Using the definition
write a function
that returns the Euclidean distance between two points p and q. For example, the distance between the point (0, 0) and the point (30, 40) is 50.
Input
The input consists of several pairs of points (two non-negative integer numbers each).
Output
For each two points, print their Euclidean distance.
Input
0 0 30 40 30 40 0 0 10 20 30 40 30 40 10 20
Output
50.0 50.0 28.284271247461902 28.284271247461902