#include <iostream>
#include <sstream>
#include <math.h>
#include <stack>
#include <set>
#include <algorithm>
#include <string>
#include <queue>
#include <stack>
#include <map>
#include <cstdio>
#include <vector>
using namespace std;

#define INF (1 << 30)
#define INFLL (1LL << 60)

int main() {
	bool num[10] = {};
	int n,a,b,c,d;
	string str;
	cin >> n;
	for(int i = 0;i < n;i++){
		cin >> a >> b >> c >> d >> str;
		if(str == "YES"){
			for(int j = 0;j < 10;j++){
				if(j == a || j == b || j == c || j == d) continue;
				num[j] = 1;
			}
		}else{
			num[a] = 1;
			num[b] = 1;
			num[c] = 1;
			num[d] = 1;
		}
	}
	for(int i = 0;i < 10;i++){
		if(num[i] == 0) cout << i << endl;
	}
	return 0;
}