List to store maximum and minimum of all the four forms
V = [ 0 for i in range ( N ) ] NEW_LINE V1 = [ 0 for i in range ( N ) ] NEW_LINE for i in range ( N ) : NEW_LINE INDENT V [ i ] = A [ i ] [ 0 ] + A [ i ] [ 1 ] NEW_LINE V1 [ i ] = A [ i ] [ 0 ] - A [ i ] [ 1 ] NEW_LINE DEDENT