Fibonacci Sum Based problem

#1

I want to learn the concept of matrix exponential to solve this question .
The link to my que is https://www.spoj.com/problems/FIBOSUM/

Please give me the detailed solution

#2

Doubt resolve nhi hota hai kya yaha???/

#3

You can check out this code.
For reading, you can check out this blog

#4

You have send some other code .Please look it once but editorial is fine.

#5

Sorry check this one