| CEOI23_gradingserver | | Bring Down the Grading Server Batch | 5 |
| CEOI23_incursion | | The Ties That Guide Us Interactive Two steps | 65 |
| CEOI23_light | | A Light Inconvenience Interactive | 49 |
| CEOI23_trade | | Tricks of the Trade Batch | 32 |
| CEOI24_battle | | Naval battle Batch | 59 |
| CEOI24_covid | | COVID tests Interactive | 37 |
| CEOI24_editor | | Text editor Batch | 57 |
| CEOI24_sprinklers | | Sprinklers Batch | 79 |
| CEOI24_stations | | Petrol stations Batch | 21 |
| CEOI24_toy | | Toy Batch | 129 |
| CEOI25_boardgames | | Boardgames Batch | 2 |
| CEOI25_equalmex | | Equalmex Batch | 12 |
| CEOI25_highest | | Highest Batch | 4 |
| CEOI25_lawnmower | | Lawn Mower Batch | 7 |
| CEOI25_splits | | Splits Batch | 2 |
| CEOI25_theseus | | Theseus Interactive Communication | 14 |
| CEOI26_birdwatchers | | Birdwatchers Batch | 4 |
| CEOI26_dfs | | DFS Batch | 36 |
| CEOI26_flowers | | Flower Cutting Batch | 26 |
| CEOI26_hunt | | Treasure Hunt Batch | 2 |
| CEOI26_towers | | Towers Batch | 22 |
| CEOI26_vim | | Vim Batch | 3 |
| CERC12_B | | Who wants to live forever? Batch | 3 |
| CERC12_D | | Non-boring sequences Batch | 8 |
| CERC12_F | | Farm and factory Batch | 5 |