#include <iostream>
#include <string>
using namespace std;

int main() {
	int N,*A,*B,*C,*D;
	string *R;
	int num[10]; //答えの可能性のフラグ

	cin >> N;

	A = new int[N];
	B = new int[N];
	C = new int[N];
	D = new int[N];
	R = new string[N];
	for(int i=0; i<N; i++) cin >> A[i] >> B[i] >> C[i] >> D[i] >> R[i];
	for(int i=0; i<10; i++) num[i] = 1;

//数字が答えと成りえるか判定
	for(int i=0; i<N; i++) {
		if(R[i] == "NO") {
			num[A[i]] = 0;
			num[B[i]] = 0;
			num[C[i]] = 0;
			num[D[i]] = 0;
		}
		if(R[i] == "YES") {
			for(int j=0; j<10; j++) {
				if(j!=A[i] && j!=B[i] && j!=C[i] && j!=D[i]) num[j] = 0;
			}
		}
	}

	for(int i=0; i<10; i++) {
		if(num[i] == 1) {
			cout << i << endl;
		}
	}

	delete[] A;
	delete[] B;
	delete[] C;
	delete[] D;
	delete[] R;

	return 0;
}