#include <bits/stdc++.h>
#define rep(i,n) for(int i = 0; i < (int)(n); i++)

using namespace std;
using LL = long long;
using P = pair<int,int>;
using vv = vector<vector<int>>;
const int INF = (int)1e9;
const LL LINF = (LL)1e18;

int main(){
	int H, W, p;
	cin >> H >> W >> p;
	rep(i,1001){
		string ans;
		rep(j,19) ans += 'R';
		rep(j,19) ans += 'D';
		cout << ans << endl;
		int res;
		cin >> res;
		cerr << res << endl;
		if(res == -1) break;
	}

	return 0;
}