#include <stdio.h>
#include <atcoder/all>
#include <bits/stdc++.h>
using namespace std;
using namespace atcoder;
using mint = modint998244353;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf32 1000000001
#define Inf64 4000000000000000001



int main(){
	
	string ans = "RDUDRDUDRRDDUDULUDULUULL";
	int T;
	cin>>T;
	
	rep(i,T){
		cout<<ans[i%ans.size()];
	}
	cout<<endl;
	
	return 0;
}