Problems
| Problem | Category | Types | Points | AC % ▴ | Users | |
|---|---|---|---|---|---|---|
| IOI '19 P1 - Arranging Shoes | IOI | Data Structures, Greedy Algorithms | 15p | 16.4% | 136 | |
| IOI '02 P1 - The Troublesome Frog | IOI | Uncategorized | 15p | 16.5% | 78 | |
| IOI '12 P6 - Jousting Tournament (Standard I/O) | IOI | Data Structures | 17p | 16.7% | 12 | |
| IOI '01 P3 - Twofive | IOI | Ad Hoc | 25p | 16.8% | 64 | |
| IOI '09 P8 - Salesman | IOI | Data Structures, Dynamic Programming | 25p | 16.8% | 133 | |
| IOI '12 P3 - Crayfish Scrivener (Standard I/O) | IOI | Data Structures | 15p | 16.8% | 276 | |
| IOI '04 P6 - Empodia | IOI | Uncategorized | 30p | 16.9% | 140 | |
| IOI '17 P3 - Toy Train | IOI | Ad Hoc | 30p | 17.3% | 40 | |
| IOI '03 P2 - Comparing Code | IOI | Uncategorized | 25p | 17.6% | 32 | |
| IOI '16 P5 - Unscrambling a Messy Bug | IOI | Divide and Conquer, Interactive | 20p | 17.7% | 65 | |
| IOI '00 P2 - Car Parking | IOI | Uncategorized | 15p | 17.7% | 53 | |
| IOI '14 P5 - Friend (Standard I/O) | IOI | Ad Hoc | 30p | 18.2% | 189 | |
| IOI '10 P6 - Traffic Congestion | IOI | Graph Theory | 10p | 18.2% | 94 | |
| IOI '11 P3 - Rice Hub | IOI | Greedy Algorithms, Simple Math | 15p | 18.2% | 125 | |
| IOI '13 P5 - Robots | IOI | Ad Hoc | 20p | 18.3% | 90 | |
| IOI '13 P1 - Dreaming (Standard I/O) | IOI | Graph Theory | 15p | 18.4% | 532 | |
| IOI '00 P1 - Palindrome | IOI | Dynamic Programming | 10p | 18.5% | 830 | |
| IOI '11 P2 - Race | IOI | Graph Theory | 17p | 18.6% | 212 | |
| IOI '15 P5 - Sorting (Standard I/O) | IOI | Ad Hoc | 25p | 18.6% | 186 | |
| IOI '13 P4 - Cave | IOI | Divide and Conquer, Interactive | 10p | 18.6% | 311 | |
| IOI '94 P2 - The Castle | IOI | Graph Theory, Implementation | 10 | 18.8% | 127 | |
| IOI '11 P4 - Crocodile's Underground City (Standard I/O) | IOI | Graph Theory | 17p | 19.1% | 374 | |
| IOI '11 P3 - Rice Hub (Standard I/O) | IOI | Greedy Algorithms, Simple Math | 15p | 19.4% | 496 | |
| IOI '08 P1 - Type Printer | IOI | String Algorithms | 12p | 20.0% | 409 | |
| IOI '96 P5 - Longest Prefix | IOI | Dynamic Programming | 12 | 20.8% | 112 | |
| IOI '05 P2 - Mean Sequence | IOI | Intermediate Math | 12p | 20.8% | 270 | |
| IOI '07 P4 - Miners | IOI | Dynamic Programming | 15p | 21.2% | 444 | |
| IOI '07 P3 - Sails | IOI | Data Structures | 25p | 21.4% | 210 | |
| IOI '05 P1 - Garden | IOI | Dynamic Programming | 20p | 21.7% | 252 | |
| IOI '95 Practice Task 1 - Fence Factory | IOI | Uncategorized | 15p | 21.7% | 10 | |
| IOI '15 P5 - Sorting | IOI | Ad Hoc | 25p | 21.8% | 71 | |
| IOI '99 P5 - Flatten | IOI | Uncategorized | 15p | 21.8% | 16 | |
| IOI '12 P5 - Last Supper | IOI | Ad Hoc, Interactive | 30p | 21.9% | 6 | |
| IOI '06 P4 - The Valley of Mexico | IOI | Dynamic Programming | 15p | 22.0% | 214 | |
| IOI '06 P2 - Pyramid | IOI | Data Structures | 17p | 22.5% | 218 | |
| IOI '18 P4 - Mechanical Doll | IOI | Ad Hoc, Graph Theory | 20p | 22.6% | 13 | |
| IOI '13 P1 - Dreaming | IOI | Graph Theory | 15p | 22.9% | 229 | |
| IOI '10 P5 - Memory | IOI | Implementation, Interactive | 5p | 23.1% | 136 | |
| IOI '04 P2 - Hermes | IOI | Uncategorized | 15p | 23.5% | 188 | |
| IOI '96 P3 - Network of Schools | IOI | Graph Theory | 12p | 23.7% | 83 | |
| IOI '18 P3 - Werewolf | IOI | Ad Hoc | 30p | 24.0% | 57 | |
| IOI '95 P5 - Street Race | IOI | Uncategorized | 15p | 24.1% | 39 | |
| IOI '02 P2 - Utopia Divided | IOI | Uncategorized | 20p | 24.5% | 91 | |
| IOI '14 P2 - Wall | IOI | Data Structures | 20p | 24.7% | 211 | |
| IOI '18 P2 - Seats | IOI | Data Structures | 40p | 25.0% | 7 | |
| IOI '22 P4 - Digital Circuit | IOI | Data Structures, Graph Theory | 25p | 25.2% | 25 | |
| IOI '14 P5 - Friend | IOI | Ad Hoc | 30p | 26.2% | 99 | |
| IOI '95 P4 - Letter Game | IOI | Uncategorized | 15p | 26.9% | 33 | |
| IOI '94 P4 - The Clocks | IOI | Implementation | 10 | 27.2% | 121 | |
| IOI '01 P1 - Mobile Phones | IOI | Data Structures | 15p | 27.5% | 704 |