/* -*- coding: utf-8 -*-
 *
 * 2228.cc:  No.2228 Creeping Ghost - yukicoder
 */

#include<cstdio>
#include<algorithm>
 
using namespace std;

/* constant */

const int N = 16;
const char mvs[] = "DDRRRRUUDDLLLLUU";

/* typedef */

/* global variables */

/* subroutines */

/* main */

int main() {
  int t;
  scanf("%d", &t);

  for (int i = 0; i < t; i++) putchar(mvs[i % N]);
  putchar('\n');
  return 0;
}