Question: If in the longest common subsequence problem, I am only interested in the length of the longest common subsequence, not the actual subsequence, can you

If in the longest common subsequence problem, I am only interested in the length of the longest common subsequence, not the actual subsequence, can you reduce the space complexity of O(mn) (because of matrix DP) to O(m+n)? If so, state your solution and write pseudocode. Otherwise say why.

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