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

#define IOS ios_base::sync_with_stdio (0); cin.tie (0);

int n;

void solve () {
    cin >> n;

    if (n == 1) {
        cout << "L\n";
        return;
    }
    if (n == 2) {
        cout << "LU\nDR\n";
        return;
    }

    if (n & 1) {
        vector a (n, vector<char> (n, '.'));
        a[0][0] = 'U';
        for (int j = 1; j < n; j++) a[0][j] = 'R';
        for (int i = 1; i < n; i++) {
            for (int j = 0; j < n; j += 2) a[i][j] = 'D';
        }
        a[1][0] = a[1][1] = 'L';
        for (int i = 0; i < n; i++) {
            for (int j = 0; j < n; j++) cout << a[i][j];
            cout << "\n";
        }
    }
    else {
        vector a (n, vector<char> (n, '.'));
        a[0][0] = 'L';
        a[0][1] = 'U';
        for (int j = 2; j < n; j++) a[0][j] = 'R';

        for (int i = 1; i < n; i++)
            for (int j = 1; j < n; j += 2) a[i][j] = 'D';

        a[1][0] = a[1][1] = 'R';
        
        for (int i = 3; i < n; i += 2) a[i][0] = 'L';

        for (int i = 0; i < n; i++) {
            for (int j = 0; j < n; j++) cout << a[i][j];
            cout << "\n";
        }
    }
}

signed main () {
    IOS;
    solve ();
}