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

public class root
{
    public static void main(String[] args)
    {
        Scanner in = new Scanner(System.in);

        ArrayList<Long> list = new ArrayList<Long>();

        while (in.hasNextLine())
        {
                list.add(in.nextLong());
        }

        Collections.reverse(list);

        for (long x : list)
        {
            System.out.printf("%.4f", Math.sqrt(x));
            System.out.println();
        }
    }

}

Works on my computer with the given input.

Edited by author 31.01.2015 06:20