using System;
using static System.Console;
using System.Linq;
using System.Collections.Generic;

class Program
{
    static int NN => int.Parse(ReadLine());
    static long[] NList => ReadLine().Split().Select(long.Parse).ToArray();
    static int[] NMi => ReadLine().Split().Select(c => int.Parse(c) - 1).ToArray();
    static int[][] NMap(int n) => Enumerable.Repeat(0, n).Select(_ => NMi).ToArray();
    public static void Main()
    {
        Solve();
    }
    static void Solve()
    {
        var t = NN;
        var begin = "DDDRUURU";
        var loop = "RRDDDDLLLLUUUURR";
        var ans = new System.Text.StringBuilder();
        ans.Append(begin.Substring(0, Math.Min(8, t)));
        t -= 8;
        while (t > 0)
        {
            ans.Append(loop.Substring(0, Math.Min(16, t)));
            t -= 16;
        }
        WriteLine(ans.ToString());
    }
}