InterviewBit Problems   Coin Sum Infinite : Unsolved

About the Coin Sum Infinite : Unsolved category (1)
Why input is always called A, B (3)
Not getting answer for testcase (2)
Time limit exceeded even for O(n^2) (3)
Smart tabulation to overcome MLE (1)
Don't worry if you are getting TLE (1)
At least mention the required time complexity! (1)
No proper details for limits (1)
Is this a knapsack problem (2)
Modulo is not 1e9+7 which is brutal, please take care (2)
Memory limit exceeds in tabulation? (2)
Wrong output for the testcase (6)
This question have some problem cos it is showing wrong ans for a case like: A : (6)