#include <iostream>
using namespace std;

int main() {
	bool possibility[10];
	for (int i = 0; i < 10; i++) possibility[i] = true;
	int n;
	cin >> n;
	for (int i = 0; i < n; i++) {
		int num[4];
		string r;
		for (int j = 0; j < 4; j++) cin >> num[j];
		cin >> r;
		if (r == "YES") {
			for (int j = 0; j < 10; j++) {
				bool exists = false;
				for (int k = 0; k < 4; k++) {
					if (j == num[k]) exists = true;
				}
				possibility[j] &= exists;
			}
		} else {
			for (int j = 0; j < 4; j++) possibility[num[j]] = false;
		}
	}
	for (int i = 0; i < 10; i++) {
		if (possibility[i]) cout << i << endl;
	}
	return 0;
}