Problems
| Problem Name | Code | Points | Users | AC Rate | Date Added |
|---|---|---|---|---|---|
| IOI '05 - Mountains | ioi0513 | 20p | 142 | 13.19% | 2010-06-24 |
| IOI '04 - Empodia | ioi0423 | 30p | 92 | 17.96% | 2010-06-23 |
| IOI '04 - Phidias | ioi0421 | 10p | 216 | 57.96% | 2009-12-19 |
| IOI '02 - Batch Scheduling | ioi0221 | 17p | 139 | 20.88% | 2010-06-02 |
| IOI '02 - The Troublesome Frog | ioi0211 | 15p | 67 | 17.31% | 2010-06-18 |
| IOI '00 - Car Parking | ioi0012 | 15p | 37 | 15.27% | 2009-08-22 |
| IOI '00 - Walls | ioi0021 | 10 | 86 | 30.62% | 2009-08-22 |
| IOI '99 - A Strip of Land | ioi9923 | 25p | 28 | 9.50% | 2009-08-22 |
| IOI '99 - Little Shop of Flowers | ioi9911 | 10 | 123 | 29.18% | 2009-08-20 |
| IOI '99 - Flatten | ioi9922 | 30p | 14 | 19.47% | 2009-08-22 |
| IOI '00 - Building with Blocks | ioi0023 | 20p | 5 | 23.33% | 2009-08-23 |
| IOI '00 - Palindrome | ioi0011 | 10 | 364 | 20.98% | 2009-08-22 |
| IOI '01 - Twofive | ioi0113 | 25p | 20 | 6.38% | 2013-12-21 |
| IOI '02 - Utopia Divided | ioi0212 | 20p | 77 | 22.22% | 2010-07-25 |
| IOI '01 - Mobile Phones | ioi0111 | 15p | 238 | 18.83% | 2014-06-24 |
| IOI '01 - Depot | ioi0123 | 30p | 36 | 11.58% | 2010-03-07 |
| IOI '00 - Post Office | ioi0022 | 15p | 149 | 39.50% | 2009-08-22 |
| IOI tour | ecooqual2018p4 | 10p | 5 | 12.50% | 2018-01-28 |
