https://icpcarchive.github.io/Asia%20East%20Continent%20Contests/Shanghai/2021%20Asia%20Shanghai%20Regional%20Contest/problems.pdf

source 383ace025e84 · match key icpcarchive.github.io/asia%20east%20continent%20contests/shanghai/2021%20asia%20shanghai%20regional%20contest/problems.pdf · all sources

live
https://icpcarchive.github.io/Asia%20East%20Continent%20Contests/Shanghai/2021%20Asia%20Shanghai%20Regional%20Contest/problems.pdf
wayback
calendar of snapshots
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problem set
health
live checked 2026-11-03 — mentions year 2021±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-2021 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 05:22 live held 383ace025e84@20261102052237

wayback
snapshot nearest 2026-11-02 05:22
artifacts
problemset
contestartifactfetchedviafetched fromtypesizesha256pathlinks
shanghai-2021problemset 2026-11-02 05:22livehttps://icpcarchive.github.io/Asia%20East%20Continent%20Contests/Shanghai/2021%20Asia%20S…application/pdf299824263866a3bfab39ee0shanghai/shanghai-2021/problemset/20261101-live-258841fe/problems.pdfraw

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 2021±1 (no snapshot to compare)
2026-11-03livecontentlive: mentions year 2021±1 (no snapshot to compare)