import java.util.Arrays;
import java.util.Scanner;

public class no24 {
    public static void main(String[] args) {
        boolean[] b = new boolean[10];
        Arrays.fill(b, true);
        Scanner sc = new Scanner(System.in);
        final int N = sc.nextInt();
        for (int i = 0; i < N; i++) {
            int[] input = {sc.nextInt(), sc.nextInt(), sc.nextInt(), sc.nextInt()};
            if (sc.next().equals("NO")) {
                for (int j : input) {
                    b[j] = false;
                }
            } else {
                for (int j = 0; j < 10; j++) {
                    for (int k : input) {
                        if (j == k) {
                            break;
                        }
                    }
                    b[j] = false;
                }
            }
        }
        for (int i = 0; i < 10; i++) {
            if (b[i]) {
                System.out.println(i);
            }
        }
    }
}