#include<iostream>
#include<string>
using namespace std;
int main() {
	int N, A[4];
	string R;
	int taro[11];
	for (int i = 0; i <= 10; i++) {
		taro[i] = 0;
	}
	cin >> N;
	for (int i = 0; i < N; i++) {
		for (int j = 0; j < 4; j++) cin >> A[j];
		cin >> R;
		if (R == "YES") {
			for (int j = 0; j < 4; j++) taro[A[j]]++;
			taro[10]++;
		}
		else {
			for (int j = 0; j < 4; j++) taro[A[j]]--;
		}
	}
	for (int i = 0; i < 10; i++) {
		if (taro[i] == taro[10]) cout << i << endl;
	}

	return 0;
}