My solution 8329406 to the problem 295B - Greg and Graph is O(N^3), but it runs within 3 seconds? How is it possible? N is 500.
№ | Пользователь | Рейтинг |
---|---|---|
1 | tourist | 4009 |
2 | jiangly | 3823 |
3 | Benq | 3738 |
4 | Radewoosh | 3633 |
5 | jqdai0815 | 3620 |
6 | orzdevinwang | 3529 |
7 | ecnerwala | 3446 |
8 | Um_nik | 3396 |
9 | ksun48 | 3390 |
10 | gamegame | 3386 |
Страны | Города | Организации | Всё → |
№ | Пользователь | Вклад |
---|---|---|
1 | cry | 167 |
2 | Um_nik | 163 |
3 | maomao90 | 162 |
3 | atcoder_official | 162 |
5 | adamant | 159 |
6 | -is-this-fft- | 158 |
7 | awoo | 157 |
8 | TheScrasse | 154 |
9 | Dominater069 | 153 |
9 | nor | 153 |
My solution 8329406 to the problem 295B - Greg and Graph is O(N^3), but it runs within 3 seconds? How is it possible? N is 500.
Название |
---|
The code you shared took 1090 ms (i.e. almost 1 second) and got Accepted. It didn't take 3 seconds. 500^3 = 1.25*10^8.
I meant less than 3 seconds. Actually time shown is twice of actual time so it takes half a second.
How does 1.25*10^8 work in half a second?
Nothing special, Codeforces servers can do sometimes about 4 * 108 operations per second.
Hm... okay, I read somewhere it is 10^7. Thanks.