Problems
| Problem | Category | Types | Points | AC % | Users ▾ | |
|---|---|---|---|---|---|---|
| IOI '23 P1 - Closing Time | IOI | Dynamic Programming, Graph Theory, Greedy Algorithms | 25p | 4.5% | 20 | |
| IOI '20 P1 - Comparing Plants | IOI | Ad Hoc, Data Structures | 40p | 6.4% | 17 | |
| IOI '97 P1 - Mars Explorer | IOI | Graph Theory | 20p | 12.8% | 16 | |
| IOI '17 P5 - Simurgh | IOI | Graph Theory | 40p | 12.1% | 16 | |
| IOI '11 P6 - Parrots | IOI | Ad Hoc, Interactive | 20p | 3.6% | 16 | |
| IOI '99 P5 - Flatten | IOI | Uncategorized | 15p | 21.8% | 16 | |
| IOI '12 P6 - Jousting Tournament | IOI | Data Structures | 17p | 16.4% | 16 | |
| IOI '16 P3 - Shortcut | IOI | Graph Theory | 40p | 9.0% | 15 | |
| IOI '20 P4 - Packing Biscuits | IOI | Dynamic Programming, Simple Math | 25p | 13.4% | 15 | |
| IOI '22 P3 - Radio Towers | IOI | Data Structures | 30p | 7.2% | 15 | |
| IOI '21 P2 - Keys | IOI | Graph Theory | 25p | 10.9% | 14 | |
| IOI '18 P5 - Highway Tolls | IOI | Graph Theory, Interactive | 30p | 11.7% | 14 | |
| IOI '08 P4 - Teleporters | IOI | Graph Theory, Greedy Algorithms | 25p | 30.2% | 13 | |
| IOI '18 P4 - Mechanical Doll | IOI | Ad Hoc, Graph Theory | 20p | 22.6% | 13 | |
| IOI '23 P2 - Longest Trip | IOI | Graph Theory, Interactive | 25p | 3.1% | 13 | |
| IOI '19 P6 - Sky Walking | IOI | Graph Theory | 40p | 9.6% | 12 | |
| IOI '12 P6 - Jousting Tournament (Standard I/O) | IOI | Data Structures | 17p | 16.7% | 12 | |
| IOI '12 P4 - Ideal City | IOI | Graph Theory | 25p | 27.7% | 12 | |
| IOI '23 P3 - Soccer Stadium | IOI | Dynamic Programming | 30p | 4.7% | 12 | |
| IOI '23 P5 - Overtaking | IOI | Data Structures | 25p | 6.1% | 11 | |
| IOI '18 P6 - Meetings | IOI | Data Structures | 35p | 12.0% | 10 | |
| IOI '95 Practice Task 1 - Fence Factory | IOI | Uncategorized | 15p | 21.7% | 10 | |
| IOI '99 P2 - Hidden Codes | IOI | Uncategorized | 20p | 14.4% | 10 | |
| IOI '04 P2 - Hermes (Hard) | IOI | Data Structures | 20p | 8.1% | 9 | |
| IOI '21 P5 - Dungeons Game | IOI | Ad Hoc, Graph Theory | 30p | 8.1% | 9 | |
| IOI '21 P6 - Bit Shift Registers | IOI | Ad Hoc, Implementation, Interactive | 30p | 13.8% | 8 | |
| IOI '01 P2 - Ioiwari Game | IOI | Game Theory | 12p | 34.5% | 7 | |
| IOI '18 P2 - Seats | IOI | Data Structures | 40p | 25.0% | 7 | |
| IOI '08 P6 - Pyramid Base | IOI | Data Structures, Divide and Conquer | 40p | 12.5% | 7 | |
| IOI '97 P3 - The Toxic iShongololo | IOI | Uncategorized | 20p | 47.5% | 7 | |
| IOI '00 P6 - Building with Blocks | IOI | Uncategorized | 20p | 6.6% | 7 | |
| IOI '16 P3 - Shortcut (Standard I/O) | IOI | Graph Theory | 40p | 1.8% | 7 | |
| IOI '21 P3 - Fountain Parks | IOI | Ad Hoc | 30p | 4.8% | 7 | |
| IOI '12 P4 - Ideal City (Standard I/O) | IOI | Graph Theory | 25p | 46.7% | 6 | |
| IOI '12 P5 - Last Supper | IOI | Ad Hoc, Interactive | 30p | 21.9% | 6 | |
| IOI '22 P6 - Thousands Islands | IOI | Ad Hoc, Graph Theory | 30p | 3.1% | 6 | |
| IOI '19 P4 - Broken Line | IOI | Ad Hoc | 35p | 2.3% | 4 | |
| IOI '05 Practice Task 3 - Polish Flag | IOI | Uncategorized | 20p | 10.6% | 4 | |
| IOI '12 P1 - Pebbling Odometer | IOI | Ad Hoc, Implementation | 30p | 2.9% | 4 | |
| IOI '10 P2 - Hotter Colder | IOI | Interactive | 20 | 0.5% | 3 | |
| IOI '97 P4 - Map Labelling | IOI | Uncategorized | 20p | 53.2% | 3 | |
| IOI '20 P5 - Counting Mushrooms | IOI | Ad Hoc, Interactive | 35p | 2.5% | 3 | |
| IOI '23 P4 - Beech Tree | IOI | Data Structures, Graph Theory | 35p | 4.9% | 3 | |
| IOI '23 P6 - Robot Contest | IOI | Ad Hoc | 40p | 3.4% | 2 | |
| IOI '04 P3 - Polygon | IOI | Geometry | 20p | 3.1% | 1 | |
| IOI '17 P1 - Nowruz | IOI | Graph Theory | 20p | 0.0% | 0 | |
| IOI '10 P7 - Maze | IOI | Graph Theory | 25p | 0.0% | 0 |