Calculate Shortest Path

In this problem, you are given the coordinates of two points in a 2D plane, (x₁, y₁) and (x₂, y₂). Your task is to calculate the Euclidean distance between these two points, rounded to two decimal places.

The Euclidean distance is given by the formula:

\(d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}\)

You must read the input from standard input and output the result to standard output.

inputFormat

The input consists of a single line containing four space-separated floating-point numbers: x₁, y₁, x₂, and y₂.

outputFormat

Output the Euclidean distance between the two points, rounded to two decimal places.

1 2 4 6

5.00