Please Help with dp problem?

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Please Help with dp problem?

Difference between en1 and en2, changed 3 character(s)

Hi can anyone tell any dp approach to this?↵
↵
Problem link==> http://mirror.codeforces.com/contest/1151/problem/B↵
↵
I can think of a O(n*m*2^10) dp But it will not pass. ↵
↵
Thanks in advance.

History

Revisions

	Rev.	Lang.	By	When	Δ	Comment
	en2		BanazadehAria	2019-07-01 14:11:17	3	Tiny change: 'nm2^10) But it wi' -> 'nm2^10) dp But it wi'
	en1		BanazadehAria	2019-07-01 14:06:49	212	Initial revision (published)