Four points A(x_1; y_1), B(x_2; y_2), C(x_3; y_3), D(x_4; y_4) are the vertices of parallelogram. Determine the length of the diagonals and find the coordinates of their intersection.
In 4-lines through the gap defined x and y coordinates of successive peaks parallelogram, respectively points A, B, C and D. All numbers in absolute value does not exceed 100.
The first line print after a gap of x and y coordinates of the point O, in the second - print the length of the diagonal AC and through a gap - BD. The results lead to three decimal.