#include <iostream>	//cin, cout
#include <vector>	//vector
#include <algorithm> //sort,min,max
#include <string>	//string
#include <ios>		//fixed
#include <iomanip>	//setprecision

using namespace std;

int main() {

	vector<int> Z(10);

	int N, A, B, C, D;
	string R;

	cin >> N;
	for (int i = 0; i < N; i++) {
		cin >> A >> B >> C >> D;
		cin >> R;

		if (R == "YES") {
			Z[A]++;
			Z[B]++;
			Z[C]++;
			Z[D]++;
		}
		else {
			Z[A]--;
			Z[B]--;
			Z[C]--;
			Z[D]--;
		}
	}

	int ans = distance(Z.begin(), max_element(Z.begin(), Z.end()));
	cout << ans << endl;

	return 0;

}