#include <bits/stdc++.h>
using namespace std;
const string key = "URDL";
string ans1 = "RLRD";
int ans2[] = {2, 0, 2, 1};
int main () {
    int N;
    cin >> N;
    if (N <= 4) {
        cout << ans1.substr(0, N) << endl;
        return 0;
    }
    cout << ans1;
    N -= 4;
    int a = N / 4, b = N % 4;
    for (int i = 0; i < a; i ++) {
        for (int j = 0; j < 4; j ++) {
            cout << key[(3 * i + ans2[j]) % 4];
        }
    }
    for (int j = 0; j < b; j ++) {
        cout << key[(a * 3 + ans2[j]) % 4];
    }
    cout << endl;
}