National Treasures

problem — every listed problem · all sets

internal id
p-85eedf0b
appearances
acpc-2009 (acpc-2009) — J
held
not recorded yet
solve online
ICPC Live Archive id 4742
Baekjoon Online Judge (wayback) closed 2026-04-28 id 4898
data
problemsets/acpc-2009.yaml

St statement · D test data · IV/OV input/output validator · So solutions · P complete package — filled = held.