import java.text.*;
import java.math.*;
import java.util.*;
import javax.swing.*;
import java.lang.Math;
public class MyPoint {
    public static void main(String[] args){

        DecimalFormat df = new DecimalFormat("0.00");

		Scanner s = new Scanner(System.in);

System.out.print("Enter the x and y coordinates for point one seperated by a space: ");
    int a = s.nextInt();
    int b = s.nextInt();

System.out.println("");

System.out.print("Enter the x and y coordinates for point two seperated by a space: ");
    int c = s.nextInt();
    int d = s.nextInt();

int[] point1 = new int[2];
int[] point2 = new int[2];
int[] point3 = new int[2];

point1[0] = a;
point1[1] = b;
point2[0] = c;
point2[1] = d;
point3[0] = 0;
point3[1] = 0;

System.out.println("");
System.out.println("Point 1 is: (" + point1[0] + ", " + point1[1] + ")");
System.out.println("");
System.out.println("Point 2 is: (" + point2[0] + ", " + point2[1] + ")");

}


public static int distance1 (int point1[], int point2[], int point3[]) {

double result;

result = Math.sqrt((((point[2]-point[1])*(point[2]-point[1])) - ((point[2]-point[1])*(point[2]-point[1]))));

return result;
             }
int point12distance = distance1(point1, point2, point3);
System.out.println(point12distance);

}