Christmas Tree Un-decoration
problem — every listed problem · all sets
- internal id
- p-ab8286c5
- appearances
- apc-2026 (apc-2026) — D
- held
- not recorded yet
- solve online
- Codeforces Gym id 2206D
- data
- problemsets/apc-2026.yaml
St statement · D test data · IV/OV input/output validator · So solutions · P complete package — filled = held.