Specimen VII · 01
Codeforces
free
Dominant competitive programming platform
Multiple rated rounds weekly. Explicit AI-use restrictions during main contests.
| Habitat | Competitive |
| Access tier | free |
| Relevance to stack | low |
| Last active signal | Round 1104 2026-06-18 |
| Verified alive | yes — pressed 2026 |
| Specimen no. | VII · 01 |
| Live habitat | https://codeforces.com |