#include <iostream>
#include <sstream>
#include <string>

using namespace std;

int main(){
	string str, s;
	int sum = 0;

	while (getline(cin, str)){
		for (int i = str.size() - 1; i >= 0; --i)
			if (!((str[i] <= 'z'  && str[i] >= 'a') || (str[i] <= 'Z' && str[i] >= 'A')))
				str[i] = ' ';

		istringstream is(str);

		while (is >> s){
			if (s == "tram") ++sum;
			else if (s == "trolleybus") --sum;
		}
	}
    if (sum < 0) cout << "Trolleybus driver" << endl; else
	if (sum > 0) cout << "Tram driver" << endl;
	else cout << "Bus driver" << endl;

	return 0;
}