Print lcs dynamic programming

#1

I have written code as per instructed in hint video but
when dp[x-1][y]==dp[x][y-1]==dp[x][y],then how to write the condition i could not undertsand.
how to shift x,y to upper of it as x-1,y

#2

Please take a look at this code if you are having issues with the transitions.

#3

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