import java.util.*;
class Main{
  public static void main(String args[]){
    Scanner scan = new Scanner(System.in);
    int n=scan.nextInt();
    StringBuffer buf = new StringBuffer();
    buf.append("RRRDDLLLDD");
    for (int i = 0; i < 100000; i++){
    	buf.append("RRRRUUUULLLLDDDD");
    }
    String str = buf.toString();
    System.out.println(str.substring(0, n));
  }
}