please help me to understand 3D dynamic programming like some basic question of it with explanation, link is also fine
thank you
I had did my first dp question on codeforces which uses 3D array.
Here is the link : Problem - 711C - Codeforces
In this I had used a 3D dp array for memoization. In my solution dp[i][j][k] will represent the number of the minimum amount of paint needed to colour the first i trees such that it has beauty j and the i-th tree is colored by colour k.
U can see the editorial for more details which is in the name of “Tutorial” on the bottom right corner.
Happy coding 
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This 3d dp problem is really nice and it will surely provide you the clarity
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if one give some question from geeksforgeeks ,or some other platform?
thank you.
yes its 3d dp