#include <stdio.h>
#include <bits/stdc++.h>
#include <atcoder/all>
using namespace atcoder;
using mint = modint998244353;
using namespace std;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf 1000000001

int main(){
	
	int n;
	cin>>n;
	
	vector<int> a(n),b(n),c(n),d(n);
	vector<bool> r(n);
	
	rep(i,n){
		cin>>a[i]>>b[i]>>c[i]>>d[i];
		string s;
		cin>>s;
		if(s[0]=='Y')r[i] = true;
		else r[i] = false;
	}
	
	rep(i,10){
		bool F = true;
		rep(j,n){
			bool f = false;
			if(a[j]==i||b[j]==i||c[j]==i||d[j]==i)f = true;
			if(f!=r[j])F = false;
		}
		if(F){
			cout<<i<<endl;
		}
	}
	
	return 0;
}