fatemehkarimi's blog

By fatemehkarimi, history, 13 months ago, In English,

I had a hard time finding a solution to the problem "Sherlock and cost" [](https://www.hackerrank.com/challenges/sherlock-and-cost/problem)but I wasn't able to solve it. then I searched the whole internet and read the people's code. I understood what they do(i.e understand their code) but I can't understand why this algorithm is true and what is the recursion??

can anyone tell me how does its dynamic approach work?? this is the code I read for this problem

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