Hello everyone!!

Codeforces or other online judges enable us to find problems of different categories like "Graph Theory", "Dynamic Programming" etc.

But these sites do not provide filtering options like "Dynamic Programming of type 0/1 Knapsack" or "Dynamic Programming of type coin change" or this type of very specific topic wise classifications.

Hence I am asking the community for any source that may contain a detail list like that, or calling to help me build a list, that will feature problems, each of different types, which will help a competitive programmer to learn new problem solving techniques by solving a wide variety of problems from that list.