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

/**
 * Reads in an arbitrarily long text file of floating point numbers
 * @author Jim O'Donnell
 */
public class GetFloats {

    public static void main(String[] argv) {
        float[] arr = getFloats();
        for(int i = 0; i < arr.length; i++)
            System.out.println(arr[i]);
    }

    public static float[] getFloats() {
        Vector v = new Vector();
        try {
            while(System.in.available() > 0) {
                try {
                    v.add(new Float(extractFloat()));
                }
                catch(NumberFormatException e) { }
            }
        }
        catch(IOException e) {
            System.out.println(e.toString());
        }
        float[] floats = new float[v.size()];
        for(int i = 0; i < v.size(); i++)
            floats[i] = ((Float) v.elementAt(i)).floatValue();
        return floats;
    }

    public static float extractFloat() throws NumberFormatException {
        String s = "";
        try {
            char next = (char) System.in.read();
            while(next != '\n' && System.in.available() > 0) {
                s += next;
                next = (char) System.in.read();
            }
        }
        catch(IOException e) {
            System.out.println(e.toString());
        }
        float retVal = Float.parseFloat(s);
        return retVal;
    }
}