One of the feature of Codeforces I really wonder about is how the difficulty level of a problem is determined? Is it by any mathematical calculation, or manual estimation? Why the tags of a problem is not published just after the contest? Thanks for reading this blog. I will really appreciate your helps and insights.
| # | User | Rating |
|---|---|---|
| 1 | Benq | 3676 |
| 2 | jiangly | 3670 |
| 3 | Kevin114514 | 3657 |
| 4 | maroonrk | 3355 |
| 5 | Um_nik | 3353 |
| 6 | squareOf105 | 3346 |
| 7 | tourist | 3343 |
| 8 | strapple | 3324 |
| 9 | heuristica | 3322 |
| 10 | jiangbowen | 3291 |
| # | User | Contrib. |
|---|---|---|
| 1 | Qingyu | 158 |
| 2 | nik_exists | 150 |
| 2 | maspy | 150 |
| 4 | AmShZ | 143 |
| 5 | Um_nik | 141 |
| 6 | Errichto | 139 |
| 7 | adamant | 137 |
| 8 | BledDest | 134 |
| 9 | maroonrk | 133 |
| 10 | qwexd | 130 |
how the difficulty level of a problem is determined
Number of people solved the problem within what range of time
Why the tags of a problem is not published just after the contest
A problem can be solved in number of ways.Suppose author did it greedily but some contestant did it with DP.Then the tags will be greedy & DP. Thats why it takes time to define the problem tags.
Tags are edited by the community.
But , not everyone has the tag edit access. Do there are special members/admins for those type of tasks?
Div 1 coders (rating $$$\geq 1900$$$) have tag edit access provided that they have solved a "recently" added problem, such as a problem from a recent contest. Source