#include <iostream>
#include <algorithm>
#include <vector>
#include <set>
#include <map>
#include <queue>
#include <stack>
#include <cstdlib>
#include <cmath>
#include <cstring>
#include <iomanip>
using namespace std;

const int N = 1e5 + 5, inf = 1e9;
#define pb push_back
#define mp make_pair
#define ll long long
#define ff first
#define ss second
#define all(a) a.begin(),a.end()
#define sz(x) (int)x.size()
typedef vector<int> vi;
typedef pair<int,int> ii;
typedef vector<ii> vii;

void solve(){
    string s;
    cin >> s;
    int t = 0, d = 0;
    for(int i = 0; i < 5; i++){
        t += (s[i] == 'T');
        d += (s[i] == 'D');
    }
    if(t > d){
        cout << "T1\n";
    } else {
        cout << "DRX\n";
    }
}

int main(){
	ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
	int t = 1;
	// cin >> t;
	while(t--){
		solve();
	}
	return 0;
}