https://xcpcio.github.io/upload-file/icpc/2020/2020icpc%E5%8D%97%E4%BA%AC%E7%AB%99%E6%AD%A3%E5%BC%8F%E8%B5%9B%E9%A2%98%E9%9D%A2.pdf

source 97e2d1dad3b8 · match key xcpcio.github.io/upload-file/icpc/2020/2020icpc%e5%8d%97%e4%ba%ac%e7%ab%99%e6%ad%a3%e5%bc%8f%e8%b5%9b%e9%a2%98%e9%9d%a2.pdf · all sources

live

https://xcpcio.github.io/upload-file/icpc/2020/2020icpc%E5%8D%97%E4%BA%AC%E7%AB%99%E6%AD%A3%E5%BC%8F%E8%B5%9B%E9%A2%98%E9%9D%A2.pdf

wayback

calendar of snapshots

roles

problem set

health

live checked 2026-11-03 — mentions year 2020±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

nanjing-2020 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.

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.