#include<bits/stdc++.h>
using namespace std;

#define INF 1234567890
#define ll long long

int N;

int main()
{
	ios::sync_with_stdio(0); cin.tie(0);
	cin.exceptions(ios::badbit | ios::failbit);
	cin >> N;
	
	string s;
	s += "RDRD";

	s += "RDRD";
	s += "ULDU";
	s += "ULUL";
	s += "RDLR";

	string t;
	t += "RDRD";
	t += "ULDU";
	t += "ULUL";
	t += "RDLR";

	while((int)s.size() < N)
		s += t;

	cout << string(s.begin(), s.begin()+N) << "\n";
	return 0;
}