Hello guys. I have struggle with IOI 2016 problem B. How it can be solved for 100 points. Please in explanation clarify why we did that step?
# | User | Rating |
---|---|---|
1 | tourist | 3803 |
2 | jiangly | 3707 |
3 | Benq | 3627 |
4 | ecnerwala | 3584 |
5 | orzdevinwang | 3573 |
6 | Geothermal | 3569 |
6 | cnnfls_csy | 3569 |
8 | Radewoosh | 3542 |
9 | jqdai0815 | 3532 |
10 | gyh20 | 3447 |
# | User | Contrib. |
---|---|---|
1 | awoo | 161 |
2 | maomao90 | 160 |
3 | adamant | 157 |
4 | maroonrk | 154 |
5 | -is-this-fft- | 148 |
5 | SecondThread | 148 |
7 | Petr | 147 |
7 | atcoder_official | 147 |
9 | TheScrasse | 145 |
9 | nor | 145 |
I have interesting problem from WCIP3G. I thought that is DP.
And in my DP I have 2 states.
dp[i][j] = answer for subsequence from i to j
.
Transitions obviously will be dp[i + 1][j] and dp[i][j - 1].
But how it can be written?
Name |
---|