import java.util.*;
import java.io.*;

class Point {
    private double x;
    private double y;

    public Point(double x, double y){
        setX(x);
        setY(y);
    }

    public void setX(double x){
        this.x = x;
    }

    public void setY(double y){
        this.y = y;
    }

    public double getX(){
        return this.x;
    }

    public double getY(){
        return this.y;
    }

    public double getDistance(){
        return Math.sqrt(x*x + y*y);
    }

    public String toString(){
        return "" + this.x + " " + this.y;
    }
}

public class Sandbox {

    public static void main(String[] args) {
        try {
            ArrayList<Point> pList = new ArrayList<>();

            Scanner sc = new Scanner(System.in);

            int size = 0;
            System.out.print("Enter size: ");
            size = Integer.parseInt(sc.nextLine());

            for(int i = 0; i < size; ++i){
                System.out.print("Enter x: ");
                double x = Double.parseDouble(sc.nextLine());
                System.out.print("Enter y: ");
                double y = Double.parseDouble(sc.nextLine());
                Point point = new Point(x, y);
                pList.add(point);
            }
            sc.close();

            for(int i = 0; i < pList.size(); ++i){
                System.out.println("Distance is " + pList.get(i).getDistance());
            }


        } catch(Exception e){
            e.printStackTrace();
            System.out.println("Unexpected error, sorry!");
        }
    }
}