Problems
| Problem Name | Code | Points | Users | AC Rate | Date Added |
|---|---|---|---|---|---|
| IOI '07 - Training | ioi0723 | 40p | 46 | 23.16% | 2009-09-13 |
| IOI '08 Practice Task - Pyramid | ioi0803 | 50p | 0 | 0.00% | 2014-04-15 |
| IOI '08 - Type Printer | ioi0811 | 15p | 309 | 21.45% | 2009-12-19 |
| IOI '08 - Islands | ioi0812 | 30p | 116 | 6.36% | 2013-09-02 |
| IOI '08 - Fish | ioi0813 | 40p | 50 | 9.70% | 2013-09-02 |
| IOI '08 - Linear Garden | ioi0821 | 20p | 216 | 25.74% | 2010-06-02 |
| IOI '08 - Teleporters | ioi0822 | 20p | 104 | 23.43% | 2013-09-03 |
| IOI '08 - Pyramid Base | ioi0823 | 40p | 29 | 7.52% | 2013-09-03 |
| IOI '09 - Archery | ioi0911 | 50p | 21 | 11.11% | 2009-09-13 |
| IOI '09 - Hiring | ioi0912 | 30p | 224 | 16.39% | 2010-06-25 |
| IOI '09 - Salesman | ioi0924 | 30p | 121 | 15.86% | 2010-07-31 |
| IOI '09 Practice Task - Museum | ioi0903 | 15p | 67 | 49.67% | 2014-04-16 |
| IOI '09 - Raisins | ioi0914 | 15p | 336 | 55.82% | 2013-09-02 |
| IOI '09 - Mecho | ioi0922 | 15 | 239 | 13.28% | 2010-07-16 |
| IOI '09 - POI | ioi0913 | 7 | 386 | 30.84% | 2010-02-19 |
| IOI '09 - Garage | ioi0921 | 10 | 410 | 48.54% | 2010-02-19 |
| IOI '10 - Quality of Living | ioi1013 | 15p | 317 | 28.69% | 2013-12-20 |
| IOI '10 - Traffic Congestion | ioi1022 | 15p | 344 | 34.48% | 2013-12-21 |
| IOI '11 Practice Task - Hottest | ioi1102 | 5 | 383 | 23.72% | 2014-04-17 |
| IOI '11 - Tropical Garden | ioi1111 | 25p | 159 | 11.83% | 2013-08-23 |
| IOI '11 - Race | ioi1112 | 30p | 410 | 15.33% | 2013-08-24 |
| IOI '11 - Rice Hub | ioi1113 | 15p | 423 | 18.25% | 2013-08-25 |
| IOI '11 - Crocodile's Underground City | ioi1121 | 17p | 321 | 19.92% | 2013-08-25 |
| IOI '11 - Dancing Elephants | ioi1122 | 30p | 98 | 9.93% | 2013-08-26 |
| IOI '12 - Pebbling Odometer | ioi1211 | 40p | 23 | 2.43% | 2013-08-11 |
| IOI '12 - Parachute Rings | ioi1212 | 25p | 129 | 14.26% | 2013-08-12 |
| IOI '12 - Crayfish Scrivener | ioi1213 | 20p | 315 | 20.59% | 2013-08-12 |
| IOI '12 - Ideal City | ioi1221 | 25p | 144 | 21.02% | 2013-08-13 |
| IOI '12 - Jousting Tournament | ioi1223 | 30p | 156 | 15.49% | 2013-08-12 |
| IOI '13 - Dreaming | ioi1311 | 20p | 394 | 17.05% | 2013-07-15 |
| IOI '13 - Art Class | ioi1312 | 30p | 75 | 2.61% | 2013-07-15 |
| IOI '13 - Wombats | ioi1313 | 40p | 72 | 9.72% | 2013-07-18 |
| IOI '13 - Robots | ioi1322 | 20p | 241 | 13.73% | 2013-07-28 |
| IOI '13 - Game | ioi1323 | 30p | 167 | 8.83% | 2013-07-28 |
| IOI '14 Practice Task - Square | ioi1401 | 12p | 150 | 46.10% | 2014-06-25 |
| IOI '14 Practice Task - Station | ioi1402 | 7 | 217 | 40.70% | 2014-06-25 |
| IOI '14 Practice Task - Tile | ioi1403 | 15p | 97 | 28.50% | 2014-06-25 |
| IOI '14 - Wall | ioi1412 | 25p | 310 | 21.32% | 2014-07-29 |
| IOI '14 - Gondola | ioi1421 | 20p | 204 | 8.28% | 2014-07-29 |
| IOI '14 - Friend | ioi1422 | 25p | 149 | 15.03% | 2014-07-29 |
| IOI '14 - Holiday | ioi1423 | 30p | 110 | 8.88% | 2014-07-29 |
| IOI '15 - Boxes with Souvenirs | ioi1511 | 15p | 226 | 11.58% | 2015-09-05 |
| IOI '15 - Teams | ioi1513 | 30p | 54 | 6.22% | 2015-09-05 |
| IOI '15 - Horses | ioi1521 | 15p | 186 | 8.42% | 2015-09-05 |
| IOI '15 - Sorting | ioi1522 | 20p | 156 | 15.97% | 2015-09-05 |
| IOI '16 - Molecules | ioi1611 | 10p | 146 | 11.89% | 2017-08-10 |
| IOI '16 - Railroads | ioi1612 | 30p | 20 | 13.68% | 2017-08-10 |
| IOI '16 - Shortcut | ioi1613 | 35p | 9 | 8.26% | 2017-08-10 |
| IOI '16 - Paint By Numbers | ioi1621 | 15p | 46 | 10.22% | 2017-08-10 |
| IOI '16 - Aliens | ioi1623 | 40p | 30 | 5.77% | 2017-08-10 |
