Given two numbers represented as strings a and b, compute their product and output product as a string.
|a| <=1e6, |b|<=1e6
How do I solve it, I brute forced it and it gives me TLE.
can anyone help me? is there an optimal way ??
Given two numbers represented as strings a and b, compute their product and output product as a string.
|a| <=1e6, |b|<=1e6
How do I solve it, I brute forced it and it gives me TLE.
can anyone help me? is there an optimal way ??
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-is-this-fft-
So we have $$$10^{10^6} \cdot 10^{10^6} = 10^{2000000}$$$ , bro go create some new structure for such numbers
output product as a string
Using FFT it can be solved in O(nlogn), n = max ( | a | , | b | ).
Check this out