How can i solve following problem using string hashing? SUB_PROB
# | User | Rating |
---|---|---|
1 | tourist | 3856 |
2 | jiangly | 3747 |
3 | orzdevinwang | 3706 |
4 | jqdai0815 | 3682 |
5 | ksun48 | 3591 |
6 | gamegame | 3477 |
7 | Benq | 3468 |
8 | Radewoosh | 3462 |
9 | ecnerwala | 3451 |
10 | heuristica | 3431 |
# | User | Contrib. |
---|---|---|
1 | cry | 167 |
2 | -is-this-fft- | 162 |
3 | Dominater069 | 160 |
4 | Um_nik | 158 |
5 | atcoder_official | 156 |
6 | djm03178 | 153 |
7 | adamant | 152 |
8 | luogu_official | 149 |
9 | awoo | 147 |
10 | TheScrasse | 146 |
How can i solve following problem using string hashing? SUB_PROB
Name |
---|
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.