#include<iostream>
#include<vector>
using namespace std;

const int di[] = {0,-1,0,1};
const int dj[] = {1,0,-1,0};
int main()
{
	int N;
	cin >> N;
	string cmd = "LURD";
	for(int i=0;i<2*N;++i)
	{
		if(i&1)cout << 'L' << endl;
		else cout << 'D' << endl;
		char c; 
		cin >> c;
		if(c!=0) return 0;
	}
}