The Morning after Halloween
problem — every listed problem · all sets
- internal id
- p-9ff83757
- appearances
- japan-2007 (japan-2007) — G
- held
- not recorded yet
- solve online
- Baekjoon Online Judge (wayback) closed 2026-04-28 id 3901
Aizu Online Judge (AOJ) id 1281
Codeforces Gym id 101415/G - data
- problemsets/japan-2007.yaml
St statement · D test data · IV/OV input/output validator · So solutions · P complete package — filled = held.