Zero or One
problem — every listed problem · all sets
- internal id
- p-6f1d9df5
- appearances
- brazil-2013 (brazil-2013) — A
- held
- not recorded yet
- solve online
- Baekjoon Online Judge (wayback) closed 2026-04-28 id 13623
Baekjoon Online Judge (wayback) closed 2026-04-28 id 9525 - data
- problemsets/brazil-2013.yaml
St statement · D test data · IV/OV input/output validator · So solutions · P complete package — filled = held.