Deeply study the 2 conditions for DP

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1. Optimal substructure, and examine problems that have/don't have it.
2. Overlapping subproblems, and examine problems that have/don't have it.
3. Relation between DP and Divide and Conquer
4. Effect of nature of the problem and these algorithm design techniques

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[sanjarcode]

5. Bellman eqn