Post Office Investigation
problem — every listed problem · all sets
- internal id
- p-1427a85e
- appearances
- japan-2015 (japan-2015) — J
- held
- not recorded yet
- solve online
- Baekjoon Online Judge (wayback) closed 2026-04-28 id 11756
Aizu Online Judge (AOJ) id 1365 - data
- problemsets/japan-2015.yaml
St statement · D test data · IV/OV input/output validator · So solutions · P complete package — filled = held.