Driver code
a = [ [ 1 , 2 , 3 ] , [ 4 , 5 , 6 ] , [ 7 , 8 , 9 ] ] NEW_LINE print ( getGreatestSum ( a ) ) NEW_LINE b = [ [ 4 , 5 , 6 ] , [ 4 , 5 , 6 ] , [ 4 , 5 , 6 ] ] NEW_LINE print ( getGreatestSum ( b ) ) NEW_LINE