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

int main()
{
	int number_of_turn;
	int numbers[6][4];
	string yes_no[6];
	int zero_to_nine[10] = {0};
	int answer;
	int biggest_number = -7;

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


	for(int i = 0; i < number_of_turn; ++i)
	{
		for(int j = 0; j < 10; ++j)
		{
			for(int k = 0; k < 4; ++k)
			{
				if(yes_no[i] == "YES")
				{
					zero_to_nine[j] += (j == numbers[i][k]);
				}
				else
				{
					zero_to_nine[j] -= (j == numbers[i][k]);
				}
			}
		}
	}


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

	return 0;
}