#include <iostream>
#include <string>
//#include <algorithm>
using namespace std;

int main()
{
	int turn;
	int input[4];
	int answer[10] = {0};
	string yes_no;

	cin >> turn;
	for(int i = 0; i < turn; ++i)
	{
		for(int j = 0; j < 4; ++j)
		{
			cin >> input[j];
		}
		cin >> yes_no;

		for(int j = 0; j < 10; ++j)
		{
			if(yes_no == "YES")
			{
				answer[j] += (j == input[0] ||
							  j == input[1] ||
							  j == input[2] ||
							  j == input[3]);
			}
			else
			{
				answer[j] += (j != input[0] &&
							  j != input[1] &&
							  j != input[2] &&
							  j != input[3]);
			}
		}
	}

	for(int i = 0; i < 10; ++i)
	{
		if(answer[i] == turn)
		{
			cout << i << endl;
		}
	}

	return 0;
}