| ID | Name | Tags | Submitters | % Correct | Average |
|---|---|---|---|---|---|
| obc | Task Step Traversing a Tree | oi 2 e3 d1 | 101 | 88% | 92 |
| oce | Oceny | oi 24 e3 d1 | 336 | 77% | 81 |
| odw | Zadanie Odwiedziny | oi 22 e3 d0 | 161 | 68% | 75 |
| odw | Task Weights | oi 14 e3 d1 | 117 | 88% | 90 |
| ogr | Ogrodzenie | oi 25 e3 d1 | 118 | 33% | 51 |
| ogr | Ogrodzenie | oi 32 e3 d0 | 9 | 77% | 78 |
| okr | Task Periodicity | oi 18 e3 d1 | 44 | 47% | 66 |
| olt | Task Altars | oi 6 e3 d2 | 34 | 64% | 72 |
| orn | Ornitolog | oi 26 e3 d2 | 152 | 38% | 58 |
| pal | Palindromy | oi 13 e3 d2 | 66 | 72% | 78 |
| pan | Task Solar Panels | oi 21 e3 d2 | 190 | 87% | 88 |
| par | Parada | oi 23 e3 d2 | 930 | 85% | 90 |
| par | Park linowy | oi 30 e3 d2 | 107 | 69% | 74 |
| pat | Task Sticks | oi 18 e3 d2 | 189 | 82% | 88 |
| pch | Task Wandering Flea Trainers | oi 8 e3 d0 | 20 | 80% | 89 |
| pen | Task Salaries | oi 19 e3 d1 | 434 | 87% | 88 |
| per | Permutacje antyarytmetyczne | oi 3 e3 d0 | 51 | 84% | 85 |
| per | Permutacje | oi 31 e3 d2 | 48 | 47% | 72 |
| per | Task Permutation | oi 15 e3 d2 | 32 | 50% | 56 |
| pie | Task Primitivus | oi 6 e3 d2 | 21 | 61% | 80 |