/* package whatever; // don't place package name! */
 
import java.util.*;
import java.util.stream.*;
import java.lang.*;
import java.io.*;
 
/* 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
	{
		System.out.println(Stream.of("0", "  ").filter(s -> s != null && !s.chars().allMatch(Character::isWhitespace)).collect(Collectors.joining(".")));
	}
}

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