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

public class NumberGuessing {

    public static void main(String[] args) {
        int[] numList = new int[]{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1};
        Scanner scanner = new Scanner(System.in);
        int n = scanner.nextInt();
        for (int i = 0; i < n; i++) {
            Integer guessNum1 = scanner.nextInt();
            Integer guessNum2 = scanner.nextInt();
            Integer guessNum3 = scanner.nextInt();
            Integer guessNum4 = scanner.nextInt();
            List<Integer> guessNumList = Arrays.asList(guessNum1, guessNum2, guessNum3, guessNum4);
            String answer = scanner.next();
            if (answer.equals("NO")){
                for (int guessNum : guessNumList) {
                    numList[guessNum] = 0;
                }
            }
            if (answer.equals("YES")) {
                for (int k = 0; k < 10; k++) {
                    if (guessNumList.contains(k)) {
                        if (numList[k] != 0) {
                            numList[k] = 1;
                        }
                    } else {
                        numList[k] = 0;
                    }
                }
            }
        }
        for (int i = 0; i < 10; i++) {
            if (numList[i] == 1 || numList[i] == -1) {
                System.out.println(i);
            }
        }
    }
}