#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <sstream>
#include <string>
#include <cstring>
#include <cstdio>
#include <cstdlib>
#include <functional>
#include <numeric>
#include <algorithm>

using namespace std;

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

    while (getline(cin, str)) {
        transform(str.begin(), str.end(), str.begin(), [](char c) { return isalpha(c) ? c : ' '; });

        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;
}