#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
using ll=long long;
using ld=long double;
ld pie=3.14159265359;
ll inf=10010010010010010;
ll mod=998244353;
int main(){
    ll n;
    cin >> n;
    string s="RRRDRDDDUUULULLL";
    string t;
    while (t.size()<n)
    {
        t+=s;
    }
    for (ll i = 0; i < n; i++)
    {
        cout << t[i];
    }
    
}