| № | Пользователь | Рейтинг |
|---|---|---|
| 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 |
| Страны | Города | Организации | Всё → |
| № | Пользователь | Вклад |
|---|---|---|
| 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 |
When can 'Ofast' optimization bring negative optimization
We all know that this line in C++#pragma GCC optimize("Ofast") can optimize most programs.
But specially, the accident(maybe?) happens on me.
Today, I was solving the problem 455D - Серега и веселье with fhq-treap, And I submitted two submissions: 58122597 and 58123225, when first one got AC with no optimization, and the second with 'Ofast' optimization got TLE on test 25.
So I just want to know what kind of programs the 'Ofast' optimization can bring negative optimization?
| Rev. | Язык | Кто | Когда | Δ | Комментарий | |
|---|---|---|---|---|---|---|
| en3 |
|
AcceptedIsRealAbility | 2019-08-01 15:10:59 | 1 | Tiny change: 'he problem[problem:4' -> 'he problem [problem:4' | |
| en2 |
|
AcceptedIsRealAbility | 2019-08-01 15:10:30 | 18 | ||
| en1 |
|
AcceptedIsRealAbility | 2019-08-01 15:09:45 | 579 | Initial revision (published) |
