#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int (i) = 0 ; (i) < (int)(n) ; (i)++)
#define REP(i,a,b) for(int (i) = a ; (int)(i) <= (int)(b) ; (i)++)
#define all(n) (n).begin(),(n).end()
typedef vector<int> Vi;
typedef vector<Vi> VVi;
typedef pair<int,int> Pii;
typedef vector<Pii> VPii;

int main(){
	int N;
	cin >> N;
	int bit = (1<<10)-1;
	rep(i,N){
		int r = 0;
		rep(j,4){
			int t;
			cin >> t;
			r |= (1<<t);
		}
		string q;
		cin >> q;
		if( q == "NO" ){
			bit &= ~r;
		}else{
			bit &= r;
		}
	}
	rep(i,10) if(bit>>i&1) cout << i << endl;
}