Hide

Problem H
Computer, compute!

You likely know the Euclidean distance formula – the formula to find the distance $d$ between two points, $(x_1, y_1)$ and $(x_2, y_2)$, in a plane.

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

You will take the two integer coordinates as input and compute the distance between them.

Hint: You can use the sqrt function in the math module.

Input

Input consists of four lines. The first line consists of one integer $x_1$, the $x$-coordinate of the first point. The second line consists of one integer $y_1$, the $y$-coordinate of the first point. The third line consists of one integer $x_2$, the $x$-coordinate of the second point. The fourth line consists of one integer $y_2$, the $y$-coordinate of the second point. It is guaranteed that $-10\, 000 \leq x_1, y_1, x_2, y_2 \leq 10\, 000$.

Output

Output one line with one floating point number $d$, the Euclidean distance between the two points. The output number should have an absolute or relative error of at most $10^{-9}$.

Sample Input 1 Sample Output 1
-5
-5
-11
-13
10.000000000000000
Sample Input 2 Sample Output 2
0
0
0
0
0.000000000000000
Sample Input 3 Sample Output 3
1
1
5
4
5.000000000000000
Sample Input 4 Sample Output 4
3
4
3
4
0.000000000000000
Sample Input 5 Sample Output 5
4
-3
-5
9
15.000000000000000
Sample Input 6 Sample Output 6
7
20
12
8
13.000000000000000

Please log in to submit a solution to this problem

Log in