Anyone please help me in solving THIS PROBLME based on counting no. of permutations.
**NOTE : **
Please don’t propose the dp (coin change) problem, I have already solved it using that, I suspect there might be some trick to solve this question.
Anyone please help me in solving THIS PROBLME based on counting no. of permutations.
**NOTE : **
Please don’t propose the dp (coin change) problem, I have already solved it using that, I suspect there might be some trick to solve this question.