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

int main()
{
	string s;

	while (getline(cin,s)) {
		bool t = false;
		for (int i = 0; i < s.size(); i++) {
			if (s[i] == 'T')t = true;
		}

		if (t)cout << "T" << endl;
		else cout << endl;
	}

    return false;
}