Does anybody have any idea to do operations like multipling and adding to Big integers ? (for example with 100 digits)
acctually i know it can be done in languages like Java but i want to do it in c++ fast enough.
Does anybody have any idea to do operations like multipling and adding to Big integers ? (for example with 100 digits)
acctually i know it can be done in languages like Java but i want to do it in c++ fast enough.
| № | Пользователь | Рейтинг |
|---|---|---|
| 1 | jiangly | 3846 |
| 2 | tourist | 3799 |
| 3 | orzdevinwang | 3706 |
| 4 | jqdai0815 | 3682 |
| 5 | ksun48 | 3590 |
| 6 | Ormlis | 3533 |
| 7 | Benq | 3468 |
| 8 | Radewoosh | 3463 |
| 9 | ecnerwala | 3451 |
| 9 | Um_nik | 3451 |
| Страны | Города | Организации | Всё → |
| № | Пользователь | Вклад |
|---|---|---|
| 1 | cry | 165 |
| 2 | -is-this-fft- | 161 |
| 3 | Qingyu | 160 |
| 4 | atcoder_official | 156 |
| 4 | Dominater069 | 156 |
| 6 | adamant | 154 |
| 7 | djm03178 | 151 |
| 8 | luogu_official | 149 |
| 9 | Um_nik | 148 |
| 10 | awoo | 147 |
You can use fft if you can't apply this you can apply karatsuba (this is for multipling). Adding is simple.
BigInt for C++ by Arpa
thanks!
U can write bignum struct by your own or get a help from blogs in Codeforces. U can read this blog! the blog that Bakry introduced is helpful too!
thanks! this was so helpful.
Big Integer Library by Jane Alam Jan