Problems
| Problem | Category ▴ | Types | Points | AC % | Users | |
|---|---|---|---|---|---|---|
| IOI '05 P6 - Rivers | IOI | Dynamic Programming | 20p | 30.0% | 286 | |
| IOI '07 P4 - Miners | IOI | Dynamic Programming | 15p | 21.2% | 444 | |
| IOI '11 P6 - Parrots | IOI | Ad Hoc, Interactive | 20p | 3.6% | 16 | |
| IOI '11 P1 - Tropical Garden | IOI | Graph Theory | 25p | 15.3% | 38 | |
| IOI '18 P1 - Combo | IOI | Interactive | 15p | 15.0% | 179 | |
| IOI '18 P2 - Seats | IOI | Data Structures | 40p | 25.0% | 7 | |
| IOI '18 P3 - Werewolf | IOI | Ad Hoc | 30p | 24.0% | 57 | |
| IOI '18 P6 - Meetings | IOI | Data Structures | 35p | 12.0% | 10 | |
| IOI '09 P7 - Regions | IOI | Graph Theory, Interactive | 20p | 11.8% | 55 | |
| IOI '07 P1 - Aliens | IOI | Interactive | 12p | 15.3% | 21 | |
| IOI '08 P6 - Pyramid Base | IOI | Data Structures, Divide and Conquer | 40p | 12.5% | 7 | |
| IOI '08 P4 - Teleporters | IOI | Graph Theory, Greedy Algorithms | 25p | 30.2% | 13 | |
| IOI '05 P3 - Mountain | IOI | Data Structures | 20p | 13.4% | 299 | |
| IOI '05 P2 - Mean Sequence | IOI | Intermediate Math | 12p | 20.8% | 270 | |
| IOI '05 P4 - Birthday | IOI | Implementation | 12p | 15.7% | 141 | |
| IOI '19 P1 - Arranging Shoes | IOI | Data Structures, Greedy Algorithms | 15p | 16.4% | 136 | |
| IOI '19 P2 - Split the Attractions | IOI | Graph Theory | 40p | 5.1% | 26 | |
| IOI '19 P3 - Rectangles | IOI | Data Structures | 30p | 6.9% | 25 | |
| IOI '19 P6 - Sky Walking | IOI | Graph Theory | 40p | 9.6% | 12 | |
| IOI '19 P5 - Vision Program | IOI | Ad Hoc, Interactive | 20p | 8.2% | 33 | |
| IOI '19 P4 - Broken Line | IOI | Ad Hoc | 35p | 2.3% | 4 | |
| IOI '11 P4 - Crocodile's Underground City | IOI | Graph Theory | 17p | 28.4% | 87 | |
| IOI '09 P2 - Hiring | IOI | Uncategorized | 12p | 32.3% | 252 | |
| IOI '09 Practice Task 3 - Museum | IOI | Uncategorized | 15p | 48.5% | 72 | |
| IOI '09 P5 - Garage | IOI | Implementation | 7 | 46.4% | 532 | |
| IOI '09 P8 - Salesman | IOI | Data Structures, Dynamic Programming | 25p | 16.8% | 133 | |
| IOI '09 P3 - POI | IOI | Implementation | 7 | 28.7% | 528 | |
| IOI '09 P6 - Mecho | IOI | Graph Theory | 15 | 14.8% | 324 | |
| IOI '94 P2 - The Castle | IOI | Graph Theory, Implementation | 10 | 18.8% | 127 | |
| IOI '94 P4 - The Clocks | IOI | Implementation | 10 | 27.2% | 121 | |
| IOI '95 P4 - Letter Game | IOI | Uncategorized | 15p | 26.9% | 33 | |
| IOI '95 Practice Task 1 - Fence Factory | IOI | Uncategorized | 15p | 21.7% | 10 | |
| IOI '95 Practice Task 3 - Bar Codes | IOI | Dynamic Programming | 12p | 35.4% | 23 | |
| IOI '95 P5 - Street Race | IOI | Uncategorized | 15p | 24.1% | 39 | |
| IOI '95 P2 - Shopping Offers | IOI | Uncategorized | 15p | 27.5% | 42 | |
| IOI '95 Practice Task 2 - Word Chains | IOI | Data Structures | 12 | 43.9% | 54 | |
| IOI '95 P1 - Packing Rectangles | IOI | Uncategorized | 15p | 45.3% | 26 | |
| 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 | 31.9% | 142 | |
| IOI '96 P2 - Job Processing | IOI | Uncategorized | 20p | 29.5% | 53 | |
| IOI '96 P1 - A Game | IOI | Dynamic Programming, Game Theory | 10 | 39.2% | 270 | |
| IOI '96 P5 - Longest Prefix | IOI | Dynamic Programming | 12 | 20.8% | 112 | |
| IOI '97 P4 - Map Labelling | IOI | Uncategorized | 20p | 53.2% | 3 | |
| IOI '97 P3 - The Toxic iShongololo | IOI | Uncategorized | 20p | 47.5% | 7 | |
| IOI '98 P6 - Polygon | IOI | Dynamic Programming | 15 | 32.0% | 61 | |
| IOI '98 P5 - Camelot | IOI | Uncategorized | 15p | 40.6% | 51 | |
| IOI '98 P2 - Starry Night | IOI | Uncategorized | 15 | 41.3% | 28 | |
| IOI '98 P3 - Party Lamps | IOI | Ad Hoc | 12p | 34.0% | 168 | |
| IOI '99 P5 - Flatten | IOI | Uncategorized | 15p | 21.8% | 16 | |
| IOI '99 P2 - Hidden Codes | IOI | Uncategorized | 20p | 14.4% | 10 |