Problems
The biggest party of the quadrilateral
The biggest party of the quadrilateral
Problems in the plane quadrilateral coordinates of its vertices. Calculate the length of the longest side of the quadrangle.
Input data
In a single line separated by spaces X
and Y
coordinates of vertices of the quadrilateral: first, the point A
, then B
, then C
and D
. All input data are integers not exceeding modulo 100.
Output data
A single number - the length of longest side. The result is output to two decimal places.
Examples
Input example #1
3 5 6 6 7 2 1 1
Output example #1
6.08