Hi. I was working on a DP problem (SPOJ MFISH) but I couldn't understand how the DP works. I've seen a few codes online but couldn't comprehend them either. Could someone explain it to me?
→ Pay attention
→ Streams
→ Top rated
| # | User | Rating |
|---|---|---|
| 1 | tourist | 3985 |
| 2 | jiangly | 3814 |
| 3 | jqdai0815 | 3682 |
| 4 | Benq | 3529 |
| 5 | orzdevinwang | 3526 |
| 6 | ksun48 | 3517 |
| 7 | Radewoosh | 3410 |
| 8 | hos.lyric | 3399 |
| 9 | ecnerwala | 3392 |
| 9 | Um_nik | 3392 |
→ Top contributors
| # | User | Contrib. |
|---|---|---|
| 1 | cry | 169 |
| 2 | maomao90 | 162 |
| 2 | Um_nik | 162 |
| 4 | atcoder_official | 161 |
| 5 | djm03178 | 158 |
| 6 | -is-this-fft- | 157 |
| 7 | adamant | 155 |
| 8 | awoo | 154 |
| 8 | Dominater069 | 154 |
| 10 | luogu_official | 150 |
→ Find user
→ Recent actions
Codeforces (c) Copyright 2010-2024 Mike Mirzayanov
The only programming contests Web 2.0 platform
Server time: Dec/22/2024 19:17:56 (i1).
Desktop version, switch to mobile version.
Supported by
Consider the ships sorted by their anchor index. For every ship you can find a range of indexes where it can start. Just try every possible placement for each ship. The complexity is O(n) because you visit every index at most twice.
P.S.: Thanks to SPOJ, I just found out that there is a programming language called "chicken" :D
OK, got AC. I was using the end location of ships to do my DP, but I think I calculated them wrong. Thanks!