How can i solve following problem using string hashing? SUB_PROB
№ | Пользователь | Рейтинг |
---|---|---|
1 | tourist | 4009 |
2 | jiangly | 3823 |
3 | Benq | 3738 |
4 | Radewoosh | 3633 |
5 | jqdai0815 | 3620 |
6 | orzdevinwang | 3529 |
7 | ecnerwala | 3446 |
8 | Um_nik | 3396 |
9 | ksun48 | 3390 |
10 | gamegame | 3386 |
Страны | Города | Организации | Всё → |
№ | Пользователь | Вклад |
---|---|---|
1 | cry | 167 |
2 | Um_nik | 163 |
3 | maomao90 | 162 |
3 | atcoder_official | 162 |
5 | adamant | 159 |
6 | -is-this-fft- | 158 |
7 | awoo | 157 |
8 | TheScrasse | 154 |
9 | Dominater069 | 153 |
9 | nor | 153 |
How can i solve following problem using string hashing? SUB_PROB
Название |
---|
Use Rabin-Karp Algorithm. It uses string hashing.
Ok thanks!
Isn't the time limit too strict for Rabin-Karp?
Rabin-karp complexity is O(n*m) and this problem time limit is 0.100s. So what will be the better approach?
I couldn't come up with anything using string hashing, but the problem might be solved using suffix array with complexity O(MlogM + N*logM). (still not sure if it's gonna pass since time limit is too tight) You can check it out here.