https://qoj.ac/contest/1866

source 9c9b57321203 · match key qoj.ac/contest/1866 · all sources

live
https://qoj.ac/contest/1866
wayback
calendar of snapshots
roles
problem set
health
live checked 2026-11-03 — mentions year 2019±1 (no snapshot to compare)
live: the address still serves the contest-era content (identical or ≥75% similar to the near-contest snapshot, or mentions the contest year)
referenced by
shanghai-2019 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 9c9b57321203@20261102155416

wayback
snapshot nearest 2026-11-02 15:54
artifacts
problemset
contestartifactfetchedviafetched fromtypesizesha256pathlinks
shanghai-2019problemset 2026-11-02 15:54livehttps://qoj.ac/logintext/html12910bf32f55a66a26e6fshanghai/shanghai-2019/problemset/20261102-live-22379521/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
2026-11-02livecontentlive: mentions year 2019±1 (no snapshot to compare)
2026-11-03livecontentlive: mentions year 2019±1 (no snapshot to compare)