#include<bits/stdc++.h>
using namespace std;
char s[5] = {'.', 'L', 'R', 'U', 'D'};
const int N = 1e3 + 10;
int res[N][N];
int main() {
	int n; cin >> n;
	if(n == 1) {
		puts("U"); return 0;
	}
	if(n & 1) {
		for(int i = 2; i <= n; i++)
			res[2][i] = 2;
		for(int i = 1; i <= n; i += 2)
			res[i][1] = res[i][2] = 1;
		for(int i = 3; i <= n; i += 2)
			res[1][i] = 3;
		for(int i = 3; i <= n; i++) {
			for(int j = 3; j <= n; j += 2)
				res[i][j] = 4;
		}
	}
	else {
		for(int i = 1; i <= n; i++) res[1][i] = 2;
		for(int i = 2; i <= n; i += 2) res[i][1] = 1;
		for(int i = 2; i <= n; i++)
			for(int j = 2; j <= n; j += 2) res[i][j] = 4;
	}
	for(int i = 1; i <= n; i++, puts(""))
		for(int j = 1; j <= n; j++) putchar(s[res[i][j]]);
	return 0;
}