I am very beginner to solve DP problems. For a particular DP problem, I usually kill a lot of time but most of the cases I don't get any idea/solution for that problem. From where I can learn DP for my betterment ? Please suggest some resources/blog/anything. Also give me your valuable suggestion for my improvement in solving DP problems. Thank you.

Can anyone please suggest me the solution idea of the mentioned problem ? Here is the link below Problem link :