After rounds problems appear in the problemset and somehow get their difficulties after some time. How is the difficulty selected for a problem and what's the time needed for rating to be determined?
№ | Пользователь | Рейтинг |
---|---|---|
1 | tourist | 3880 |
2 | jiangly | 3669 |
3 | ecnerwala | 3654 |
4 | Benq | 3627 |
5 | orzdevinwang | 3612 |
6 | Geothermal | 3569 |
6 | cnnfls_csy | 3569 |
8 | jqdai0815 | 3532 |
9 | Radewoosh | 3522 |
10 | gyh20 | 3447 |
Страны | Города | Организации | Всё → |
№ | Пользователь | Вклад |
---|---|---|
1 | awoo | 161 |
2 | maomao90 | 160 |
3 | adamant | 156 |
4 | maroonrk | 153 |
5 | atcoder_official | 148 |
5 | -is-this-fft- | 148 |
5 | SecondThread | 148 |
8 | Petr | 147 |
9 | nor | 144 |
10 | TheScrasse | 142 |
After rounds problems appear in the problemset and somehow get their difficulties after some time. How is the difficulty selected for a problem and what's the time needed for rating to be determined?
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I read a blog from mike, they are automatic(obviously not manual), depends on the number of solves by rating groups, he fitted a curve or something for it, there is a old blog for it. I think it takes a few days for ratings to come
It is calculate though the number of solves. If very few people solved a problem, it will receive high rating, and vice versa. Due to this, sometimes problems are severely overrated or underrated. I have seen some 1400 problems that feels like they should be 1800, and 1800 problems that feels like they are 1200.