/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
import java.text.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		final DecimalFormat decimalFormatter = new DecimalFormat("#.####");
 
		System.out.println(decimalFormatter.format(-2));
		System.out.println(decimalFormatter.format(2.48f));
		System.out.println(decimalFormatter.format(-2.4578f));
		System.out.println(decimalFormatter.format(0));
 
	}
}

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