Help me with a fibonacci sequence function in c++

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Help me with a fibonacci sequence function in C++

Implement the function FastFib that on input n outputs the n-th term of the

Fibonacci number. Your running time must be within O(log n) by using any method. The Fibonacci numbers are defined as

fn = {1 n = 1, 2}

{f sub n-1 + f sub n-2 n>= 3 }

Here you can assume that there is no integer overflow.

Reference no: EM131856066

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