#include <iostream>
#include <vector>
#include <cmath>
#include <map>
#include <set>
#include <iomanip>
#include <queue>
#include <algorithm>
#include <numeric>
#include <deque>
#include <sstream>

using namespace std;

int main(){

    int T;
    cin >> T;
    string S="RRRDDLLL";
    for (int i=0; i<1e6; i++) S += "DDRRRRUUUULLLLDD";
    cout << S.substr(0, T) << endl;

    return 0;
}