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.
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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