How can i solve following problem using string hashing? SUB_PROB
# | User | Rating |
---|---|---|
1 | jiangly | 3640 |
2 | Benq | 3593 |
3 | tourist | 3572 |
4 | orzdevinwang | 3561 |
5 | cnnfls_csy | 3539 |
6 | ecnerwala | 3534 |
7 | Radewoosh | 3532 |
8 | gyh20 | 3447 |
9 | Rebelz | 3409 |
10 | Geothermal | 3408 |
# | User | Contrib. |
---|---|---|
1 | maomao90 | 173 |
2 | adamant | 164 |
3 | awoo | 162 |
4 | TheScrasse | 160 |
5 | nor | 159 |
6 | maroonrk | 156 |
7 | SecondThread | 154 |
8 | pajenegod | 147 |
9 | BledDest | 145 |
9 | Um_nik | 145 |
How can i solve following problem using string hashing? SUB_PROB
Name |
---|
Use Rabin-Karp Algorithm. It uses string hashing.
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.