InterviewBit Problems   REC_CMPL3 : Unsolved

About the REC_CMPL3 : Unsolved category (1)
Approach to solve Time complexity (1)
Can Anyone Explain the Logic? (2)
Dynamic programming 101 (1)
Didnt understand how memo element assignment alters the number of times its called (3)
Someone explain the last part (2)
I am not understanding why it is not exponential (8)
Didn't get the logic (1)
Can anyone explain what could be the value of memo[101][101] (2)
The memo array does need a description to solve the problem? (1)