InterviewBit Problems   Sum Of Fibonacci Numbers : Unsolved

About the Sum Of Fibonacci Numbers : Unsolved category (1)
Greedy approach proof (6)
"test with custom input "giving right answer.But after submitting its giving wrong answer.what the duck? (1)
Very BAD BAD compiler (1)
Why coin change is not working (2)
I don't get it - what has this got to do with graphs?! (1)
Please provide constraints (2)
Why is its optimal approach different than coin change problem for min no of coins? (5)
How to solve through graph (2)
My O(N) solution is giving time limit exceeded (1)
You cannot declare a array/vector of size ~A in this ques (1)
Piece of mind for the problem setter (4)
Wrong answer for test case A=11 (2)
Why does greedy work here!? (3)
Not sure why the problem is in Graphs section. (I recommend Greedy section) (1)
Repetition is allowed. first fibonacci number is 1. 1+1+1... so Answer 1? (2)
It would be better to give more examples. the problem statement is not very clear (1)