Problems
| Problem | Category | Types | Points | AC % | Users ▾ | |
|---|---|---|---|---|---|---|
| IOI '15 P6 - Towns | IOI | Ad Hoc, Graph Theory | 40p | 15.5% | 59 | |
| IOI '98 P1 - Contact | IOI | Data Structures | 10p | 8.9% | 58 | |
| IOI '17 P4 - The Big Prize | IOI | Interactive | 20p | 10.5% | 57 | |
| IOI '18 P3 - Werewolf | IOI | Ad Hoc | 30p | 24.1% | 57 | |
| IOI '17 P2 - Wiring | IOI | Ad Hoc | 25p | 15.5% | 56 | |
| IOI '14 Practice Task 3 - Tile | IOI | Divide and Conquer | 10p | 28.0% | 55 | |
| IOI '16 P4 - Paint by Numbers | IOI | Ad Hoc | 15p | 12.4% | 54 | |
| IOI '09 P7 - Regions | IOI | Graph Theory, Interactive | 20p | 11.8% | 54 | |
| IOI '95 Practice Task 2 - Word Chains | IOI | Data Structures | 12 | 43.9% | 54 | |
| IOI '20 P2 - Connecting Supertrees | IOI | Graph Theory | 15p | 13.8% | 54 | |
| IOI '96 P2 - Job Processing | IOI | Uncategorized | 20p | 29.5% | 53 | |
| IOI '00 P2 - Car Parking | IOI | Uncategorized | 15p | 17.7% | 53 | |
| IOI '02 P5 - Bus Terminals | IOI | Ad Hoc | 30p | 14.8% | 53 | |
| IOI '98 P5 - Camelot | IOI | Uncategorized | 15p | 40.6% | 51 | |
| IOI '14 Practice Task 2 - Station | IOI | Greedy Algorithms | 7p | 57.9% | 50 | |
| IOI '14 P1 - Rail | IOI | Interactive | 30p | 10.7% | 47 | |
| IOI '22 P1 - Catfish Farm | IOI | Data Structures, Dynamic Programming | 25p | 8.1% | 44 | |
| IOI '95 P2 - Shopping Offers | IOI | Uncategorized | 15p | 27.5% | 42 | |
| IOI '11 P5 - Dancing Elephants | IOI | Data Structures | 40p | 10.3% | 41 | |
| IOI '17 P3 - Toy Train | IOI | Ad Hoc | 30p | 17.3% | 40 | |
| IOI '95 P5 - Street Race | IOI | Uncategorized | 15p | 24.1% | 39 | |
| IOI '01 P6 - Depot | IOI | Uncategorized | 30p | 12.1% | 39 | |
| IOI '13 P3 - Wombats | IOI | Data Structures, Graph Theory | 40p | 13.2% | 38 | |
| IOI '03 P5 - Amazing Robots | IOI | Uncategorized | 20 | 11.4% | 38 | |
| IOI '11 P1 - Tropical Garden | IOI | Graph Theory | 25p | 15.2% | 37 | |
| IOI '09 P1 - Archery | IOI | Ad Hoc, Simulation | 45p | 13.4% | 37 | |
| IOI '15 P3 - Teams (Standard I/O) | IOI | Ad Hoc | 35p | 3.4% | 37 | |
| IOI '20 P3 - Carnival Tickets | IOI | Ad Hoc, Greedy Algorithms | 20p | 11.8% | 37 | |
| IOI '16 P2 - Roller Coaster Railroad | IOI | Ad Hoc, Graph Theory | 35p | 45.1% | 35 | |
| IOI '15 P3 - Teams | IOI | Ad Hoc | 35p | 8.8% | 34 | |
| IOI '99 P6 - A Strip of Land | IOI | Uncategorized | 20p | 13.4% | 34 | |
| IOI '19 P5 - Vision Program | IOI | Ad Hoc, Interactive | 20p | 8.2% | 33 | |
| IOI '95 P4 - Letter Game | IOI | Uncategorized | 15p | 26.9% | 33 | |
| IOI '03 P2 - Comparing Code | IOI | Uncategorized | 25p | 17.6% | 32 | |
| IOI '17 P6 - Ancient Books | IOI | Ad Hoc | 25p | 11.4% | 29 | |
| IOI '21 P1 - Distributing Candies | IOI | Data Structures | 30p | 13.4% | 29 | |
| IOI '98 P2 - Starry Night | IOI | Uncategorized | 15 | 41.3% | 28 | |
| IOI '99 P4 - Traffic Lights | IOI | Uncategorized | 15 | 31.1% | 28 | |
| IOI '19 P2 - Split the Attractions | IOI | Graph Theory | 40p | 5.1% | 26 | |
| IOI '95 P1 - Packing Rectangles | IOI | Uncategorized | 15p | 45.3% | 26 | |
| IOI '19 P3 - Rectangles | IOI | Data Structures | 30p | 6.9% | 25 | |
| IOI '16 P2 - Roller Coaster Railroad (Standard I/O) | IOI | Ad Hoc, Graph Theory | 35p | 12.5% | 25 | |
| IOI '22 P2 - Prisoner Challenge | IOI | Ad Hoc | 25p | 8.2% | 25 | |
| IOI '22 P4 - Digital Circuit | IOI | Data Structures, Graph Theory | 25p | 25.2% | 25 | |
| IOI '12 P2 - Parachute Rings | IOI | Graph Theory | 25p | 15.3% | 24 | |
| IOI '15 P2 - Scales | IOI | Ad Hoc | 25p | 6.8% | 23 | |
| IOI '95 Practice Task 3 - Bar Codes | IOI | Dynamic Programming | 12p | 35.4% | 23 | |
| IOI '20 P6 - Stations | IOI | Ad Hoc, Graph Theory | 20p | 14.5% | 22 | |
| IOI '07 P1 - Aliens | IOI | Interactive | 12p | 15.3% | 21 | |
| IOI '22 P5 - Rarest Insects | IOI | Ad Hoc, Interactive | 30p | 5.0% | 21 |