#include<bits/stdc++.h>
using namespace std;
using i128=__int128_t;
#define inf 0x3f3f3f3f
#define quick std::ios::sync_with_stdio(false);std::cin.tie(nullptr);std::cout.tie(nullptr);
typedef long long ll;
typedef pair<ll,ll> PII;
typedef unsigned long long ull;

#define N 1000010
#define M 998244353
// 998244353 1000000007 1073741824
// 无序map unordered_map

int a,b,c;
string s;

void solve(){
    cin>>s;
    for(auto it:s){
        if(it=='D')a++;
        else if(it=='T')b++;
        else c++;
    }

    if(a>b)cout<<"DRX"<<endl;
    else cout<<"T1"<<endl;
}

int main(){ quick
    int t=1;
    // cin>>t;
    while(t--){
        solve();
    }

	
	system("pause");
    return 0;
}