Twenty Questions
problem — every listed problem · all sets
- internal id
- p-fdcacba8
- appearances
- japan-2009 (japan-2009) — H
- held
- not recorded yet
- solve online
- Aizu Online Judge (AOJ) id 1302
Baekjoon Online Judge (wayback) closed 2026-04-28 id 3882
Codeforces Gym id 101414/H - data
- problemsets/japan-2009.yaml
St statement · D test data · IV/OV input/output validator · So solutions · P complete package — filled = held.