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

public class MathSqrt
{
    public static void main(String[] args) throws Exception
    {
        Scanner sc = new Scanner(System.in);
        double[] array = new double[4];

        for(int i = 0; i < array.length; i++)
        {
            array[i] = sc.nextDouble();
        }

        for(int i = array.length - 1; i >= 0 ; i--)
        {
            double b = Math.sqrt(array[i]);
            System.out.println(b);
        }

    }
}

Edited by author 18.02.2015 17:39

Edited by author 18.02.2015 17:39

Why length of your array is 4? It's acceptable to the first test, but there is not a certain amount of numbers in the task.