#include<bits/stdc++.h>
using namespace std;
#define ll long long int 
const int sz = 1e3 + 5, mod = 998244353;
int vis[sz][sz];
int32_t main() {
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	int n; cin >> n;
	for(int i = 1; i <= n; i++) {
		string d(n, '.');
		for(int j = 1; j <= n; j++) {
			if(!vis[i][j - 1] && !vis[i - 1][j - 1]) {
				vis[i][j - 1] = vis[i - 1][j - 1] = 1;
				d[j- 1] = 'L';
			} else if(!vis[i - 1][j - 1] && !vis[i - 1][j]) {
				vis[i - 1][j - 1] = vis[i - 1][j] = 1;
				d[j- 1] = 'U';
			} else if(!vis[i - 1][j] && !vis[i][j]) {
				vis[i - 1][j] = vis[i][j] = 1;
				d[j- 1] = 'R';
			} else if(!vis[i][j] && !vis[i][j - 1]) {
				vis[i][j] = vis[i][j - 1] = 1;
				d[j- 1] = 'D';
			} 
		}
		cout << d << "\n";
	}
	return 0; 
}