#define  _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <algorithm>
#include <utility>
#include <functional>
#include <cstring>
#include <queue>
#include <stack>
#include <math.h>
#include <iterator>
#include <vector>
#include <string>
#include <set>
#include <math.h>
#include <iostream> 
#include<map>
#include <iomanip>
#include <stdlib.h>
#include <list>
#include <typeinfo>
#include <list>
#include <set>
using namespace std;
#define MAX_MOD 1000000007
#define REP(i,n) for(long long i = 0;i < n;++i)
#define LONG_INF 100000000000000
int main(void) {
	int a, b, c, d, n, i, j, k[16] = { 0 };
	char s[4];
	scanf("%d", &n);
	for (i = 1;i <= n;i++) {
		scanf("%d%d%d%d%s", &a, &b, &c, &d, s);
		for (j = 0;j <= 9;j++) {
			if (j == a || j == b || j == c || j == d) {
				if (s[0] == 'N') { k[j] = 1; }
			}
			else {
				if (s[0] == 'Y') { k[j] = 1; }
			}
		}
	}
	for (i = 0;i <= 9;i++) {
		if (!(k[i])) { printf("%d\n", i); }
	}
	return 0;
}