import java.util.*;
import java.lang.*;
import java.io.*;
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		String s = "XXXX_YYYY_YYYYYYY_YYYYYYZZZZ";
		List r = Arrays.asList(s.split("_"));
		r = r.subList(Math.max(r.size() - 3, 0), r.size());
		System.out.println(String.join("_", r));
	}
}