Problems
| Problem | Category | Types | Points | AC % ▾ | Users | |
|---|---|---|---|---|---|---|
| IOI '14 P6 - Holiday | IOI | Ad Hoc | 30 | 15.9% | 82 | |
| IOI '05 P4 - Birthday | IOI | Implementation | 12p | 15.7% | 141 | |
| IOI '15 P6 - Towns | IOI | Ad Hoc, Graph Theory | 40p | 15.5% | 59 | |
| IOI '17 P2 - Wiring | IOI | Ad Hoc | 25p | 15.5% | 56 | |
| IOI '12 P2 - Parachute Rings | IOI | Graph Theory | 25p | 15.3% | 24 | |
| IOI '07 P1 - Aliens | IOI | Interactive | 12p | 15.3% | 21 | |
| IOI '11 P2 - Race (Standard I/O) | IOI | Graph Theory | 17p | 15.2% | 529 | |
| IOI '11 P1 - Tropical Garden | IOI | Graph Theory | 25p | 15.2% | 37 | |
| IOI '18 P1 - Combo | IOI | Interactive | 15p | 15.0% | 179 | |
| IOI '13 P5 - Robots (Standard I/O) | IOI | Ad Hoc | 20p | 15.0% | 278 | |
| IOI '02 P5 - Bus Terminals | IOI | Ad Hoc | 30p | 14.8% | 53 | |
| IOI '09 P6 - Mecho | IOI | Graph Theory | 15 | 14.8% | 324 | |
| IOI '20 P6 - Stations | IOI | Ad Hoc, Graph Theory | 20p | 14.5% | 22 | |
| IOI '99 P2 - Hidden Codes | IOI | Uncategorized | 20p | 14.4% | 10 | |
| IOI '16 P1 - Detecting Molecules (Standard I/O) | IOI | Greedy Algorithms | 12p | 14.1% | 230 | |
| IOI '20 P2 - Connecting Supertrees | IOI | Graph Theory | 15p | 13.8% | 54 | |
| IOI '21 P6 - Bit Shift Registers | IOI | Ad Hoc, Implementation, Interactive | 30p | 13.8% | 8 | |
| IOI '21 P1 - Distributing Candies | IOI | Data Structures | 30p | 13.4% | 29 | |
| IOI '09 P1 - Archery | IOI | Ad Hoc, Simulation | 45p | 13.4% | 37 | |
| IOI '20 P4 - Packing Biscuits | IOI | Dynamic Programming, Simple Math | 25p | 13.4% | 15 | |
| IOI '05 P3 - Mountain | IOI | Data Structures | 20p | 13.4% | 297 | |
| IOI '15 P1 - Boxes with Souvenirs | IOI | Ad Hoc | 15p | 13.4% | 98 | |
| IOI '99 P6 - A Strip of Land | IOI | Uncategorized | 20p | 13.4% | 34 | |
| IOI '04 P5 - Farmer | IOI | Uncategorized | 15p | 13.3% | 210 | |
| IOI '13 P3 - Wombats | IOI | Data Structures, Graph Theory | 40p | 13.2% | 38 | |
| IOI '97 P1 - Mars Explorer | IOI | Graph Theory | 20p | 12.8% | 16 | |
| IOI '08 P6 - Pyramid Base | IOI | Data Structures, Divide and Conquer | 40p | 12.7% | 7 | |
| IOI '16 P2 - Roller Coaster Railroad (Standard I/O) | IOI | Ad Hoc, Graph Theory | 35p | 12.5% | 25 | |
| IOI '16 P4 - Paint by Numbers | IOI | Ad Hoc | 15p | 12.4% | 54 | |
| IOI '14 P6 - Holiday (Standard I/O) | IOI | Ad Hoc | 30 | 12.3% | 133 | |
| IOI '01 P6 - Depot | IOI | Uncategorized | 30p | 12.1% | 39 | |
| IOI '17 P5 - Simurgh | IOI | Graph Theory | 40p | 12.1% | 16 | |
| IOI '18 P6 - Meetings | IOI | Data Structures | 35p | 12.0% | 10 | |
| IOI '16 P1 - Detecting Molecules | IOI | Greedy Algorithms | 12p | 11.8% | 155 | |
| IOI '11 P1 - Tropical Garden (Standard I/O) | IOI | Graph Theory | 25p | 11.8% | 166 | |
| IOI '09 P7 - Regions | IOI | Graph Theory, Interactive | 20p | 11.8% | 54 | |
| IOI '20 P3 - Carnival Tickets | IOI | Ad Hoc, Greedy Algorithms | 20p | 11.8% | 37 | |
| IOI '18 P5 - Highway Tolls | IOI | Graph Theory, Interactive | 30p | 11.7% | 14 | |
| IOI '12 P2 - Parachute Rings (Standard I/O) | IOI | Graph Theory | 25p | 11.5% | 111 | |
| IOI '17 P6 - Ancient Books | IOI | Ad Hoc | 25p | 11.4% | 29 | |
| IOI '15 P4 - Horses | IOI | Ad Hoc | 15p | 11.4% | 102 | |
| IOI '03 P5 - Amazing Robots | IOI | Uncategorized | 20 | 11.4% | 38 | |
| IOI '14 P4 - Gondola | IOI | Ad Hoc | 15p | 11.1% | 99 | |
| IOI '21 P2 - Keys | IOI | Graph Theory | 25p | 10.9% | 14 | |
| IOI '14 P1 - Rail | IOI | Interactive | 30p | 10.7% | 47 | |
| IOI '11 P5 - Dancing Elephants (Standard I/O) | IOI | Data Structures | 20p | 10.6% | 93 | |
| IOI '05 Practice Task 3 - Polish Flag | IOI | Uncategorized | 20p | 10.6% | 4 | |
| IOI '17 P4 - The Big Prize | IOI | Interactive | 20p | 10.5% | 57 | |
| IOI '08 P2 - Islands | IOI | Dynamic Programming, Graph Theory | 25p | 10.4% | 111 | |
| IOI '11 P5 - Dancing Elephants | IOI | Data Structures | 40p | 10.3% | 41 |