One test case giving wrong answer

#1
#2

Aryan, ca you pls tell the algo u have used in your code, I am not able to understand that.

#3

@yuktimutreja01 i get the lcs of the first 2 strings, then get the lcs of this string and 3rd string.
the lcs functions returns the string which is the longest common subsequence but reverse.
the size of this string is the answer