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

using ll = long long;

int main()
{
	int T;
	cin >> T;
	string S = "DDRUDDDR";
	while(S.size() < 1000000) S += "RRUUUULLLLDDDDRR";
	for(int i = 0; i < T; i++) cout << S[i];
	cout << endl;
	return 0;
}