can anyone suggest approach to solve this problem?
https://codeforces.com/gym/102157/problem/3
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can anyone suggest approach to solve this problem?
https://codeforces.com/gym/102157/problem/3
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I think for this problem you're DP state is going to be DP[current index on first row][what elements are matched on bottom row]
We can use a bitmask to represent what elements are matched on the bottom row (with respect to our current index on the first row). Because e <= 4, the we only need to consider "windows" of length 9, so our bit mask goes to 2^9 which is 512. Transitions then become trivial.
I believe the overall complexity is O(N * 2^(2E+1) + N*K).
Thank you...
Can you please elaborate. Can you provide recurrence relation?