/* package whatever; // don't place package name! */

import java.util.*;
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
	{
		String[] arr = {"DEV","DC1","DC2","DC3"};
		
		String randElement = arr[(int) ((Math.random() * 3) +1)];
		System.out.println(randElement);
	}
}