#include<iostream>
#include<map>
using namespace std;
int main() {
	map<char, bool>m1; m1['T'] = true; m1['F'] = false;
	map<bool, char>m2; m2[true] = 'T'; m2[false] = 'F';
	char a, b; cin >> a >> b;
	cout << m2[!m1[b]] << m2[!m1[a]] << endl;
}