And Then There Was One

problem — every listed problem · all sets

internal id

p-8012e9e6

appearances

japan-2007 (japan-2007) — A

held

not recorded yet

solve online

Aizu Online Judge (AOJ) id 1275
Baekjoon Online Judge (wayback) closed 2026-04-28 id 3895
Codeforces Gym id 101415/A

data

problemsets/japan-2007.yaml

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