I must misunderstand something because both example given have 2 lines of symmetry each and I'm confused as to what's expected here.

Basically, the first 'desert' has a symetry at line 3/4 and column 5/6 (counting from 1) but the example doesn't mention the line symmetry and only adds 5 to the sum. Same issue with the second one, it has a symmetry at line 4/5 and column 3/4, again the example only considers the line symmetry and adds 100*4 to the result.

I've tried to take the max number of line/column of both symmetries but that's not it. I tried to count all symmetries too giving 708 for the example but all are wrong (solution is between min and max).

What am I missing here?