice Task 1 - Fence Factory | IOI | Uncategorized | 15p | 21.7% | 10 | |
| IOI '95 Practice Task 2 - Word Chains | IOI | Data Structures | 12 | 44.2% | 55 | |
| IOI '95 Practice Task 3 - Bar Codes | IOI | Dynamic Programming | 12p | 36.6% | 24 | |
| IOI '96 P1 - A Game | IOI | Dynamic Programming, Game Theory | 10 | 39.2% | 274 | |
| IOI '96 P2 - Job Processing | IOI | Uncategorized | 20p | 30.1% | 54 | |
| IOI '96 P3 - Network of Schools | IOI | Graph Theory | 12p | 23.7% | 83 | |
| IOI '96 P4 - Sorting a Three-Valued Sequence | IOI | Constructive, Greedy Algorithms | 10 | 32.1% | 145 | |
| IOI '96 P5 - Longest Prefix | IOI | Dynamic Programming | 12 | 21.1% | 114 | |
| IOI '97 P1 - Mars Explorer | IOI | Graph Theory | 20p | 12.8% | 16 | |
| IOI '97 P3 - The Toxic iShongololo | IOI | Uncategorized | 20p | 45.3% | 7 | |
| IOI '97 P4 - Map Labelling | IOI | Uncategorized | 20p | 56.0% | 5 | |
| IOI '98 P1 - Contact | IOI | Data Structures | 10p | 9.3% | 59 | |
| IOI '98 P2 - Starry Night | IOI | Uncategorized | 15 | 34.8% | 29 | |
| IOI '98 P3 - Party Lamps | IOI | Ad Hoc | 12p | 34.3% | 170 | |
| IOI '98 P4 - Picture | IOI | Geometry | 15p | 30.9% | 225 | |
| IOI '98 P5 - Camelot | IOI | Uncategorized | 15p | 40.9% | 52 | |
| IOI '98 P6 - Polygon | IOI | Dynamic Programming | 15 | 31.9% | 62 | |
| IOI '99 P1 - Little Shop of Flowers | IOI | Dynamic Programming | 10 | 30.5% | 210 | |
| IOI '99 P2 - Hidden Codes | IOI | Uncategorized | 20p | 14.4% | 10 | |
| IOI '99 P4 - Traffic Lights | IOI | Uncategorized | 15 | 30.9% | 29 | |
| IOI '99 P5 - Flatten | IOI | Uncategorized | 15p | 21.8% | 16 | |
| IOI '99 P6 - A Strip of Land | IOI | Uncategorized | 20p | 13.7% | 36 | |
| IOIQR P5 - Some Game | Seasonal | Ad Hoc | 25 | 3.5% | 3 | |
| Jack Needs Help | Uncategorized | Intermediate Math | 10p | 32.0% | 20 | |
| JOI '13 Open P2 - Synchronization | JOI | Graph Theory | 35p | 29.7% | 55 | |
| JOI '13 Open P3 - Watching | JOI | Dynamic Programming | 15p | 30.0% | 95 | |
| JOI '14 Open P1 - Factories | JOI | Data Structures, Graph Theory | 20p | 32.8% | 158 | |
| JOI '14 Open P2 - Fortune Telling 2 | JOI | Ad Hoc, Data Structures | 25p | 23.1% | 88 | |
| JOI '14 Open P3 - Space Pirate | JOI | Graph Theory | 50p | 1.4% | 1 | |
| JOI '14 Open P5 - Pinball | JOI | Data Structures, Dynamic Programming | 25p | 26.3% | 95 | |
| JOI '14 Open P6 - Secret | JOI | Interactive | 17p | 15.9% | 120 | |
| JOI '16 Final P1 - Foehn Phenomena | JOI | Data Structures, Simple Math | 10p | 68.1% | 24 | |
| JOI '16 Final P2 - Semiexpress | JOI | Greedy Algorithms, Simple Math | 12 | 54.8% | 17 | |
| JOI '16 Open P2 - Selling RNA Strands | JOI | Data Structures, String Algorithms | 20 | 16.8% | 18 | |
| JOI '16 Open P3 - Skyscraper | JOI | Dynamic Programming | 25p | 42.3% | 50 | |
| JOI '17 Final P4 - Commuter Pass | JOI | Graph Theory | 15 | 22.6% | 48 | |
| JOI '17 Final P5 - Snake Escaping | JOI | Data Structures, Intermediate Math | 25p | 36.4% | 14 | |
| JOI '18 Open P1 - Bubble Sort 2 | JOI | Data Structures | 20p | 5.3% | 28 | |
| JOI '18 Spring Camp Day 1 P1 - Construction of Highway | JOI | Data Structures, Graph Theory | 30p | 34.4% | 29 | |
| JOI '18 Spring Camp Day 1 P2 - Fences | JOI | Geometry, Graph Theory | 30p | 25.0% | 1 | |
| JOI '18 Spring Camp Day 1 P3 - Tents | JOI | Dynamic Programming, Intermediate Math | 20p | 62.1% | 32 | |
| JOI '19 Final P3 - Collecting Stamps 3 | JOI | Dynamic Programming | 15 | 25.7% | 40 | |
| JOI '19 Open P1 - Triple Jump | JOI | Data Structures | 30p | 26.1% | 16 | |
| JOI '19 Open P2 - Remittance | JOI | Intermediate Math | 30p | 23.8% | 12 | |
| JOI '19 Open P3 - Virus Experiment | JOI | Graph Theory | 35p | 8.3% | 3 | |
| JOI '20 Open P1 - Furniture | JOI | Ad Hoc | 20p | 34.8% | 8 | |
| JOI '20 Open P2 - Monochrome Points | JOI | Ad Hoc | 35p | 27.8% | 9 | |
| JOI '20 Open P3 - Power Plant | JOI | Dynamic Programming, Graph Theory | 15p | 39.0% | 27 | |
| JOI '20 Spring Camp Day 1 P3 - Sweeping | JOI | Ad Hoc | 25p | 18.2% | 2 |