https://qoj.ac/contest/2109

source f06d8fa51dc9 · match key qoj.ac/contest/2109 · all sources

live
https://qoj.ac/contest/2109
wayback
calendar of snapshots
roles
problem set
health
changed checked 2026-11-03 — never mentions year 2017±1 (no snapshot to compare)
changed: same place, drifted content (30–75% similar to the snapshot, never mentions the year, or a JS shell / login wall)
referenced by
shenyang-2017 problem set

Snapshots (1)

One entry per time this address is known at: Wayback snapshots we captured, our live fetches, and times the catalogue declares (as_of) without a capture. Each capture is our stored copy, with its provenance.

2026-11-02 15:54 live held f06d8fa51dc9@20261102155423

wayback
snapshot nearest 2026-11-02 15:54
artifacts
problemset
contestartifactfetchedviafetched fromtypesizesha256pathlinks
shenyang-2017problemset 2026-11-02 15:54livehttps://qoj.ac/logintext/html12910cc129238112620deshenyang/shenyang-2017/problemset/20261102-live-5f86595e/page.htmlraw

Checks (2)

Every time this address was looked at and what came back. A check that found no content is a record of the attempt, not a snapshot.

whenviaoutcomeevidence
2026-11-02livecontentchanged: never mentions year 2017±1 (no snapshot to compare)
2026-11-03livecontentchanged: never mentions year 2017±1 (no snapshot to compare)