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Please explain algo faster than N^4 Vasily Slesarev 21 май 2011 15:51

I know dp algorithm, but it is too slow - O(N^4).
Please explain faster algorithm.

Here algorithm O(1): use precalculated array ;)

Re: Please explain algo faster than N^4 Vasily Slesarev 23 май 2011 20:16

Thank you)

Re: Please explain algo faster than N^4 Jonathan Paulson 8 сен 2011 11:04

It is possible to use a different DP state and calculate each of N^2 cells in O(N) time (N^3 DP algorithm)