| # | 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 |
Need Help in this generating subset code!
void search(int k) {
if (k == n) {
// process subset
} else {
search(k+1);
subset.push_back(k);
search(k+1);
subset.pop_back();
}
}
I am having a really hard time understand this code. I especially don't understand how 'k' turns to 2 after 'k' reaches 3. I think It's related to the thing backtracking. Someone plz help!!!
