import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.StreamTokenizer;
import java.math.BigInteger;
public class Main {
    public static void main(String[] args) throws IOException {
        //String filename="myFile.txt";
        StreamTokenizer sTokenizer = null;
        BigInteger [] big;int i=0;
        double[] dmas =new double[131072];
        int wordCount = 0, numberCount = 0;
            sTokenizer = new StreamTokenizer(new BufferedReader(new InputStreamReader(System.in)));
            while (sTokenizer.nextToken() != StreamTokenizer.TT_EOF) {
                if (sTokenizer.ttype == StreamTokenizer.TT_NUMBER){
            dmas[i]=Math.sqrt(sTokenizer.nval);i++;
                }
                       }
            for(int j=i;j>=0;j--){
             System.out.printf("%.4f\n",dmas[j]);
            }
        }
}