JOI 2019-2020 Season
| Source | Subfolders | Problems |
|---|---|---|
| JOI 2020 First Preliminary Round | 0 | 9 |
| JOI 2020 Second Preliminary Round | 0 | 5 |
| JOI 2020 Final Round | 0 | 5 |
| JOI Open Contest 2020 | 0 | 3 |
| Source | Subfolders | Problems |
|---|---|---|
| JOI 2020 First Preliminary Round | 0 | 9 |
| JOI 2020 Second Preliminary Round | 0 | 5 |
| JOI 2020 Final Round | 0 | 5 |
| JOI Open Contest 2020 | 0 | 3 |