| # | 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 |
| # | User | Contrib. |
|---|---|---|
| 1 | cry | 169 |
| 2 | maomao90 | 162 |
| 2 | Um_nik | 162 |
| 4 | atcoder_official | 160 |
| 5 | djm03178 | 158 |
| 5 | -is-this-fft- | 158 |
| 7 | adamant | 155 |
| 8 | Dominater069 | 154 |
| 9 | awoo | 152 |
| 10 | luogu_official | 150 |
We are to find the index of lexographically sorted balanced brakcet sequence.
I was referring to cpalgorithms, but couldn't understood,
while calculate the index number when we get ")" , why we are adding dp[2*n-i-1][depth+1] to our answer. what is the intution behind it.
Someone pls tell >> > Errichto Please help
why no one is replying ?
-_-
Solve problems on your level, not something much above it. You didn't even name it correctly. Get back to this problem after you are, say, 1600+ and you solved many dp problems.