#include "bits/stdc++.h"
using namespace std;


int main() {
	int N;
	cin >> N;
	vector<int> dp(10);
	int target = 0;
	for (int i = 0; i < N; i++)
	{
		vector<int> num(4);
		for (int i = 0; i < 4; i++)
		{
			cin >> num[i];
		}
		string R;
		cin >> R;
		if (R == "YES"){
			for (int i = 0; i < 4; i++)
			{
				dp[num[i]]--;
			}
			target--;
		}
		else{
			for (int i = 0; i < 4; i++)
			{
				dp[num[i]]++;
			}
		}
	}
	for (int i = 0; i < 10; i++)
	{
		if (dp[i] == target) cout << i << endl;
	}
}