@sunny , yep it looks DP. more of MCM.

solve for substrings of length 1,2,3.
and then apply DP[i][j]=max score for a substring from i to j.
=max(DP[i][k]+DP[k][j]) where k>i && k<j .

The complexity this approach renders would be O(n^3).
with O(n^2) space complexity.

anyone anything better ?

Thanks.
Ravi Shukla
CSE Final Year.
BIT Mesra, Ranchi

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