import java.util.ArrayList;
import java.util.Scanner;

public class Test {

    public static void main(String[] args) {

        Scanner in = new Scanner(System.in);
        System.out.println("Enter the numbers: ");

        ArrayList<Double> numbers = new ArrayList<Double>();

double number = 0.00;
        while(in.hasNextDouble()) {
            number = in.nextDouble();
        }

        while (number >= 0) {
            numbers.add(number);
        }

        for (Double d : numbers)
            System.out.println(d.doubleValue());
    }

}