using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

class yc2
{
    static void Main()
    {
        int N = int.Parse(Console.ReadLine());
        int temp;
        int[] ary = {0,1,2,3,4,5,6,7,8,9};
        int[] temps = new int[4];
        string[] str1;

        for (int i = 0; i < N; i++)
        {
            str1 = Console.ReadLine().Split();

            if (str1[4] == "NO")
            {
                for (int j = 0; j < 4; j++)
                {
                    temp = int.Parse(str1[j]);
                    ary[temp] = -1;
                }
            }
            else
            {
                for (int j = 0; j < 4; j++)
                {
                    temps[j] = int.Parse(str1[j]);
                }

                for (int j = 0; j < 10; j++)
                {
                    if (ary[j] != temps[0] && ary[j] != temps[1] &&
                        ary[j] != temps[2] && ary[j] != temps[3])
                    {
                        ary[j] = -1;
                    }
                }
            }
        }
        for (int i = 0; i < 10; i++)
        {
            if (ary[i] != -1) Console.WriteLine(ary[i]);
        }
    }
}